https://wiki.opensourceecology.org/api.php?action=feedcontributions&feedformat=atom&user=Andrea 2026-04-18T08:02:27Z User contributions MediaWiki 1.39.13 https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143626 2016-08-29T07:53:06Z

<p>Andrea: /* Système de suivi (Moteurs, Programme, Capteurs) */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> In France, We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August 2016: Design, final Functional requirements<br /> September 2016: BOM + Models<br /> Octobre/Novembre 2016: Workshop<br /> December-March 2017: Testing <br /> March 2017 : on production<br /> <br /> <br /> <br /> [http://cloud.osefrance.org/public.php?service=files&amp;t=d738a3aa778cb112a6592d36a199c5d5 Gantt ] chart (need ganttproject)<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ==== Design requirements ====<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> * Structure forum [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> * Concentrator optic forum [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> * Engines, Program, Captors forum [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> * Absorber forum [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ==== General====<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Reduce risks <br /> | Pay attention to parasitic reflexions <br /> | * optical risks ; * risks related to high pressure and high temperature hydraulic circuit<br /> |-<br /> |Cost (material, production, manufacturing, assembling) <br /> | Minimum <br /> | Minimum: &lt;300€/m² <br /> | Savings possible with respect to demonstrator but not yet optimized<br /> |}<br /> <br /> === Concentrator optic===<br /> [[http://forum.osefrance.org/viewforum.php?f=10|lien forum]] <br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Optical efficiency <br /> | Reflectivity (at normal angle) 0.9 <br /> | 60-70% <br /> | To finetune: relevant/optimized geometry, cf cf [[http://forum.osefrance.org/viewtopic.php?f=9&amp;t=2920#p3353|discussion/forum]] ; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime<br /> |-<br /> | Robustness and lifetime <br /> | no requirement <br /> | 3 to 5 years <br /> | To be studied : * time? * warranty? * what efficiency loss? * renewal point, maintenance frequency. * economic balance? * also to be written in other sections : structure, optic. *to define: expensive elements, frame elements last longer: 20 years or more<br /> |-<br /> | Accesibility for cleaning and maintenance <br /> | no requirement <br /> | yes <br /> | *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted <br /> |-<br /> | Thermal efficiency of the receptor <br /> | secondary concentration on the receptor &gt; 1.5 <br /> | 70-80% efficiency as a goal<br /> |<br /> |-<br /> | Total concentration factor <br /> | between 15 and 30 <br /> | between 15 and 30 <br /> | With 20 mirrors, it reaches about 15<br /> |-<br /> | Secondary reflector (CPC) : design coordinated with absorber <br /> | 60% <br /> | yes<br /> | <br /> |}<br /> <br /> === Structure===<br /> [[http://forum.osefrance.org/viewforum.php?f=9|lien forum]] <br /> <br /> <br /> ==Frame of mirrors set and receptor==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Independant structure: mirror, receptor <br /> | yes <br /> | No <br /> | Fixed relative position, to be set in accordance with latitude<br /> |-<br /> |Resistance to ambiant environment <br /> | yes, punctually <br /> |yes, permanently <br /> | wind speed, hail, rain, snow, dust<br /> |-<br /> |Sufficient stiffness against vibrations and deformation <br /> | yes <br /> | yes <br /> | <br /> |-<br /> |Ground fixing <br /> | Adjustable feet <br /> | Fixed <br /> | Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...<br /> |-<br /> |Assembling easiness <br /> | yes <br /> | yes <br /> | kit possible<br /> |-<br /> |Transport easiness <br /> | yes <br /> | no<br /> | <br /> |-<br /> |Welding <br /> | the least possible <br /> | Ok <br /> | No requirement initially, compromise between : building complexity and assembling easiness<br /> | <br /> |-<br /> |Limitation of accident risks <br /> | yes <br /> | yes <br /> | at all stages : manufacturing, assembling <br /> |}<br /> <br /> == Structure of mirrors facets==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Fresnel mirror: area<br /> | 2x2 m$^2$ with 20 facets 10 cm wide|defined by the power need (5KW )<br /> |<br /> |-<br /> |Mirror deformation limitation <br /> | deflection lower than 5 mm / 0.1° facet orientation, respectively 1cm on the receptor <br /> | (a priori) depends on receptor height, valid for 1.5m height<br /> |-<br /> |Sun tracking (east west) <br /> | &gt;120° respectively 8h tracking <br /> | 12h tracking <br /> | respective rotation of 90° in 12h<br /> |-<br /> |Bad weather protection <br /> | yes <br /> | yes <br /> | for instance: 180° range (mirrors down)<br /> |-<br /> |Optical alignment possible through a tuning needless of special tools <br /> | yes <br /> | yes <br /> | Better: procedure to be updated for calibration<br /> |-<br /> | Easy switching of mirror facets <br /> | yes <br /> | yes <br /> | more generally: easy maintenance <br /> |}<br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Real time accurate tracking of the sun motion <br /> | yes <br /> | yes <br /> | Plan a failsoft mode in case of a failure of the tracking system<br /> |-<br /> |Motorisation of mirrors<br /> | yes <br /> | yes <br /> | <br /> |-<br /> |Electricity consumption <br /> | - <br /> | Minimum achievable <br /> | Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)<br /> |-<br /> |Number of engines <br /> | Minimum <br /> | One per module or one for all the system <br /> | To be validated regarding the other technical choices (structure)<br /> |-<br /> |Sun tracking to get the right angle <br /> | yes <br /> | yes, with necessary accuracy <br /> | Goal: send all the beams of each mirror on the width of the recptor (CPC width)<br /> |-<br /> |Sensors (weather condition detection) <br /> | - <br /> | yes <br /> | * ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))<br /> |-<br /> |Fluid temperature and pressure measurements <br /> | yes <br /> | drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use<br /> |-<br /> |System automatic shutdown <br /> | Optional <br /> | Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)<br /> |-<br /> |Simple controlling panel <br /> | yes <br /> | Programming expert mode when needed, but simple to use<br /> | ideas: remote access ? consultation des informations de fonctionnement (et historique ?)To be scheduled<br /> |}<br /> <br /> ===7) Receiver unit (absorber)===<br /> [[http://forum.osefrance.org/viewforum.php?f=11|lien forum]] <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Specific design for the working fluid, natural or forced circulation <br /> | 100% <br /> | yes <br /> | <br /> |-<br /> |Selective material: High absorption qualities through all the solar spectrum : 100% , Absorbance 90%, infrared emissivity 15% : material intrinsically absorbant (or absorptive coating) <br /> | = high absorbance through all the solar spectrum and low infrared emissivity<br /> |<br /> |-<br /> |High thermal exchange between absorber and fluid <br /> | 60% <br /> | yes <br /> | material and conduction-convection in the fluid<br /> |-<br /> |The system should be thermally insulated (with respect to ambiant air, infrared radiation) <br /> | 60% <br /> | yes <br /> | see requirement for the overall thermal efficiency (insulation material above and glass below)<br /> |-<br /> |Good resistance to temperature variation (material expansion, tightness) <br /> | 60% <br /> | yes <br /> | In particular, risks related to high temperatures and pressure of fluid<br /> |}<br /> <br /> Ideas: <br /> * modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) <br /> * In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===Usage===<br /> <br /> Requirements to be better defined with user<br /> <br /> Functioning<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Position: avoid building shadow and other masks <br /> | - <br /> | ?<br /> |-<br /> |Running range <br /> | - <br /> | ? <br /> | *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude<br /> |-<br /> |Temperature level <br /> | - <br /> | ? <br /> | Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C<br /> |}<br /> <br /> ==Hydraulic circuit==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Pressure losses <br /> | - <br /> | Minimum <br /> | Limit pressure losses, above all for light fluids : air, steam<br /> |-<br /> |Open/closed circuit <br /> | - <br /> | ?<br /> | <br /> |-<br /> |Mineral scale risks <br /> | - <br /> | ? <br /> | Gives good reason to run in a closed circuit...<br /> |-<br /> |Fluid <br /> | - <br /> | ?<br /> | <br /> |}<br /> <br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143625 2016-08-29T07:52:38Z

<p>Andrea: /* Design requirements */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> In France, We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August 2016: Design, final Functional requirements<br /> September 2016: BOM + Models<br /> Octobre/Novembre 2016: Workshop<br /> December-March 2017: Testing <br /> March 2017 : on production<br /> <br /> <br /> <br /> [http://cloud.osefrance.org/public.php?service=files&amp;t=d738a3aa778cb112a6592d36a199c5d5 Gantt ] chart (need ganttproject)<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ==== Design requirements ====<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> * Structure forum [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> * Concentrator optic forum [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> * Engines, Program, Captors forum [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> * Absorber forum [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ==== General====<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Reduce risks <br /> | Pay attention to parasitic reflexions <br /> | * optical risks ; * risks related to high pressure and high temperature hydraulic circuit<br /> |-<br /> |Cost (material, production, manufacturing, assembling) <br /> | Minimum <br /> | Minimum: &lt;300€/m² <br /> | Savings possible with respect to demonstrator but not yet optimized<br /> |}<br /> <br /> === Concentrator optic===<br /> [[http://forum.osefrance.org/viewforum.php?f=10|lien forum]] <br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Optical efficiency <br /> | Reflectivity (at normal angle) 0.9 <br /> | 60-70% <br /> | To finetune: relevant/optimized geometry, cf cf [[http://forum.osefrance.org/viewtopic.php?f=9&amp;t=2920#p3353|discussion/forum]] ; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime<br /> |-<br /> | Robustness and lifetime <br /> | no requirement <br /> | 3 to 5 years <br /> | To be studied : * time? * warranty? * what efficiency loss? * renewal point, maintenance frequency. * economic balance? * also to be written in other sections : structure, optic. *to define: expensive elements, frame elements last longer: 20 years or more<br /> |-<br /> | Accesibility for cleaning and maintenance <br /> | no requirement <br /> | yes <br /> | *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted <br /> |-<br /> | Thermal efficiency of the receptor <br /> | secondary concentration on the receptor &gt; 1.5 <br /> | 70-80% efficiency as a goal<br /> |<br /> |-<br /> | Total concentration factor <br /> | between 15 and 30 <br /> | between 15 and 30 <br /> | With 20 mirrors, it reaches about 15<br /> |-<br /> | Secondary reflector (CPC) : design coordinated with absorber <br /> | 60% <br /> | yes<br /> | <br /> |}<br /> <br /> === Structure===<br /> [[http://forum.osefrance.org/viewforum.php?f=9|lien forum]] <br /> <br /> <br /> ==Frame of mirrors set and receptor==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Independant structure: mirror, receptor <br /> | yes <br /> | No <br /> | Fixed relative position, to be set in accordance with latitude<br /> |-<br /> |Resistance to ambiant environment <br /> | yes, punctually <br /> |yes, permanently <br /> | wind speed, hail, rain, snow, dust<br /> |-<br /> |Sufficient stiffness against vibrations and deformation <br /> | yes <br /> | yes <br /> | <br /> |-<br /> |Ground fixing <br /> | Adjustable feet <br /> | Fixed <br /> | Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...<br /> |-<br /> |Assembling easiness <br /> | yes <br /> | yes <br /> | kit possible<br /> |-<br /> |Transport easiness <br /> | yes <br /> | no<br /> | <br /> |-<br /> |Welding <br /> | the least possible <br /> | Ok <br /> | No requirement initially, compromise between : building complexity and assembling easiness<br /> | <br /> |-<br /> |Limitation of accident risks <br /> | yes <br /> | yes <br /> | at all stages : manufacturing, assembling <br /> |}<br /> <br /> == Structure of mirrors facets==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Fresnel mirror: area<br /> | 2x2 m$^2$ with 20 facets 10 cm wide|defined by the power need (5KW )<br /> |<br /> |-<br /> |Mirror deformation limitation <br /> | deflection lower than 5 mm / 0.1° facet orientation, respectively 1cm on the receptor <br /> | (a priori) depends on receptor height, valid for 1.5m height<br /> |-<br /> |Sun tracking (east west) <br /> | &gt;120° respectively 8h tracking <br /> | 12h tracking <br /> | respective rotation of 90° in 12h<br /> |-<br /> |Bad weather protection <br /> | yes <br /> | yes <br /> | for instance: 180° range (mirrors down)<br /> |-<br /> |Optical alignment possible through a tuning needless of special tools <br /> | yes <br /> | yes <br /> | Better: procedure to be updated for calibration<br /> |-<br /> | Easy switching of mirror facets <br /> | yes <br /> | yes <br /> | more generally: easy maintenance <br /> |}<br /> <br /> ==== Système de suivi (Moteurs, Programme, Capteurs) ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Real time accurate tracking of the sun motion <br /> | yes <br /> | yes <br /> | Plan a failsoft mode in case of a failure of the tracking system<br /> |-<br /> |Motorisation of mirrors<br /> | yes <br /> | yes <br /> | <br /> |-<br /> |Electricity consumption <br /> | - <br /> | Minimum achievable <br /> | Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)<br /> |-<br /> |Number of engines <br /> | Minimum <br /> | One per module or one for all the system <br /> | To be validated regarding the other technical choices (structure)<br /> |-<br /> |Sun tracking to get the right angle <br /> | yes <br /> | yes, with necessary accuracy <br /> | Goal: send all the beams of each mirror on the width of the recptor (CPC width)<br /> |-<br /> |Sensors (weather condition detection) <br /> | - <br /> | yes <br /> | * ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))<br /> |-<br /> |Fluid temperature and pressure measurements <br /> | yes <br /> | drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use<br /> |-<br /> |System automatic shutdown <br /> | Optional <br /> | Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)<br /> |-<br /> |Simple controlling panel <br /> | yes <br /> | Programming expert mode when needed, but simple to use<br /> | ideas: remote access ? consultation des informations de fonctionnement (et historique ?)To be scheduled<br /> |}<br /> <br /> ===7) Receiver unit (absorber)===<br /> [[http://forum.osefrance.org/viewforum.php?f=11|lien forum]] <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Specific design for the working fluid, natural or forced circulation <br /> | 100% <br /> | yes <br /> | <br /> |-<br /> |Selective material: High absorption qualities through all the solar spectrum : 100% , Absorbance 90%, infrared emissivity 15% : material intrinsically absorbant (or absorptive coating) <br /> | = high absorbance through all the solar spectrum and low infrared emissivity<br /> |<br /> |-<br /> |High thermal exchange between absorber and fluid <br /> | 60% <br /> | yes <br /> | material and conduction-convection in the fluid<br /> |-<br /> |The system should be thermally insulated (with respect to ambiant air, infrared radiation) <br /> | 60% <br /> | yes <br /> | see requirement for the overall thermal efficiency (insulation material above and glass below)<br /> |-<br /> |Good resistance to temperature variation (material expansion, tightness) <br /> | 60% <br /> | yes <br /> | In particular, risks related to high temperatures and pressure of fluid<br /> |}<br /> <br /> Ideas: <br /> * modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) <br /> * In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===Usage===<br /> <br /> Requirements to be better defined with user<br /> <br /> Functioning<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Position: avoid building shadow and other masks <br /> | - <br /> | ?<br /> |-<br /> |Running range <br /> | - <br /> | ? <br /> | *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude<br /> |-<br /> |Temperature level <br /> | - <br /> | ? <br /> | Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C<br /> |}<br /> <br /> ==Hydraulic circuit==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Pressure losses <br /> | - <br /> | Minimum <br /> | Limit pressure losses, above all for light fluids : air, steam<br /> |-<br /> |Open/closed circuit <br /> | - <br /> | ?<br /> | <br /> |-<br /> |Mineral scale risks <br /> | - <br /> | ? <br /> | Gives good reason to run in a closed circuit...<br /> |-<br /> |Fluid <br /> | - <br /> | ?<br /> | <br /> |}<br /> <br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143600 2016-08-28T21:49:45Z

<p>Andrea: /* Planning */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> In France, We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August 2016: Design, final Functional requirements<br /> September 2016: BOM + Models<br /> Octobre/Novembre 2016: Workshop<br /> December-March 2017: Testing <br /> March 2017 : on production<br /> <br /> <br /> <br /> [http://cloud.osefrance.org/public.php?service=files&amp;t=d738a3aa778cb112a6592d36a199c5d5 Gantt ] chart (need ganttproject)<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ==== Design requirements ====<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> L'historique des discussions entre contributeurs est accessible par les liens respectifs vers le forum :<br /> * Structure forum [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> * Concentrator optic forum [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> * Engines, Program, Captors forum [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> * Absorber forum [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ==== General====<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Reduce risks <br /> | Pay attention to parasitic reflexions <br /> | * optical risks ; * risks related to high pressure and high temperature hydraulic circuit<br /> |-<br /> |Cost (material, production, manufacturing, assembling) <br /> | Minimum <br /> | Minimum: &lt;300€/m² <br /> | Savings possible with respect to demonstrator but not yet optimized<br /> |}<br /> <br /> === Concentrator optic===<br /> [[http://forum.osefrance.org/viewforum.php?f=10|lien forum]] <br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Optical efficiency <br /> | Reflectivity (at normal angle) 0.9 <br /> | 60-70% <br /> | To finetune: relevant/optimized geometry, cf cf [[http://forum.osefrance.org/viewtopic.php?f=9&amp;t=2920#p3353|discussion/forum]] ; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime<br /> |-<br /> | Robustness and lifetime <br /> | no requirement <br /> | 3 to 5 years <br /> | To be studied : * time? * warranty? * what efficiency loss? * renewal point, maintenance frequency. * economic balance? * also to be written in other sections : structure, optic. *to define: expensive elements, frame elements last longer: 20 years or more<br /> |-<br /> | Accesibility for cleaning and maintenance <br /> | no requirement <br /> | yes <br /> | *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted <br /> |-<br /> | Thermal efficiency of the receptor <br /> | secondary concentration on the receptor &gt; 1.5 <br /> | 70-80% efficiency as a goal<br /> |<br /> |-<br /> | Total concentration factor <br /> | between 15 and 30 <br /> | between 15 and 30 <br /> | With 20 mirrors, it reaches about 15<br /> |-<br /> | Secondary reflector (CPC) : design coordinated with absorber <br /> | 60% <br /> | yes<br /> | <br /> |}<br /> <br /> === Structure===<br /> [[http://forum.osefrance.org/viewforum.php?f=9|lien forum]] <br /> <br /> <br /> ==Frame of mirrors set and receptor==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Independant structure: mirror, receptor <br /> | yes <br /> | No <br /> | Fixed relative position, to be set in accordance with latitude<br /> |-<br /> |Resistance to ambiant environment <br /> | yes, punctually <br /> |yes, permanently <br /> | wind speed, hail, rain, snow, dust<br /> |-<br /> |Sufficient stiffness against vibrations and deformation <br /> | yes <br /> | yes <br /> | <br /> |-<br /> |Ground fixing <br /> | Adjustable feet <br /> | Fixed <br /> | Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...<br /> |-<br /> |Assembling easiness <br /> | yes <br /> | yes <br /> | kit possible<br /> |-<br /> |Transport easiness <br /> | yes <br /> | no<br /> | <br /> |-<br /> |Welding <br /> | the least possible <br /> | Ok <br /> | No requirement initially, compromise between : building complexity and assembling easiness<br /> | <br /> |-<br /> |Limitation of accident risks <br /> | yes <br /> | yes <br /> | at all stages : manufacturing, assembling <br /> |}<br /> <br /> == Structure of mirrors facets==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Fresnel mirror: area<br /> | 2x2 m$^2$ with 20 facets 10 cm wide|defined by the power need (5KW )<br /> |<br /> |-<br /> |Mirror deformation limitation <br /> | deflection lower than 5 mm / 0.1° facet orientation, respectively 1cm on the receptor <br /> | (a priori) depends on receptor height, valid for 1.5m height<br /> |-<br /> |Sun tracking (east west) <br /> | &gt;120° respectively 8h tracking <br /> | 12h tracking <br /> | respective rotation of 90° in 12h<br /> |-<br /> |Bad weather protection <br /> | yes <br /> | yes <br /> | for instance: 180° range (mirrors down)<br /> |-<br /> |Optical alignment possible through a tuning needless of special tools <br /> | yes <br /> | yes <br /> | Better: procedure to be updated for calibration<br /> |-<br /> | Easy switching of mirror facets <br /> | yes <br /> | yes <br /> | more generally: easy maintenance <br /> |}<br /> <br /> ==== Système de suivi (Moteurs, Programme, Capteurs) ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Real time accurate tracking of the sun motion <br /> | yes <br /> | yes <br /> | Plan a failsoft mode in case of a failure of the tracking system<br /> |-<br /> |Motorisation of mirrors<br /> | yes <br /> | yes <br /> | <br /> |-<br /> |Electricity consumption <br /> | - <br /> | Minimum achievable <br /> | Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)<br /> |-<br /> |Number of engines <br /> | Minimum <br /> | One per module or one for all the system <br /> | To be validated regarding the other technical choices (structure)<br /> |-<br /> |Sun tracking to get the right angle <br /> | yes <br /> | yes, with necessary accuracy <br /> | Goal: send all the beams of each mirror on the width of the recptor (CPC width)<br /> |-<br /> |Sensors (weather condition detection) <br /> | - <br /> | yes <br /> | * ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))<br /> |-<br /> |Fluid temperature and pressure measurements <br /> | yes <br /> | drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use<br /> |-<br /> |System automatic shutdown <br /> | Optional <br /> | Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)<br /> |-<br /> |Simple controlling panel <br /> | yes <br /> | Programming expert mode when needed, but simple to use<br /> | ideas: remote access ? consultation des informations de fonctionnement (et historique ?)To be scheduled<br /> |}<br /> <br /> ===7) Receiver unit (absorber)===<br /> [[http://forum.osefrance.org/viewforum.php?f=11|lien forum]] <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Specific design for the working fluid, natural or forced circulation <br /> | 100% <br /> | yes <br /> | <br /> |-<br /> |Selective material: High absorption qualities through all the solar spectrum : 100% , Absorbance 90%, infrared emissivity 15% : material intrinsically absorbant (or absorptive coating) <br /> | = high absorbance through all the solar spectrum and low infrared emissivity<br /> |<br /> |-<br /> |High thermal exchange between absorber and fluid <br /> | 60% <br /> | yes <br /> | material and conduction-convection in the fluid<br /> |-<br /> |The system should be thermally insulated (with respect to ambiant air, infrared radiation) <br /> | 60% <br /> | yes <br /> | see requirement for the overall thermal efficiency (insulation material above and glass below)<br /> |-<br /> |Good resistance to temperature variation (material expansion, tightness) <br /> | 60% <br /> | yes <br /> | In particular, risks related to high temperatures and pressure of fluid<br /> |}<br /> <br /> Ideas: <br /> * modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) <br /> * In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===Usage===<br /> <br /> Requirements to be better defined with user<br /> <br /> Functioning<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Position: avoid building shadow and other masks <br /> | - <br /> | ?<br /> |-<br /> |Running range <br /> | - <br /> | ? <br /> | *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude<br /> |-<br /> |Temperature level <br /> | - <br /> | ? <br /> | Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C<br /> |}<br /> <br /> ==Hydraulic circuit==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Pressure losses <br /> | - <br /> | Minimum <br /> | Limit pressure losses, above all for light fluids : air, steam<br /> |-<br /> |Open/closed circuit <br /> | - <br /> | ?<br /> | <br /> |-<br /> |Mineral scale risks <br /> | - <br /> | ? <br /> | Gives good reason to run in a closed circuit...<br /> |-<br /> |Fluid <br /> | - <br /> | ?<br /> | <br /> |}<br /> <br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143599 2016-08-28T21:49:06Z

<p>Andrea: /* Planning */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> In France, We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August 2016: Design, final Functional requirements<br /> September 2016: BOM + Models<br /> Octobre/Novembre 2016: Workshop<br /> December-March 2017: Testing <br /> March 2017 : on production<br /> <br /> <br /> <br /> Gantt chart (need ganttproject)<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ==== Design requirements ====<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> L'historique des discussions entre contributeurs est accessible par les liens respectifs vers le forum :<br /> * Structure forum [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> * Concentrator optic forum [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> * Engines, Program, Captors forum [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> * Absorber forum [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ==== General====<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Reduce risks <br /> | Pay attention to parasitic reflexions <br /> | * optical risks ; * risks related to high pressure and high temperature hydraulic circuit<br /> |-<br /> |Cost (material, production, manufacturing, assembling) <br /> | Minimum <br /> | Minimum: &lt;300€/m² <br /> | Savings possible with respect to demonstrator but not yet optimized<br /> |}<br /> <br /> === Concentrator optic===<br /> [[http://forum.osefrance.org/viewforum.php?f=10|lien forum]] <br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Optical efficiency <br /> | Reflectivity (at normal angle) 0.9 <br /> | 60-70% <br /> | To finetune: relevant/optimized geometry, cf cf [[http://forum.osefrance.org/viewtopic.php?f=9&amp;t=2920#p3353|discussion/forum]] ; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime<br /> |-<br /> | Robustness and lifetime <br /> | no requirement <br /> | 3 to 5 years <br /> | To be studied : * time? * warranty? * what efficiency loss? * renewal point, maintenance frequency. * economic balance? * also to be written in other sections : structure, optic. *to define: expensive elements, frame elements last longer: 20 years or more<br /> |-<br /> | Accesibility for cleaning and maintenance <br /> | no requirement <br /> | yes <br /> | *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted <br /> |-<br /> | Thermal efficiency of the receptor <br /> | secondary concentration on the receptor &gt; 1.5 <br /> | 70-80% efficiency as a goal<br /> |<br /> |-<br /> | Total concentration factor <br /> | between 15 and 30 <br /> | between 15 and 30 <br /> | With 20 mirrors, it reaches about 15<br /> |-<br /> | Secondary reflector (CPC) : design coordinated with absorber <br /> | 60% <br /> | yes<br /> | <br /> |}<br /> <br /> === Structure===<br /> [[http://forum.osefrance.org/viewforum.php?f=9|lien forum]] <br /> <br /> <br /> ==Frame of mirrors set and receptor==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Independant structure: mirror, receptor <br /> | yes <br /> | No <br /> | Fixed relative position, to be set in accordance with latitude<br /> |-<br /> |Resistance to ambiant environment <br /> | yes, punctually <br /> |yes, permanently <br /> | wind speed, hail, rain, snow, dust<br /> |-<br /> |Sufficient stiffness against vibrations and deformation <br /> | yes <br /> | yes <br /> | <br /> |-<br /> |Ground fixing <br /> | Adjustable feet <br /> | Fixed <br /> | Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...<br /> |-<br /> |Assembling easiness <br /> | yes <br /> | yes <br /> | kit possible<br /> |-<br /> |Transport easiness <br /> | yes <br /> | no<br /> | <br /> |-<br /> |Welding <br /> | the least possible <br /> | Ok <br /> | No requirement initially, compromise between : building complexity and assembling easiness<br /> | <br /> |-<br /> |Limitation of accident risks <br /> | yes <br /> | yes <br /> | at all stages : manufacturing, assembling <br /> |}<br /> <br /> == Structure of mirrors facets==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Fresnel mirror: area<br /> | 2x2 m$^2$ with 20 facets 10 cm wide|defined by the power need (5KW )<br /> |<br /> |-<br /> |Mirror deformation limitation <br /> | deflection lower than 5 mm / 0.1° facet orientation, respectively 1cm on the receptor <br /> | (a priori) depends on receptor height, valid for 1.5m height<br /> |-<br /> |Sun tracking (east west) <br /> | &gt;120° respectively 8h tracking <br /> | 12h tracking <br /> | respective rotation of 90° in 12h<br /> |-<br /> |Bad weather protection <br /> | yes <br /> | yes <br /> | for instance: 180° range (mirrors down)<br /> |-<br /> |Optical alignment possible through a tuning needless of special tools <br /> | yes <br /> | yes <br /> | Better: procedure to be updated for calibration<br /> |-<br /> | Easy switching of mirror facets <br /> | yes <br /> | yes <br /> | more generally: easy maintenance <br /> |}<br /> <br /> ==== Système de suivi (Moteurs, Programme, Capteurs) ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Real time accurate tracking of the sun motion <br /> | yes <br /> | yes <br /> | Plan a failsoft mode in case of a failure of the tracking system<br /> |-<br /> |Motorisation of mirrors<br /> | yes <br /> | yes <br /> | <br /> |-<br /> |Electricity consumption <br /> | - <br /> | Minimum achievable <br /> | Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)<br /> |-<br /> |Number of engines <br /> | Minimum <br /> | One per module or one for all the system <br /> | To be validated regarding the other technical choices (structure)<br /> |-<br /> |Sun tracking to get the right angle <br /> | yes <br /> | yes, with necessary accuracy <br /> | Goal: send all the beams of each mirror on the width of the recptor (CPC width)<br /> |-<br /> |Sensors (weather condition detection) <br /> | - <br /> | yes <br /> | * ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))<br /> |-<br /> |Fluid temperature and pressure measurements <br /> | yes <br /> | drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use<br /> |-<br /> |System automatic shutdown <br /> | Optional <br /> | Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)<br /> |-<br /> |Simple controlling panel <br /> | yes <br /> | Programming expert mode when needed, but simple to use<br /> | ideas: remote access ? consultation des informations de fonctionnement (et historique ?)To be scheduled<br /> |}<br /> <br /> ===7) Receiver unit (absorber)===<br /> [[http://forum.osefrance.org/viewforum.php?f=11|lien forum]] <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Specific design for the working fluid, natural or forced circulation <br /> | 100% <br /> | yes <br /> | <br /> |-<br /> |Selective material: High absorption qualities through all the solar spectrum : 100% , Absorbance 90%, infrared emissivity 15% : material intrinsically absorbant (or absorptive coating) <br /> | = high absorbance through all the solar spectrum and low infrared emissivity<br /> |<br /> |-<br /> |High thermal exchange between absorber and fluid <br /> | 60% <br /> | yes <br /> | material and conduction-convection in the fluid<br /> |-<br /> |The system should be thermally insulated (with respect to ambiant air, infrared radiation) <br /> | 60% <br /> | yes <br /> | see requirement for the overall thermal efficiency (insulation material above and glass below)<br /> |-<br /> |Good resistance to temperature variation (material expansion, tightness) <br /> | 60% <br /> | yes <br /> | In particular, risks related to high temperatures and pressure of fluid<br /> |}<br /> <br /> Ideas: <br /> * modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) <br /> * In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===Usage===<br /> <br /> Requirements to be better defined with user<br /> <br /> Functioning<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Position: avoid building shadow and other masks <br /> | - <br /> | ?<br /> |-<br /> |Running range <br /> | - <br /> | ? <br /> | *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude<br /> |-<br /> |Temperature level <br /> | - <br /> | ? <br /> | Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C<br /> |}<br /> <br /> ==Hydraulic circuit==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Pressure losses <br /> | - <br /> | Minimum <br /> | Limit pressure losses, above all for light fluids : air, steam<br /> |-<br /> |Open/closed circuit <br /> | - <br /> | ?<br /> | <br /> |-<br /> |Mineral scale risks <br /> | - <br /> | ? <br /> | Gives good reason to run in a closed circuit...<br /> |-<br /> |Fluid <br /> | - <br /> | ?<br /> | <br /> |}<br /> <br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143598 2016-08-28T21:44:40Z

<p>Andrea: /* Hydraulic circuit */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> In France, We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August 2016: Design, final Functional requirements<br /> September 2016: BOM + Models<br /> Octobre/Novembre 2016: Workshop<br /> December-March 2017: Testing <br /> March 2017 : on production<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ==== Design requirements ====<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> L'historique des discussions entre contributeurs est accessible par les liens respectifs vers le forum :<br /> * Structure forum [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> * Concentrator optic forum [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> * Engines, Program, Captors forum [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> * Absorber forum [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ==== General====<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Reduce risks <br /> | Pay attention to parasitic reflexions <br /> | * optical risks ; * risks related to high pressure and high temperature hydraulic circuit<br /> |-<br /> |Cost (material, production, manufacturing, assembling) <br /> | Minimum <br /> | Minimum: &lt;300€/m² <br /> | Savings possible with respect to demonstrator but not yet optimized<br /> |}<br /> <br /> === Concentrator optic===<br /> [[http://forum.osefrance.org/viewforum.php?f=10|lien forum]] <br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Optical efficiency <br /> | Reflectivity (at normal angle) 0.9 <br /> | 60-70% <br /> | To finetune: relevant/optimized geometry, cf cf [[http://forum.osefrance.org/viewtopic.php?f=9&amp;t=2920#p3353|discussion/forum]] ; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime<br /> |-<br /> | Robustness and lifetime <br /> | no requirement <br /> | 3 to 5 years <br /> | To be studied : * time? * warranty? * what efficiency loss? * renewal point, maintenance frequency. * economic balance? * also to be written in other sections : structure, optic. *to define: expensive elements, frame elements last longer: 20 years or more<br /> |-<br /> | Accesibility for cleaning and maintenance <br /> | no requirement <br /> | yes <br /> | *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted <br /> |-<br /> | Thermal efficiency of the receptor <br /> | secondary concentration on the receptor &gt; 1.5 <br /> | 70-80% efficiency as a goal<br /> |<br /> |-<br /> | Total concentration factor <br /> | between 15 and 30 <br /> | between 15 and 30 <br /> | With 20 mirrors, it reaches about 15<br /> |-<br /> | Secondary reflector (CPC) : design coordinated with absorber <br /> | 60% <br /> | yes<br /> | <br /> |}<br /> <br /> === Structure===<br /> [[http://forum.osefrance.org/viewforum.php?f=9|lien forum]] <br /> <br /> <br /> ==Frame of mirrors set and receptor==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Independant structure: mirror, receptor <br /> | yes <br /> | No <br /> | Fixed relative position, to be set in accordance with latitude<br /> |-<br /> |Resistance to ambiant environment <br /> | yes, punctually <br /> |yes, permanently <br /> | wind speed, hail, rain, snow, dust<br /> |-<br /> |Sufficient stiffness against vibrations and deformation <br /> | yes <br /> | yes <br /> | <br /> |-<br /> |Ground fixing <br /> | Adjustable feet <br /> | Fixed <br /> | Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...<br /> |-<br /> |Assembling easiness <br /> | yes <br /> | yes <br /> | kit possible<br /> |-<br /> |Transport easiness <br /> | yes <br /> | no<br /> | <br /> |-<br /> |Welding <br /> | the least possible <br /> | Ok <br /> | No requirement initially, compromise between : building complexity and assembling easiness<br /> | <br /> |-<br /> |Limitation of accident risks <br /> | yes <br /> | yes <br /> | at all stages : manufacturing, assembling <br /> |}<br /> <br /> == Structure of mirrors facets==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Fresnel mirror: area<br /> | 2x2 m$^2$ with 20 facets 10 cm wide|defined by the power need (5KW )<br /> |<br /> |-<br /> |Mirror deformation limitation <br /> | deflection lower than 5 mm / 0.1° facet orientation, respectively 1cm on the receptor <br /> | (a priori) depends on receptor height, valid for 1.5m height<br /> |-<br /> |Sun tracking (east west) <br /> | &gt;120° respectively 8h tracking <br /> | 12h tracking <br /> | respective rotation of 90° in 12h<br /> |-<br /> |Bad weather protection <br /> | yes <br /> | yes <br /> | for instance: 180° range (mirrors down)<br /> |-<br /> |Optical alignment possible through a tuning needless of special tools <br /> | yes <br /> | yes <br /> | Better: procedure to be updated for calibration<br /> |-<br /> | Easy switching of mirror facets <br /> | yes <br /> | yes <br /> | more generally: easy maintenance <br /> |}<br /> <br /> ==== Système de suivi (Moteurs, Programme, Capteurs) ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Real time accurate tracking of the sun motion <br /> | yes <br /> | yes <br /> | Plan a failsoft mode in case of a failure of the tracking system<br /> |-<br /> |Motorisation of mirrors<br /> | yes <br /> | yes <br /> | <br /> |-<br /> |Electricity consumption <br /> | - <br /> | Minimum achievable <br /> | Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)<br /> |-<br /> |Number of engines <br /> | Minimum <br /> | One per module or one for all the system <br /> | To be validated regarding the other technical choices (structure)<br /> |-<br /> |Sun tracking to get the right angle <br /> | yes <br /> | yes, with necessary accuracy <br /> | Goal: send all the beams of each mirror on the width of the recptor (CPC width)<br /> |-<br /> |Sensors (weather condition detection) <br /> | - <br /> | yes <br /> | * ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))<br /> |-<br /> |Fluid temperature and pressure measurements <br /> | yes <br /> | drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use<br /> |-<br /> |System automatic shutdown <br /> | Optional <br /> | Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)<br /> |-<br /> |Simple controlling panel <br /> | yes <br /> | Programming expert mode when needed, but simple to use<br /> | ideas: remote access ? consultation des informations de fonctionnement (et historique ?)To be scheduled<br /> |}<br /> <br /> ===7) Receiver unit (absorber)===<br /> [[http://forum.osefrance.org/viewforum.php?f=11|lien forum]] <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Specific design for the working fluid, natural or forced circulation <br /> | 100% <br /> | yes <br /> | <br /> |-<br /> |Selective material: High absorption qualities through all the solar spectrum : 100% , Absorbance 90%, infrared emissivity 15% : material intrinsically absorbant (or absorptive coating) <br /> | = high absorbance through all the solar spectrum and low infrared emissivity<br /> |<br /> |-<br /> |High thermal exchange between absorber and fluid <br /> | 60% <br /> | yes <br /> | material and conduction-convection in the fluid<br /> |-<br /> |The system should be thermally insulated (with respect to ambiant air, infrared radiation) <br /> | 60% <br /> | yes <br /> | see requirement for the overall thermal efficiency (insulation material above and glass below)<br /> |-<br /> |Good resistance to temperature variation (material expansion, tightness) <br /> | 60% <br /> | yes <br /> | In particular, risks related to high temperatures and pressure of fluid<br /> |}<br /> <br /> Ideas: <br /> * modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) <br /> * In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===Usage===<br /> <br /> Requirements to be better defined with user<br /> <br /> Functioning<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Position: avoid building shadow and other masks <br /> | - <br /> | ?<br /> |-<br /> |Running range <br /> | - <br /> | ? <br /> | *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude<br /> |-<br /> |Temperature level <br /> | - <br /> | ? <br /> | Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C<br /> |}<br /> <br /> ==Hydraulic circuit==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Pressure losses <br /> | - <br /> | Minimum <br /> | Limit pressure losses, above all for light fluids : air, steam<br /> |-<br /> |Open/closed circuit <br /> | - <br /> | ?<br /> | <br /> |-<br /> |Mineral scale risks <br /> | - <br /> | ? <br /> | Gives good reason to run in a closed circuit...<br /> |-<br /> |Fluid <br /> | - <br /> | ?<br /> | <br /> |}<br /> <br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143597 2016-08-28T21:44:16Z

<p>Andrea: /* Hydraulic circuit */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> In France, We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August 2016: Design, final Functional requirements<br /> September 2016: BOM + Models<br /> Octobre/Novembre 2016: Workshop<br /> December-March 2017: Testing <br /> March 2017 : on production<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ==== Design requirements ====<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> L'historique des discussions entre contributeurs est accessible par les liens respectifs vers le forum :<br /> * Structure forum [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> * Concentrator optic forum [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> * Engines, Program, Captors forum [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> * Absorber forum [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ==== General====<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Reduce risks <br /> | Pay attention to parasitic reflexions <br /> | * optical risks ; * risks related to high pressure and high temperature hydraulic circuit<br /> |-<br /> |Cost (material, production, manufacturing, assembling) <br /> | Minimum <br /> | Minimum: &lt;300€/m² <br /> | Savings possible with respect to demonstrator but not yet optimized<br /> |}<br /> <br /> === Concentrator optic===<br /> [[http://forum.osefrance.org/viewforum.php?f=10|lien forum]] <br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Optical efficiency <br /> | Reflectivity (at normal angle) 0.9 <br /> | 60-70% <br /> | To finetune: relevant/optimized geometry, cf cf [[http://forum.osefrance.org/viewtopic.php?f=9&amp;t=2920#p3353|discussion/forum]] ; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime<br /> |-<br /> | Robustness and lifetime <br /> | no requirement <br /> | 3 to 5 years <br /> | To be studied : * time? * warranty? * what efficiency loss? * renewal point, maintenance frequency. * economic balance? * also to be written in other sections : structure, optic. *to define: expensive elements, frame elements last longer: 20 years or more<br /> |-<br /> | Accesibility for cleaning and maintenance <br /> | no requirement <br /> | yes <br /> | *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted <br /> |-<br /> | Thermal efficiency of the receptor <br /> | secondary concentration on the receptor &gt; 1.5 <br /> | 70-80% efficiency as a goal<br /> |<br /> |-<br /> | Total concentration factor <br /> | between 15 and 30 <br /> | between 15 and 30 <br /> | With 20 mirrors, it reaches about 15<br /> |-<br /> | Secondary reflector (CPC) : design coordinated with absorber <br /> | 60% <br /> | yes<br /> | <br /> |}<br /> <br /> === Structure===<br /> [[http://forum.osefrance.org/viewforum.php?f=9|lien forum]] <br /> <br /> <br /> ==Frame of mirrors set and receptor==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Independant structure: mirror, receptor <br /> | yes <br /> | No <br /> | Fixed relative position, to be set in accordance with latitude<br /> |-<br /> |Resistance to ambiant environment <br /> | yes, punctually <br /> |yes, permanently <br /> | wind speed, hail, rain, snow, dust<br /> |-<br /> |Sufficient stiffness against vibrations and deformation <br /> | yes <br /> | yes <br /> | <br /> |-<br /> |Ground fixing <br /> | Adjustable feet <br /> | Fixed <br /> | Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...<br /> |-<br /> |Assembling easiness <br /> | yes <br /> | yes <br /> | kit possible<br /> |-<br /> |Transport easiness <br /> | yes <br /> | no<br /> | <br /> |-<br /> |Welding <br /> | the least possible <br /> | Ok <br /> | No requirement initially, compromise between : building complexity and assembling easiness<br /> | <br /> |-<br /> |Limitation of accident risks <br /> | yes <br /> | yes <br /> | at all stages : manufacturing, assembling <br /> |}<br /> <br /> == Structure of mirrors facets==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Fresnel mirror: area<br /> | 2x2 m$^2$ with 20 facets 10 cm wide|defined by the power need (5KW )<br /> |<br /> |-<br /> |Mirror deformation limitation <br /> | deflection lower than 5 mm / 0.1° facet orientation, respectively 1cm on the receptor <br /> | (a priori) depends on receptor height, valid for 1.5m height<br /> |-<br /> |Sun tracking (east west) <br /> | &gt;120° respectively 8h tracking <br /> | 12h tracking <br /> | respective rotation of 90° in 12h<br /> |-<br /> |Bad weather protection <br /> | yes <br /> | yes <br /> | for instance: 180° range (mirrors down)<br /> |-<br /> |Optical alignment possible through a tuning needless of special tools <br /> | yes <br /> | yes <br /> | Better: procedure to be updated for calibration<br /> |-<br /> | Easy switching of mirror facets <br /> | yes <br /> | yes <br /> | more generally: easy maintenance <br /> |}<br /> <br /> ==== Système de suivi (Moteurs, Programme, Capteurs) ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Real time accurate tracking of the sun motion <br /> | yes <br /> | yes <br /> | Plan a failsoft mode in case of a failure of the tracking system<br /> |-<br /> |Motorisation of mirrors<br /> | yes <br /> | yes <br /> | <br /> |-<br /> |Electricity consumption <br /> | - <br /> | Minimum achievable <br /> | Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)<br /> |-<br /> |Number of engines <br /> | Minimum <br /> | One per module or one for all the system <br /> | To be validated regarding the other technical choices (structure)<br /> |-<br /> |Sun tracking to get the right angle <br /> | yes <br /> | yes, with necessary accuracy <br /> | Goal: send all the beams of each mirror on the width of the recptor (CPC width)<br /> |-<br /> |Sensors (weather condition detection) <br /> | - <br /> | yes <br /> | * ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))<br /> |-<br /> |Fluid temperature and pressure measurements <br /> | yes <br /> | drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use<br /> |-<br /> |System automatic shutdown <br /> | Optional <br /> | Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)<br /> |-<br /> |Simple controlling panel <br /> | yes <br /> | Programming expert mode when needed, but simple to use<br /> | ideas: remote access ? consultation des informations de fonctionnement (et historique ?)To be scheduled<br /> |}<br /> <br /> ===7) Receiver unit (absorber)===<br /> [[http://forum.osefrance.org/viewforum.php?f=11|lien forum]] <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Specific design for the working fluid, natural or forced circulation <br /> | 100% <br /> | yes <br /> | <br /> |-<br /> |Selective material: High absorption qualities through all the solar spectrum : 100% , Absorbance 90%, infrared emissivity 15% : material intrinsically absorbant (or absorptive coating) <br /> | = high absorbance through all the solar spectrum and low infrared emissivity<br /> |<br /> |-<br /> |High thermal exchange between absorber and fluid <br /> | 60% <br /> | yes <br /> | material and conduction-convection in the fluid<br /> |-<br /> |The system should be thermally insulated (with respect to ambiant air, infrared radiation) <br /> | 60% <br /> | yes <br /> | see requirement for the overall thermal efficiency (insulation material above and glass below)<br /> |-<br /> |Good resistance to temperature variation (material expansion, tightness) <br /> | 60% <br /> | yes <br /> | In particular, risks related to high temperatures and pressure of fluid<br /> |}<br /> <br /> Ideas: <br /> * modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) <br /> * In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===Usage===<br /> <br /> Requirements to be better defined with user<br /> <br /> Functioning<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Position: avoid building shadow and other masks <br /> | - <br /> | ?<br /> |-<br /> |Running range <br /> | - <br /> | ? <br /> | *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude<br /> |-<br /> |Temperature level <br /> | - <br /> | ? <br /> | Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C<br /> |}<br /> <br /> ==Hydraulic circuit==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Pressure losses <br /> | - <br /> | Minimum <br /> | Limit pressure losses, above all for light fluids : air, steam<br /> |-<br /> |Open/closed circuit <br /> | - <br /> | ?<br /> | <br /> |-<br /> |Mineral scale risks <br /> | - <br /> | ? <br /> | Gives good reason to run in a closed circuit...|-<br /> |Fluid <br /> | - <br /> | ?<br /> | <br /> |}<br /> <br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143595 2016-08-28T21:43:01Z

<p>Andrea: /* Structure of mirrors facets */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> In France, We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August 2016: Design, final Functional requirements<br /> September 2016: BOM + Models<br /> Octobre/Novembre 2016: Workshop<br /> December-March 2017: Testing <br /> March 2017 : on production<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ==== Design requirements ====<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> L'historique des discussions entre contributeurs est accessible par les liens respectifs vers le forum :<br /> * Structure forum [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> * Concentrator optic forum [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> * Engines, Program, Captors forum [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> * Absorber forum [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ==== General====<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Reduce risks <br /> | Pay attention to parasitic reflexions <br /> | * optical risks ; * risks related to high pressure and high temperature hydraulic circuit<br /> |-<br /> |Cost (material, production, manufacturing, assembling) <br /> | Minimum <br /> | Minimum: &lt;300€/m² <br /> | Savings possible with respect to demonstrator but not yet optimized<br /> |}<br /> <br /> === Concentrator optic===<br /> [[http://forum.osefrance.org/viewforum.php?f=10|lien forum]] <br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Optical efficiency <br /> | Reflectivity (at normal angle) 0.9 <br /> | 60-70% <br /> | To finetune: relevant/optimized geometry, cf cf [[http://forum.osefrance.org/viewtopic.php?f=9&amp;t=2920#p3353|discussion/forum]] ; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime<br /> |-<br /> | Robustness and lifetime <br /> | no requirement <br /> | 3 to 5 years <br /> | To be studied : * time? * warranty? * what efficiency loss? * renewal point, maintenance frequency. * economic balance? * also to be written in other sections : structure, optic. *to define: expensive elements, frame elements last longer: 20 years or more<br /> |-<br /> | Accesibility for cleaning and maintenance <br /> | no requirement <br /> | yes <br /> | *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted <br /> |-<br /> | Thermal efficiency of the receptor <br /> | secondary concentration on the receptor &gt; 1.5 <br /> | 70-80% efficiency as a goal<br /> |<br /> |-<br /> | Total concentration factor <br /> | between 15 and 30 <br /> | between 15 and 30 <br /> | With 20 mirrors, it reaches about 15<br /> |-<br /> | Secondary reflector (CPC) : design coordinated with absorber <br /> | 60% <br /> | yes<br /> | <br /> |}<br /> <br /> === Structure===<br /> [[http://forum.osefrance.org/viewforum.php?f=9|lien forum]] <br /> <br /> <br /> ==Frame of mirrors set and receptor==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Independant structure: mirror, receptor <br /> | yes <br /> | No <br /> | Fixed relative position, to be set in accordance with latitude<br /> |-<br /> |Resistance to ambiant environment <br /> | yes, punctually <br /> |yes, permanently <br /> | wind speed, hail, rain, snow, dust<br /> |-<br /> |Sufficient stiffness against vibrations and deformation <br /> | yes <br /> | yes <br /> | <br /> |-<br /> |Ground fixing <br /> | Adjustable feet <br /> | Fixed <br /> | Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...<br /> |-<br /> |Assembling easiness <br /> | yes <br /> | yes <br /> | kit possible<br /> |-<br /> |Transport easiness <br /> | yes <br /> | no<br /> | <br /> |-<br /> |Welding <br /> | the least possible <br /> | Ok <br /> | No requirement initially, compromise between : building complexity and assembling easiness<br /> | <br /> |-<br /> |Limitation of accident risks <br /> | yes <br /> | yes <br /> | at all stages : manufacturing, assembling <br /> |}<br /> <br /> == Structure of mirrors facets==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Fresnel mirror: area<br /> | 2x2 m$^2$ with 20 facets 10 cm wide|defined by the power need (5KW )<br /> |<br /> |-<br /> |Mirror deformation limitation <br /> | deflection lower than 5 mm / 0.1° facet orientation, respectively 1cm on the receptor <br /> | (a priori) depends on receptor height, valid for 1.5m height<br /> |-<br /> |Sun tracking (east west) <br /> | &gt;120° respectively 8h tracking <br /> | 12h tracking <br /> | respective rotation of 90° in 12h<br /> |-<br /> |Bad weather protection <br /> | yes <br /> | yes <br /> | for instance: 180° range (mirrors down)<br /> |-<br /> |Optical alignment possible through a tuning needless of special tools <br /> | yes <br /> | yes <br /> | Better: procedure to be updated for calibration<br /> |-<br /> | Easy switching of mirror facets <br /> | yes <br /> | yes <br /> | more generally: easy maintenance <br /> |}<br /> <br /> ==== Système de suivi (Moteurs, Programme, Capteurs) ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Real time accurate tracking of the sun motion <br /> | yes <br /> | yes <br /> | Plan a failsoft mode in case of a failure of the tracking system<br /> |-<br /> |Motorisation of mirrors<br /> | yes <br /> | yes <br /> | <br /> |-<br /> |Electricity consumption <br /> | - <br /> | Minimum achievable <br /> | Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)<br /> |-<br /> |Number of engines <br /> | Minimum <br /> | One per module or one for all the system <br /> | To be validated regarding the other technical choices (structure)<br /> |-<br /> |Sun tracking to get the right angle <br /> | yes <br /> | yes, with necessary accuracy <br /> | Goal: send all the beams of each mirror on the width of the recptor (CPC width)<br /> |-<br /> |Sensors (weather condition detection) <br /> | - <br /> | yes <br /> | * ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))<br /> |-<br /> |Fluid temperature and pressure measurements <br /> | yes <br /> | drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use<br /> |-<br /> |System automatic shutdown <br /> | Optional <br /> | Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)<br /> |-<br /> |Simple controlling panel <br /> | yes <br /> | Programming expert mode when needed, but simple to use<br /> | ideas: remote access ? consultation des informations de fonctionnement (et historique ?)To be scheduled<br /> |}<br /> <br /> ===7) Receiver unit (absorber)===<br /> [[http://forum.osefrance.org/viewforum.php?f=11|lien forum]] <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Specific design for the working fluid, natural or forced circulation <br /> | 100% <br /> | yes <br /> | <br /> |-<br /> |Selective material: High absorption qualities through all the solar spectrum : 100% , Absorbance 90%, infrared emissivity 15% : material intrinsically absorbant (or absorptive coating) <br /> | = high absorbance through all the solar spectrum and low infrared emissivity<br /> |<br /> |-<br /> |High thermal exchange between absorber and fluid <br /> | 60% <br /> | yes <br /> | material and conduction-convection in the fluid<br /> |-<br /> |The system should be thermally insulated (with respect to ambiant air, infrared radiation) <br /> | 60% <br /> | yes <br /> | see requirement for the overall thermal efficiency (insulation material above and glass below)<br /> |-<br /> |Good resistance to temperature variation (material expansion, tightness) <br /> | 60% <br /> | yes <br /> | In particular, risks related to high temperatures and pressure of fluid<br /> |}<br /> <br /> Ideas: <br /> * modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) <br /> * In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===Usage===<br /> <br /> Requirements to be better defined with user<br /> <br /> Functioning<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Position: avoid building shadow and other masks <br /> | - <br /> | ?<br /> |-<br /> |Running range <br /> | - <br /> | ? <br /> | *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude<br /> |-<br /> |Temperature level <br /> | - <br /> | ? <br /> | Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C<br /> |}<br /> <br /> ==Hydraulic circuit==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Pressure losses | - | Minimum | Limit pressure losses, above all for light fluids : air, steam|<br /> |Open/closed circuit | - | ?| |<br /> |Mineral scale risks | - | ? | Gives good reason to run in a closed circuit...|<br /> |Fluid | - | ?| |<br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143593 2016-08-28T21:36:10Z

<p>Andrea: /* Frame of mirrors set and receptor */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> In France, We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August 2016: Design, final Functional requirements<br /> September 2016: BOM + Models<br /> Octobre/Novembre 2016: Workshop<br /> December-March 2017: Testing <br /> March 2017 : on production<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ==== Design requirements ====<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> L'historique des discussions entre contributeurs est accessible par les liens respectifs vers le forum :<br /> * Structure forum [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> * Concentrator optic forum [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> * Engines, Program, Captors forum [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> * Absorber forum [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ==== General====<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Reduce risks <br /> | Pay attention to parasitic reflexions <br /> | * optical risks ; * risks related to high pressure and high temperature hydraulic circuit<br /> |-<br /> |Cost (material, production, manufacturing, assembling) <br /> | Minimum <br /> | Minimum: &lt;300€/m² <br /> | Savings possible with respect to demonstrator but not yet optimized<br /> |}<br /> <br /> === Concentrator optic===<br /> [[http://forum.osefrance.org/viewforum.php?f=10|lien forum]] <br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Optical efficiency <br /> | Reflectivity (at normal angle) 0.9 <br /> | 60-70% <br /> | To finetune: relevant/optimized geometry, cf cf [[http://forum.osefrance.org/viewtopic.php?f=9&amp;t=2920#p3353|discussion/forum]] ; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime<br /> |-<br /> | Robustness and lifetime <br /> | no requirement <br /> | 3 to 5 years <br /> | To be studied : * time? * warranty? * what efficiency loss? * renewal point, maintenance frequency. * economic balance? * also to be written in other sections : structure, optic. *to define: expensive elements, frame elements last longer: 20 years or more<br /> |-<br /> | Accesibility for cleaning and maintenance <br /> | no requirement <br /> | yes <br /> | *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted <br /> |-<br /> | Thermal efficiency of the receptor <br /> | secondary concentration on the receptor &gt; 1.5 <br /> | 70-80% efficiency as a goal<br /> |<br /> |-<br /> | Total concentration factor <br /> | between 15 and 30 <br /> | between 15 and 30 <br /> | With 20 mirrors, it reaches about 15<br /> |-<br /> | Secondary reflector (CPC) : design coordinated with absorber <br /> | 60% <br /> | yes<br /> | <br /> |}<br /> <br /> === Structure===<br /> [[http://forum.osefrance.org/viewforum.php?f=9|lien forum]] <br /> <br /> <br /> ==Frame of mirrors set and receptor==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Independant structure: mirror, receptor <br /> | yes <br /> | No <br /> | Fixed relative position, to be set in accordance with latitude<br /> |-<br /> |Resistance to ambiant environment <br /> | yes, punctually <br /> |yes, permanently <br /> | wind speed, hail, rain, snow, dust<br /> |-<br /> |Sufficient stiffness against vibrations and deformation <br /> | yes <br /> | yes <br /> | <br /> |-<br /> |Ground fixing <br /> | Adjustable feet <br /> | Fixed <br /> | Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...<br /> |-<br /> |Assembling easiness <br /> | yes <br /> | yes <br /> | kit possible<br /> |-<br /> |Transport easiness <br /> | yes <br /> | no<br /> | <br /> |-<br /> |Welding <br /> | the least possible <br /> | Ok <br /> | No requirement initially, compromise between : building complexity and assembling easiness<br /> | <br /> |-<br /> |Limitation of accident risks <br /> | yes <br /> | yes <br /> | at all stages : manufacturing, assembling <br /> |}<br /> <br /> == Structure of mirrors facets==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Fresnel mirror: area| 2x2 m$^2$ with 20 facets 10 cm wide|defined by the power need (5KW )||<br /> |Mirror deformation limitation | deflection lower than 5 mm | 0.1° facet orientation, respectively 1cm on the receptor | (a priori) depends on receptor height, valid for 1.5m height|<br /> |Sun tracking (east west) | &gt;120° respectively 8h tracking | 12h tracking | respective rotation of 90° in 12h|<br /> |Bad weather protection | yes | yes | for instance: 180° range (mirrors down)|<br /> |Optical alignment possible through a tuning needless of special tools | yes | yes|Better: procedure to be updated for calibration|<br /> |Easy switching of mirror facets | yes | yes | more generally: easy maintenance|<br /> <br /> ==== Système de suivi (Moteurs, Programme, Capteurs) ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Real time accurate tracking of the sun motion | yes | yes | Plan a failsoft mode in case of a failure of the tracking system<br /> |Motorisation of mirrors | yes | yes | |<br /> |Electricity consumption | - | Minimum achievable | Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)|<br /> |Number of engines | Minimum | One per module or one for all the system | To be validated regarding the other technical choices (structure)|<br /> |Sun tracking to get the right angle | yes | yes, with necessary accuracy | Goal: send all the beams of each mirror on the width of the recptor (CPC width)|<br /> |Sensors (weather condition detection) | - | yes | * ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))|<br /> |Fluid temperature and pressure measurements | yes | drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use|<br /> |System automatic shutdown | Optional | Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)|<br /> |Simple controlling panel | yes | Programming expert mode when needed, but simple to use| ideas: remote access ? consultation des informations de fonctionnement (et historique ?)To be scheduled|<br /> <br /> ===7) Receiver unit (absorber)===<br /> [[http://forum.osefrance.org/viewforum.php?f=11|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Specific design for the working fluid, natural or forced circulation | 100% | yes | |<br /> |Selective material: High absorption qualities through all the solar spectrum : 100% , Absorbance 90%, infrared emissivity 15% : material intrinsically absorbant (or absorptive coating) | = high absorbance through all the solar spectrum and low infrared emissivity|<br /> |High thermal exchange between absorber and fluid | 60% | yes | material and conduction-convection in the fluid|<br /> |The system should be thermally insulated (with respect to ambiant air, infrared radiation) | 60% | yes | see requirement for the overall thermal efficiency (insulation material above and glass below)|<br /> |Good resistance to temperature variation (material expansion, tightness) | 60% | yes | In particular, risks related to high temperatures and pressure of fluid|<br /> <br /> Ideas: <br /> * modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) <br /> * In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===Usage===<br /> <br /> Requirements to be better defined with user<br /> <br /> Functioning<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Position: avoid building shadow and other masks | - |?|<br /> |Running range | - | ? | *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude|<br /> |Temperature level | - | ? | Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C|<br /> <br /> ==Hydraulic circuit==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Pressure losses | - | Minimum | Limit pressure losses, above all for light fluids : air, steam|<br /> |Open/closed circuit | - | ?| |<br /> |Mineral scale risks | - | ? | Gives good reason to run in a closed circuit...|<br /> |Fluid | - | ?| |<br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143592 2016-08-28T21:34:51Z

<p>Andrea: /* Frame of mirrors set and receptor */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> In France, We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August 2016: Design, final Functional requirements<br /> September 2016: BOM + Models<br /> Octobre/Novembre 2016: Workshop<br /> December-March 2017: Testing <br /> March 2017 : on production<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ==== Design requirements ====<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> L'historique des discussions entre contributeurs est accessible par les liens respectifs vers le forum :<br /> * Structure forum [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> * Concentrator optic forum [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> * Engines, Program, Captors forum [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> * Absorber forum [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ==== General====<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Reduce risks <br /> | Pay attention to parasitic reflexions <br /> | * optical risks ; * risks related to high pressure and high temperature hydraulic circuit<br /> |-<br /> |Cost (material, production, manufacturing, assembling) <br /> | Minimum <br /> | Minimum: &lt;300€/m² <br /> | Savings possible with respect to demonstrator but not yet optimized<br /> |}<br /> <br /> === Concentrator optic===<br /> [[http://forum.osefrance.org/viewforum.php?f=10|lien forum]] <br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Optical efficiency <br /> | Reflectivity (at normal angle) 0.9 <br /> | 60-70% <br /> | To finetune: relevant/optimized geometry, cf cf [[http://forum.osefrance.org/viewtopic.php?f=9&amp;t=2920#p3353|discussion/forum]] ; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime<br /> |-<br /> | Robustness and lifetime <br /> | no requirement <br /> | 3 to 5 years <br /> | To be studied : * time? * warranty? * what efficiency loss? * renewal point, maintenance frequency. * economic balance? * also to be written in other sections : structure, optic. *to define: expensive elements, frame elements last longer: 20 years or more<br /> |-<br /> | Accesibility for cleaning and maintenance <br /> | no requirement <br /> | yes <br /> | *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted <br /> |-<br /> | Thermal efficiency of the receptor <br /> | secondary concentration on the receptor &gt; 1.5 <br /> | 70-80% efficiency as a goal<br /> |<br /> |-<br /> | Total concentration factor <br /> | between 15 and 30 <br /> | between 15 and 30 <br /> | With 20 mirrors, it reaches about 15<br /> |-<br /> | Secondary reflector (CPC) : design coordinated with absorber <br /> | 60% <br /> | yes<br /> | <br /> |}<br /> <br /> === Structure===<br /> [[http://forum.osefrance.org/viewforum.php?f=9|lien forum]] <br /> <br /> <br /> ==Frame of mirrors set and receptor==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Independant structure: mirror, receptor | yes | No | Fixed relative position, to be set in accordance with latitude<br /> |-<br /> |Resistance to ambiant environment | yes, punctually |yes, permanently | wind speed, hail, rain, snow, dust<br /> |-<br /> |Sufficient stiffness against vibrations and deformation | yes | yes | <br /> |-<br /> |Ground fixing | Adjustable feet | Fixed | Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...<br /> |-<br /> |Assembling easiness | yes | yes | kit possible<br /> |-<br /> |Transport easiness | yes | no| <br /> |-<br /> |Welding | the least possible | Ok | No requirement initially, compromise between : building complexity and assembling easiness| <br /> |-<br /> |Limitation of accident risks | yes | yes | at all stages : manufacturing, assembling <br /> |}<br /> <br /> == Structure of mirrors facets==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Fresnel mirror: area| 2x2 m$^2$ with 20 facets 10 cm wide|defined by the power need (5KW )||<br /> |Mirror deformation limitation | deflection lower than 5 mm | 0.1° facet orientation, respectively 1cm on the receptor | (a priori) depends on receptor height, valid for 1.5m height|<br /> |Sun tracking (east west) | &gt;120° respectively 8h tracking | 12h tracking | respective rotation of 90° in 12h|<br /> |Bad weather protection | yes | yes | for instance: 180° range (mirrors down)|<br /> |Optical alignment possible through a tuning needless of special tools | yes | yes|Better: procedure to be updated for calibration|<br /> |Easy switching of mirror facets | yes | yes | more generally: easy maintenance|<br /> <br /> ==== Système de suivi (Moteurs, Programme, Capteurs) ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Real time accurate tracking of the sun motion | yes | yes | Plan a failsoft mode in case of a failure of the tracking system<br /> |Motorisation of mirrors | yes | yes | |<br /> |Electricity consumption | - | Minimum achievable | Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)|<br /> |Number of engines | Minimum | One per module or one for all the system | To be validated regarding the other technical choices (structure)|<br /> |Sun tracking to get the right angle | yes | yes, with necessary accuracy | Goal: send all the beams of each mirror on the width of the recptor (CPC width)|<br /> |Sensors (weather condition detection) | - | yes | * ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))|<br /> |Fluid temperature and pressure measurements | yes | drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use|<br /> |System automatic shutdown | Optional | Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)|<br /> |Simple controlling panel | yes | Programming expert mode when needed, but simple to use| ideas: remote access ? consultation des informations de fonctionnement (et historique ?)To be scheduled|<br /> <br /> ===7) Receiver unit (absorber)===<br /> [[http://forum.osefrance.org/viewforum.php?f=11|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Specific design for the working fluid, natural or forced circulation | 100% | yes | |<br /> |Selective material: High absorption qualities through all the solar spectrum : 100% , Absorbance 90%, infrared emissivity 15% : material intrinsically absorbant (or absorptive coating) | = high absorbance through all the solar spectrum and low infrared emissivity|<br /> |High thermal exchange between absorber and fluid | 60% | yes | material and conduction-convection in the fluid|<br /> |The system should be thermally insulated (with respect to ambiant air, infrared radiation) | 60% | yes | see requirement for the overall thermal efficiency (insulation material above and glass below)|<br /> |Good resistance to temperature variation (material expansion, tightness) | 60% | yes | In particular, risks related to high temperatures and pressure of fluid|<br /> <br /> Ideas: <br /> * modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) <br /> * In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===Usage===<br /> <br /> Requirements to be better defined with user<br /> <br /> Functioning<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Position: avoid building shadow and other masks | - |?|<br /> |Running range | - | ? | *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude|<br /> |Temperature level | - | ? | Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C|<br /> <br /> ==Hydraulic circuit==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Pressure losses | - | Minimum | Limit pressure losses, above all for light fluids : air, steam|<br /> |Open/closed circuit | - | ?| |<br /> |Mineral scale risks | - | ? | Gives good reason to run in a closed circuit...|<br /> |Fluid | - | ?| |<br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143591 2016-08-28T21:34:08Z

<p>Andrea: /* Frame of mirrors set and receptor */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> In France, We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August 2016: Design, final Functional requirements<br /> September 2016: BOM + Models<br /> Octobre/Novembre 2016: Workshop<br /> December-March 2017: Testing <br /> March 2017 : on production<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ==== Design requirements ====<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> L'historique des discussions entre contributeurs est accessible par les liens respectifs vers le forum :<br /> * Structure forum [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> * Concentrator optic forum [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> * Engines, Program, Captors forum [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> * Absorber forum [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ==== General====<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Reduce risks <br /> | Pay attention to parasitic reflexions <br /> | * optical risks ; * risks related to high pressure and high temperature hydraulic circuit<br /> |-<br /> |Cost (material, production, manufacturing, assembling) <br /> | Minimum <br /> | Minimum: &lt;300€/m² <br /> | Savings possible with respect to demonstrator but not yet optimized<br /> |}<br /> <br /> === Concentrator optic===<br /> [[http://forum.osefrance.org/viewforum.php?f=10|lien forum]] <br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Optical efficiency <br /> | Reflectivity (at normal angle) 0.9 <br /> | 60-70% <br /> | To finetune: relevant/optimized geometry, cf cf [[http://forum.osefrance.org/viewtopic.php?f=9&amp;t=2920#p3353|discussion/forum]] ; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime<br /> |-<br /> | Robustness and lifetime <br /> | no requirement <br /> | 3 to 5 years <br /> | To be studied : * time? * warranty? * what efficiency loss? * renewal point, maintenance frequency. * economic balance? * also to be written in other sections : structure, optic. *to define: expensive elements, frame elements last longer: 20 years or more<br /> |-<br /> | Accesibility for cleaning and maintenance <br /> | no requirement <br /> | yes <br /> | *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted <br /> |-<br /> | Thermal efficiency of the receptor <br /> | secondary concentration on the receptor &gt; 1.5 <br /> | 70-80% efficiency as a goal<br /> |<br /> |-<br /> | Total concentration factor <br /> | between 15 and 30 <br /> | between 15 and 30 <br /> | With 20 mirrors, it reaches about 15<br /> |-<br /> | Secondary reflector (CPC) : design coordinated with absorber <br /> | 60% <br /> | yes<br /> | <br /> |}<br /> <br /> === Structure===<br /> [[http://forum.osefrance.org/viewforum.php?f=9|lien forum]] <br /> <br /> <br /> ==Frame of mirrors set and receptor==<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> |Independant structure: mirror, receptor | yes | No | Fixed relative position, to be set in accordance with latitude|-<br /> |Resistance to ambiant environment | yes, punctually |yes, permanently | wind speed, hail, rain, snow, dust|-<br /> |Sufficient stiffness against vibrations and deformation | yes | yes | |-<br /> |Ground fixing | Adjustable feet | Fixed | Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...|-<br /> |Assembling easiness | yes | yes | kit possible|-<br /> |Transport easiness | yes | no| |-<br /> |Welding | the least possible | Ok | No requirement initially, compromise between : building complexity and assembling easiness| |-<br /> |Limitation of accident risks | yes | yes | at all stages : manufacturing, assembling <br /> |}<br /> <br /> == Structure of mirrors facets==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Fresnel mirror: area| 2x2 m$^2$ with 20 facets 10 cm wide|defined by the power need (5KW )||<br /> |Mirror deformation limitation | deflection lower than 5 mm | 0.1° facet orientation, respectively 1cm on the receptor | (a priori) depends on receptor height, valid for 1.5m height|<br /> |Sun tracking (east west) | &gt;120° respectively 8h tracking | 12h tracking | respective rotation of 90° in 12h|<br /> |Bad weather protection | yes | yes | for instance: 180° range (mirrors down)|<br /> |Optical alignment possible through a tuning needless of special tools | yes | yes|Better: procedure to be updated for calibration|<br /> |Easy switching of mirror facets | yes | yes | more generally: easy maintenance|<br /> <br /> ==== Système de suivi (Moteurs, Programme, Capteurs) ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Real time accurate tracking of the sun motion | yes | yes | Plan a failsoft mode in case of a failure of the tracking system<br /> |Motorisation of mirrors | yes | yes | |<br /> |Electricity consumption | - | Minimum achievable | Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)|<br /> |Number of engines | Minimum | One per module or one for all the system | To be validated regarding the other technical choices (structure)|<br /> |Sun tracking to get the right angle | yes | yes, with necessary accuracy | Goal: send all the beams of each mirror on the width of the recptor (CPC width)|<br /> |Sensors (weather condition detection) | - | yes | * ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))|<br /> |Fluid temperature and pressure measurements | yes | drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use|<br /> |System automatic shutdown | Optional | Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)|<br /> |Simple controlling panel | yes | Programming expert mode when needed, but simple to use| ideas: remote access ? consultation des informations de fonctionnement (et historique ?)To be scheduled|<br /> <br /> ===7) Receiver unit (absorber)===<br /> [[http://forum.osefrance.org/viewforum.php?f=11|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Specific design for the working fluid, natural or forced circulation | 100% | yes | |<br /> |Selective material: High absorption qualities through all the solar spectrum : 100% , Absorbance 90%, infrared emissivity 15% : material intrinsically absorbant (or absorptive coating) | = high absorbance through all the solar spectrum and low infrared emissivity|<br /> |High thermal exchange between absorber and fluid | 60% | yes | material and conduction-convection in the fluid|<br /> |The system should be thermally insulated (with respect to ambiant air, infrared radiation) | 60% | yes | see requirement for the overall thermal efficiency (insulation material above and glass below)|<br /> |Good resistance to temperature variation (material expansion, tightness) | 60% | yes | In particular, risks related to high temperatures and pressure of fluid|<br /> <br /> Ideas: <br /> * modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) <br /> * In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===Usage===<br /> <br /> Requirements to be better defined with user<br /> <br /> Functioning<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Position: avoid building shadow and other masks | - |?|<br /> |Running range | - | ? | *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude|<br /> |Temperature level | - | ? | Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C|<br /> <br /> ==Hydraulic circuit==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Pressure losses | - | Minimum | Limit pressure losses, above all for light fluids : air, steam|<br /> |Open/closed circuit | - | ?| |<br /> |Mineral scale risks | - | ? | Gives good reason to run in a closed circuit...|<br /> |Fluid | - | ?| |<br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143590 2016-08-28T21:32:41Z

<p>Andrea: /* Concentrator optic */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> In France, We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August 2016: Design, final Functional requirements<br /> September 2016: BOM + Models<br /> Octobre/Novembre 2016: Workshop<br /> December-March 2017: Testing <br /> March 2017 : on production<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ==== Design requirements ====<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> L'historique des discussions entre contributeurs est accessible par les liens respectifs vers le forum :<br /> * Structure forum [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> * Concentrator optic forum [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> * Engines, Program, Captors forum [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> * Absorber forum [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ==== General====<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Reduce risks <br /> | Pay attention to parasitic reflexions <br /> | * optical risks ; * risks related to high pressure and high temperature hydraulic circuit<br /> |-<br /> |Cost (material, production, manufacturing, assembling) <br /> | Minimum <br /> | Minimum: &lt;300€/m² <br /> | Savings possible with respect to demonstrator but not yet optimized<br /> |}<br /> <br /> === Concentrator optic===<br /> [[http://forum.osefrance.org/viewforum.php?f=10|lien forum]] <br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Optical efficiency <br /> | Reflectivity (at normal angle) 0.9 <br /> | 60-70% <br /> | To finetune: relevant/optimized geometry, cf cf [[http://forum.osefrance.org/viewtopic.php?f=9&amp;t=2920#p3353|discussion/forum]] ; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime<br /> |-<br /> | Robustness and lifetime <br /> | no requirement <br /> | 3 to 5 years <br /> | To be studied : * time? * warranty? * what efficiency loss? * renewal point, maintenance frequency. * economic balance? * also to be written in other sections : structure, optic. *to define: expensive elements, frame elements last longer: 20 years or more<br /> |-<br /> | Accesibility for cleaning and maintenance <br /> | no requirement <br /> | yes <br /> | *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted <br /> |-<br /> | Thermal efficiency of the receptor <br /> | secondary concentration on the receptor &gt; 1.5 <br /> | 70-80% efficiency as a goal<br /> |<br /> |-<br /> | Total concentration factor <br /> | between 15 and 30 <br /> | between 15 and 30 <br /> | With 20 mirrors, it reaches about 15<br /> |-<br /> | Secondary reflector (CPC) : design coordinated with absorber <br /> | 60% <br /> | yes<br /> | <br /> |}<br /> <br /> === Structure===<br /> [[http://forum.osefrance.org/viewforum.php?f=9|lien forum]] <br /> <br /> <br /> ==Frame of mirrors set and receptor==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Independant structure: mirror, receptor | yes | No | Fixed relative position, to be set in accordance with latitude|<br /> |Resistance to ambiant environment | yes, punctually |yes, permanently | wind speed, hail, rain, snow, dust|<br /> |Sufficient stiffness against vibrations and deformation | yes | yes | |<br /> |Ground fixing | Adjustable feet | Fixed | Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...|<br /> |Assembling easiness | yes | yes | kit possible|<br /> |Transport easiness | yes | no|<br /> |Welding | the least possible | Ok | No requirement initially, compromise between : building complexity and assembling easiness|<br /> |Limitation of accident risks | yes | yes | at all stages : manufacturing, assembling |<br /> <br /> == Structure of mirrors facets==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Fresnel mirror: area| 2x2 m$^2$ with 20 facets 10 cm wide|defined by the power need (5KW )||<br /> |Mirror deformation limitation | deflection lower than 5 mm | 0.1° facet orientation, respectively 1cm on the receptor | (a priori) depends on receptor height, valid for 1.5m height|<br /> |Sun tracking (east west) | &gt;120° respectively 8h tracking | 12h tracking | respective rotation of 90° in 12h|<br /> |Bad weather protection | yes | yes | for instance: 180° range (mirrors down)|<br /> |Optical alignment possible through a tuning needless of special tools | yes | yes|Better: procedure to be updated for calibration|<br /> |Easy switching of mirror facets | yes | yes | more generally: easy maintenance|<br /> <br /> ==== Système de suivi (Moteurs, Programme, Capteurs) ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Real time accurate tracking of the sun motion | yes | yes | Plan a failsoft mode in case of a failure of the tracking system<br /> |Motorisation of mirrors | yes | yes | |<br /> |Electricity consumption | - | Minimum achievable | Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)|<br /> |Number of engines | Minimum | One per module or one for all the system | To be validated regarding the other technical choices (structure)|<br /> |Sun tracking to get the right angle | yes | yes, with necessary accuracy | Goal: send all the beams of each mirror on the width of the recptor (CPC width)|<br /> |Sensors (weather condition detection) | - | yes | * ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))|<br /> |Fluid temperature and pressure measurements | yes | drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use|<br /> |System automatic shutdown | Optional | Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)|<br /> |Simple controlling panel | yes | Programming expert mode when needed, but simple to use| ideas: remote access ? consultation des informations de fonctionnement (et historique ?)To be scheduled|<br /> <br /> ===7) Receiver unit (absorber)===<br /> [[http://forum.osefrance.org/viewforum.php?f=11|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Specific design for the working fluid, natural or forced circulation | 100% | yes | |<br /> |Selective material: High absorption qualities through all the solar spectrum : 100% , Absorbance 90%, infrared emissivity 15% : material intrinsically absorbant (or absorptive coating) | = high absorbance through all the solar spectrum and low infrared emissivity|<br /> |High thermal exchange between absorber and fluid | 60% | yes | material and conduction-convection in the fluid|<br /> |The system should be thermally insulated (with respect to ambiant air, infrared radiation) | 60% | yes | see requirement for the overall thermal efficiency (insulation material above and glass below)|<br /> |Good resistance to temperature variation (material expansion, tightness) | 60% | yes | In particular, risks related to high temperatures and pressure of fluid|<br /> <br /> Ideas: <br /> * modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) <br /> * In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===Usage===<br /> <br /> Requirements to be better defined with user<br /> <br /> Functioning<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Position: avoid building shadow and other masks | - |?|<br /> |Running range | - | ? | *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude|<br /> |Temperature level | - | ? | Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C|<br /> <br /> ==Hydraulic circuit==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Pressure losses | - | Minimum | Limit pressure losses, above all for light fluids : air, steam|<br /> |Open/closed circuit | - | ?| |<br /> |Mineral scale risks | - | ? | Gives good reason to run in a closed circuit...|<br /> |Fluid | - | ?| |<br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143588 2016-08-28T21:30:24Z

<p>Andrea: /* General */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> In France, We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August 2016: Design, final Functional requirements<br /> September 2016: BOM + Models<br /> Octobre/Novembre 2016: Workshop<br /> December-March 2017: Testing <br /> March 2017 : on production<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ==== Design requirements ====<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> L'historique des discussions entre contributeurs est accessible par les liens respectifs vers le forum :<br /> * Structure forum [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> * Concentrator optic forum [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> * Engines, Program, Captors forum [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> * Absorber forum [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ==== General====<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! scope=&quot;col&quot;| Requirement <br /> ! scope=&quot;col&quot;| Demonstrator <br /> ! scope=&quot;col&quot;| Prototype <br /> ! scope=&quot;col&quot;| Comments for protototype<br /> |-<br /> | Reduce risks <br /> | Pay attention to parasitic reflexions <br /> | * optical risks ; * risks related to high pressure and high temperature hydraulic circuit<br /> |-<br /> |Cost (material, production, manufacturing, assembling) <br /> | Minimum <br /> | Minimum: &lt;300€/m² <br /> | Savings possible with respect to demonstrator but not yet optimized<br /> |}<br /> <br /> === Concentrator optic===<br /> [[http://forum.osefrance.org/viewforum.php?f=10|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Optical efficiency | Reflectivity (at normal angle) 0.9 | 60-70% | To fienetune: relevant/optimized geometry, cf cf [[http://forum.osefrance.org/viewtopic.php?f=9&amp;t=2920#p3353|discussion/forum]] ; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime|<br /> |Robustness and lifetime | no requirement | 3 to 5 years | To be studied : * time? * warranty? * what efficiency loss? * renewal point, maintenance frequency. * economic balance? * also to be written in other sections : structure, optic. *to define: expensive elements, frame elements last longer: 20 years or more|<br /> |Accesibility for cleaning and maintenance | no requirement | yes | *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted|<br /> |Thermal efficiency of the receptor | secondary concentration on the receptor &gt; 1.5 | 70-80% efficiency as a goal||<br /> |Total concentration factor | between 15 and 30 | between 15 and 30 | With 20 mirrors, it reaches about 15|<br /> |Secondary reflector (CPC) : design coordinated with absorber | 60% | yes| |<br /> <br /> <br /> === Structure===<br /> [[http://forum.osefrance.org/viewforum.php?f=9|lien forum]] <br /> <br /> <br /> ==Frame of mirrors set and receptor==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Independant structure: mirror, receptor | yes | No | Fixed relative position, to be set in accordance with latitude|<br /> |Resistance to ambiant environment | yes, punctually |yes, permanently | wind speed, hail, rain, snow, dust|<br /> |Sufficient stiffness against vibrations and deformation | yes | yes | |<br /> |Ground fixing | Adjustable feet | Fixed | Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...|<br /> |Assembling easiness | yes | yes | kit possible|<br /> |Transport easiness | yes | no|<br /> |Welding | the least possible | Ok | No requirement initially, compromise between : building complexity and assembling easiness|<br /> |Limitation of accident risks | yes | yes | at all stages : manufacturing, assembling |<br /> <br /> == Structure of mirrors facets==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Fresnel mirror: area| 2x2 m$^2$ with 20 facets 10 cm wide|defined by the power need (5KW )||<br /> |Mirror deformation limitation | deflection lower than 5 mm | 0.1° facet orientation, respectively 1cm on the receptor | (a priori) depends on receptor height, valid for 1.5m height|<br /> |Sun tracking (east west) | &gt;120° respectively 8h tracking | 12h tracking | respective rotation of 90° in 12h|<br /> |Bad weather protection | yes | yes | for instance: 180° range (mirrors down)|<br /> |Optical alignment possible through a tuning needless of special tools | yes | yes|Better: procedure to be updated for calibration|<br /> |Easy switching of mirror facets | yes | yes | more generally: easy maintenance|<br /> <br /> ==== Système de suivi (Moteurs, Programme, Capteurs) ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Real time accurate tracking of the sun motion | yes | yes | Plan a failsoft mode in case of a failure of the tracking system<br /> |Motorisation of mirrors | yes | yes | |<br /> |Electricity consumption | - | Minimum achievable | Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)|<br /> |Number of engines | Minimum | One per module or one for all the system | To be validated regarding the other technical choices (structure)|<br /> |Sun tracking to get the right angle | yes | yes, with necessary accuracy | Goal: send all the beams of each mirror on the width of the recptor (CPC width)|<br /> |Sensors (weather condition detection) | - | yes | * ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))|<br /> |Fluid temperature and pressure measurements | yes | drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use|<br /> |System automatic shutdown | Optional | Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)|<br /> |Simple controlling panel | yes | Programming expert mode when needed, but simple to use| ideas: remote access ? consultation des informations de fonctionnement (et historique ?)To be scheduled|<br /> <br /> ===7) Receiver unit (absorber)===<br /> [[http://forum.osefrance.org/viewforum.php?f=11|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Specific design for the working fluid, natural or forced circulation | 100% | yes | |<br /> |Selective material: High absorption qualities through all the solar spectrum : 100% , Absorbance 90%, infrared emissivity 15% : material intrinsically absorbant (or absorptive coating) | = high absorbance through all the solar spectrum and low infrared emissivity|<br /> |High thermal exchange between absorber and fluid | 60% | yes | material and conduction-convection in the fluid|<br /> |The system should be thermally insulated (with respect to ambiant air, infrared radiation) | 60% | yes | see requirement for the overall thermal efficiency (insulation material above and glass below)|<br /> |Good resistance to temperature variation (material expansion, tightness) | 60% | yes | In particular, risks related to high temperatures and pressure of fluid|<br /> <br /> Ideas: <br /> * modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) <br /> * In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===Usage===<br /> <br /> Requirements to be better defined with user<br /> <br /> Functioning<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Position: avoid building shadow and other masks | - |?|<br /> |Running range | - | ? | *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude|<br /> |Temperature level | - | ? | Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C|<br /> <br /> ==Hydraulic circuit==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Pressure losses | - | Minimum | Limit pressure losses, above all for light fluids : air, steam|<br /> |Open/closed circuit | - | ?| |<br /> |Mineral scale risks | - | ? | Gives good reason to run in a closed circuit...|<br /> |Fluid | - | ?| |<br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143587 2016-08-28T21:29:35Z

<p>Andrea: /* General */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> In France, We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August 2016: Design, final Functional requirements<br /> September 2016: BOM + Models<br /> Octobre/Novembre 2016: Workshop<br /> December-March 2017: Testing <br /> March 2017 : on production<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ==== Design requirements ====<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> L'historique des discussions entre contributeurs est accessible par les liens respectifs vers le forum :<br /> * Structure forum [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> * Concentrator optic forum [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> * Engines, Program, Captors forum [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> * Absorber forum [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ==== General====<br /> <br /> {| class=&quot;wikitable&quot;<br /> | Requirement <br /> | Demonstrator <br /> | Prototype <br /> | Comments for protototype<br /> |-<br /> | Reduce risks <br /> | Pay attention to parasitic reflexions <br /> | * optical risks ; * risks related to high pressure and high temperature hydraulic circuit<br /> |-<br /> |Cost (material, production, manufacturing, assembling) <br /> | Minimum <br /> | Minimum: &lt;300€/m² <br /> | Savings possible with respect to demonstrator but not yet optimized<br /> |}<br /> <br /> === Concentrator optic===<br /> [[http://forum.osefrance.org/viewforum.php?f=10|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Optical efficiency | Reflectivity (at normal angle) 0.9 | 60-70% | To fienetune: relevant/optimized geometry, cf cf [[http://forum.osefrance.org/viewtopic.php?f=9&amp;t=2920#p3353|discussion/forum]] ; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime|<br /> |Robustness and lifetime | no requirement | 3 to 5 years | To be studied : * time? * warranty? * what efficiency loss? * renewal point, maintenance frequency. * economic balance? * also to be written in other sections : structure, optic. *to define: expensive elements, frame elements last longer: 20 years or more|<br /> |Accesibility for cleaning and maintenance | no requirement | yes | *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted|<br /> |Thermal efficiency of the receptor | secondary concentration on the receptor &gt; 1.5 | 70-80% efficiency as a goal||<br /> |Total concentration factor | between 15 and 30 | between 15 and 30 | With 20 mirrors, it reaches about 15|<br /> |Secondary reflector (CPC) : design coordinated with absorber | 60% | yes| |<br /> <br /> <br /> === Structure===<br /> [[http://forum.osefrance.org/viewforum.php?f=9|lien forum]] <br /> <br /> <br /> ==Frame of mirrors set and receptor==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Independant structure: mirror, receptor | yes | No | Fixed relative position, to be set in accordance with latitude|<br /> |Resistance to ambiant environment | yes, punctually |yes, permanently | wind speed, hail, rain, snow, dust|<br /> |Sufficient stiffness against vibrations and deformation | yes | yes | |<br /> |Ground fixing | Adjustable feet | Fixed | Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...|<br /> |Assembling easiness | yes | yes | kit possible|<br /> |Transport easiness | yes | no|<br /> |Welding | the least possible | Ok | No requirement initially, compromise between : building complexity and assembling easiness|<br /> |Limitation of accident risks | yes | yes | at all stages : manufacturing, assembling |<br /> <br /> == Structure of mirrors facets==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Fresnel mirror: area| 2x2 m$^2$ with 20 facets 10 cm wide|defined by the power need (5KW )||<br /> |Mirror deformation limitation | deflection lower than 5 mm | 0.1° facet orientation, respectively 1cm on the receptor | (a priori) depends on receptor height, valid for 1.5m height|<br /> |Sun tracking (east west) | &gt;120° respectively 8h tracking | 12h tracking | respective rotation of 90° in 12h|<br /> |Bad weather protection | yes | yes | for instance: 180° range (mirrors down)|<br /> |Optical alignment possible through a tuning needless of special tools | yes | yes|Better: procedure to be updated for calibration|<br /> |Easy switching of mirror facets | yes | yes | more generally: easy maintenance|<br /> <br /> ==== Système de suivi (Moteurs, Programme, Capteurs) ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Real time accurate tracking of the sun motion | yes | yes | Plan a failsoft mode in case of a failure of the tracking system<br /> |Motorisation of mirrors | yes | yes | |<br /> |Electricity consumption | - | Minimum achievable | Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)|<br /> |Number of engines | Minimum | One per module or one for all the system | To be validated regarding the other technical choices (structure)|<br /> |Sun tracking to get the right angle | yes | yes, with necessary accuracy | Goal: send all the beams of each mirror on the width of the recptor (CPC width)|<br /> |Sensors (weather condition detection) | - | yes | * ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))|<br /> |Fluid temperature and pressure measurements | yes | drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use|<br /> |System automatic shutdown | Optional | Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)|<br /> |Simple controlling panel | yes | Programming expert mode when needed, but simple to use| ideas: remote access ? consultation des informations de fonctionnement (et historique ?)To be scheduled|<br /> <br /> ===7) Receiver unit (absorber)===<br /> [[http://forum.osefrance.org/viewforum.php?f=11|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Specific design for the working fluid, natural or forced circulation | 100% | yes | |<br /> |Selective material: High absorption qualities through all the solar spectrum : 100% , Absorbance 90%, infrared emissivity 15% : material intrinsically absorbant (or absorptive coating) | = high absorbance through all the solar spectrum and low infrared emissivity|<br /> |High thermal exchange between absorber and fluid | 60% | yes | material and conduction-convection in the fluid|<br /> |The system should be thermally insulated (with respect to ambiant air, infrared radiation) | 60% | yes | see requirement for the overall thermal efficiency (insulation material above and glass below)|<br /> |Good resistance to temperature variation (material expansion, tightness) | 60% | yes | In particular, risks related to high temperatures and pressure of fluid|<br /> <br /> Ideas: <br /> * modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) <br /> * In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===Usage===<br /> <br /> Requirements to be better defined with user<br /> <br /> Functioning<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Position: avoid building shadow and other masks | - |?|<br /> |Running range | - | ? | *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude|<br /> |Temperature level | - | ? | Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C|<br /> <br /> ==Hydraulic circuit==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Pressure losses | - | Minimum | Limit pressure losses, above all for light fluids : air, steam|<br /> |Open/closed circuit | - | ?| |<br /> |Mineral scale risks | - | ? | Gives good reason to run in a closed circuit...|<br /> |Fluid | - | ?| |<br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143586 2016-08-28T21:27:47Z

<p>Andrea: </p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> In France, We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August 2016: Design, final Functional requirements<br /> September 2016: BOM + Models<br /> Octobre/Novembre 2016: Workshop<br /> December-March 2017: Testing <br /> March 2017 : on production<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ==== Design requirements ====<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> L'historique des discussions entre contributeurs est accessible par les liens respectifs vers le forum :<br /> * Structure forum [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> * Concentrator optic forum [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> * Engines, Program, Captors forum [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> * Absorber forum [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ==== General====<br /> <br /> {| class=&quot;wikitable&quot;<br /> |Requirement | Demonstrator | Prototype | Comments for protototype|-<br /> |Reduce risks | Pay attention to parasitic reflexions | * optical risks ; * risks related to high pressure and high temperature hydraulic circuit|-<br /> |Cost (material, production, manufacturing, assembling) | Minimum | Minimum: &lt;300€/m² | Savings possible with respect to demonstrator but not yet optimized|}<br /> <br /> <br /> <br /> === Concentrator optic===<br /> [[http://forum.osefrance.org/viewforum.php?f=10|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Optical efficiency | Reflectivity (at normal angle) 0.9 | 60-70% | To fienetune: relevant/optimized geometry, cf cf [[http://forum.osefrance.org/viewtopic.php?f=9&amp;t=2920#p3353|discussion/forum]] ; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime|<br /> |Robustness and lifetime | no requirement | 3 to 5 years | To be studied : * time? * warranty? * what efficiency loss? * renewal point, maintenance frequency. * economic balance? * also to be written in other sections : structure, optic. *to define: expensive elements, frame elements last longer: 20 years or more|<br /> |Accesibility for cleaning and maintenance | no requirement | yes | *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted|<br /> |Thermal efficiency of the receptor | secondary concentration on the receptor &gt; 1.5 | 70-80% efficiency as a goal||<br /> |Total concentration factor | between 15 and 30 | between 15 and 30 | With 20 mirrors, it reaches about 15|<br /> |Secondary reflector (CPC) : design coordinated with absorber | 60% | yes| |<br /> <br /> <br /> === Structure===<br /> [[http://forum.osefrance.org/viewforum.php?f=9|lien forum]] <br /> <br /> <br /> ==Frame of mirrors set and receptor==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Independant structure: mirror, receptor | yes | No | Fixed relative position, to be set in accordance with latitude|<br /> |Resistance to ambiant environment | yes, punctually |yes, permanently | wind speed, hail, rain, snow, dust|<br /> |Sufficient stiffness against vibrations and deformation | yes | yes | |<br /> |Ground fixing | Adjustable feet | Fixed | Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...|<br /> |Assembling easiness | yes | yes | kit possible|<br /> |Transport easiness | yes | no|<br /> |Welding | the least possible | Ok | No requirement initially, compromise between : building complexity and assembling easiness|<br /> |Limitation of accident risks | yes | yes | at all stages : manufacturing, assembling |<br /> <br /> == Structure of mirrors facets==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Fresnel mirror: area| 2x2 m$^2$ with 20 facets 10 cm wide|defined by the power need (5KW )||<br /> |Mirror deformation limitation | deflection lower than 5 mm | 0.1° facet orientation, respectively 1cm on the receptor | (a priori) depends on receptor height, valid for 1.5m height|<br /> |Sun tracking (east west) | &gt;120° respectively 8h tracking | 12h tracking | respective rotation of 90° in 12h|<br /> |Bad weather protection | yes | yes | for instance: 180° range (mirrors down)|<br /> |Optical alignment possible through a tuning needless of special tools | yes | yes|Better: procedure to be updated for calibration|<br /> |Easy switching of mirror facets | yes | yes | more generally: easy maintenance|<br /> <br /> ==== Système de suivi (Moteurs, Programme, Capteurs) ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Real time accurate tracking of the sun motion | yes | yes | Plan a failsoft mode in case of a failure of the tracking system<br /> |Motorisation of mirrors | yes | yes | |<br /> |Electricity consumption | - | Minimum achievable | Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)|<br /> |Number of engines | Minimum | One per module or one for all the system | To be validated regarding the other technical choices (structure)|<br /> |Sun tracking to get the right angle | yes | yes, with necessary accuracy | Goal: send all the beams of each mirror on the width of the recptor (CPC width)|<br /> |Sensors (weather condition detection) | - | yes | * ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))|<br /> |Fluid temperature and pressure measurements | yes | drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use|<br /> |System automatic shutdown | Optional | Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)|<br /> |Simple controlling panel | yes | Programming expert mode when needed, but simple to use| ideas: remote access ? consultation des informations de fonctionnement (et historique ?)To be scheduled|<br /> <br /> ===7) Receiver unit (absorber)===<br /> [[http://forum.osefrance.org/viewforum.php?f=11|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Specific design for the working fluid, natural or forced circulation | 100% | yes | |<br /> |Selective material: High absorption qualities through all the solar spectrum : 100% , Absorbance 90%, infrared emissivity 15% : material intrinsically absorbant (or absorptive coating) | = high absorbance through all the solar spectrum and low infrared emissivity|<br /> |High thermal exchange between absorber and fluid | 60% | yes | material and conduction-convection in the fluid|<br /> |The system should be thermally insulated (with respect to ambiant air, infrared radiation) | 60% | yes | see requirement for the overall thermal efficiency (insulation material above and glass below)|<br /> |Good resistance to temperature variation (material expansion, tightness) | 60% | yes | In particular, risks related to high temperatures and pressure of fluid|<br /> <br /> Ideas: <br /> * modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) <br /> * In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===Usage===<br /> <br /> Requirements to be better defined with user<br /> <br /> Functioning<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Position: avoid building shadow and other masks | - |?|<br /> |Running range | - | ? | *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude|<br /> |Temperature level | - | ? | Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C|<br /> <br /> ==Hydraulic circuit==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Pressure losses | - | Minimum | Limit pressure losses, above all for light fluids : air, steam|<br /> |Open/closed circuit | - | ?| |<br /> |Mineral scale risks | - | ? | Gives good reason to run in a closed circuit...|<br /> |Fluid | - | ?| |<br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143585 2016-08-28T21:21:26Z

<p>Andrea: /* 6) tracking system (engines, program, sensors) */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> In France, We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August 2016: Design, final Functional requirements<br /> September 2016: BOM + Models<br /> Octobre/Novembre 2016: Workshop<br /> December-March 2017: Testing <br /> March 2017 : on production<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ==== Design requirements ====<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> L'historique des discussions entre contributeurs est accessible par les liens respectifs vers le forum :<br /> * Structure forum [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> * Concentrator optic forum [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> * Engines, Program, Captors forum [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> * Absorber forum [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ==== General====<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Reduce risks | Pay attention to parasitic reflexions | * optical risks ; * risks related to high pressure and high temperature hydraulic circuit|<br /> |Cost (material, production, manufacturing, assembling) | Minimum | Minimum: &lt;300€/m² | Savings possible with respect to demonstrator but not yet optimized|<br /> <br /> <br /> <br /> ===3) Concentrator optic===<br /> [[http://forum.osefrance.org/viewforum.php?f=10|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Optical efficiency | Reflectivity (at normal angle) 0.9 | 60-70% | To fienetune: relevant/optimized geometry, cf cf [[http://forum.osefrance.org/viewtopic.php?f=9&amp;t=2920#p3353|discussion/forum]] ; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime|<br /> |Robustness and lifetime | no requirement | 3 to 5 years | To be studied : * time? * warranty? * what efficiency loss? * renewal point, maintenance frequency. * economic balance? * also to be written in other sections : structure, optic. *to define: expensive elements, frame elements last longer: 20 years or more|<br /> |Accesibility for cleaning and maintenance | no requirement | yes | *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted|<br /> |Thermal efficiency of the receptor | secondary concentration on the receptor &gt; 1.5 | 70-80% efficiency as a goal||<br /> |Total concentration factor | between 15 and 30 | between 15 and 30 | With 20 mirrors, it reaches about 15|<br /> |Secondary reflector (CPC) : design coordinated with absorber | 60% | yes| |<br /> <br /> <br /> === Structure===<br /> [[http://forum.osefrance.org/viewforum.php?f=9|lien forum]] <br /> <br /> <br /> ==Frame of mirrors set and receptor==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Independant structure: mirror, receptor | yes | No | Fixed relative position, to be set in accordance with latitude|<br /> |Resistance to ambiant environment | yes, punctually |yes, permanently | wind speed, hail, rain, snow, dust|<br /> |Sufficient stiffness against vibrations and deformation | yes | yes | |<br /> |Ground fixing | Adjustable feet | Fixed | Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...|<br /> |Assembling easiness | yes | yes | kit possible|<br /> |Transport easiness | yes | no|<br /> |Welding | the least possible | Ok | No requirement initially, compromise between : building complexity and assembling easiness|<br /> |Limitation of accident risks | yes | yes | at all stages : manufacturing, assembling |<br /> <br /> == Structure of mirrors facets==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Fresnel mirror: area| 2x2 m$^2$ with 20 facets 10 cm wide|defined by the power need (5KW )||<br /> |Mirror deformation limitation | deflection lower than 5 mm | 0.1° facet orientation, respectively 1cm on the receptor | (a priori) depends on receptor height, valid for 1.5m height|<br /> |Sun tracking (east west) | &gt;120° respectively 8h tracking | 12h tracking | respective rotation of 90° in 12h|<br /> |Bad weather protection | yes | yes | for instance: 180° range (mirrors down)|<br /> |Optical alignment possible through a tuning needless of special tools | yes | yes|Better: procedure to be updated for calibration|<br /> |Easy switching of mirror facets | yes | yes | more generally: easy maintenance|<br /> <br /> ==== Système de suivi (Moteurs, Programme, Capteurs) ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Real time accurate tracking of the sun motion | yes | yes | Plan a failsoft mode in case of a failure of the tracking system<br /> |Motorisation of mirrors | yes | yes | |<br /> |Electricity consumption | - | Minimum achievable | Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)|<br /> |Number of engines | Minimum | One per module or one for all the system | To be validated regarding the other technical choices (structure)|<br /> |Sun tracking to get the right angle | yes | yes, with necessary accuracy | Goal: send all the beams of each mirror on the width of the recptor (CPC width)|<br /> |Sensors (weather condition detection) | - | yes | * ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))|<br /> |Fluid temperature and pressure measurements | yes | drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use|<br /> |System automatic shutdown | Optional | Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)|<br /> |Simple controlling panel | yes | Programming expert mode when needed, but simple to use| ideas: remote access ? consultation des informations de fonctionnement (et historique ?)To be scheduled|<br /> <br /> ===7) Receiver unit (absorber)===<br /> [[http://forum.osefrance.org/viewforum.php?f=11|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Specific design for the working fluid, natural or forced circulation | 100% | yes | |<br /> |Selective material: High absorption qualities through all the solar spectrum : 100% , Absorbance 90%, infrared emissivity 15% : material intrinsically absorbant (or absorptive coating) | = high absorbance through all the solar spectrum and low infrared emissivity|<br /> |High thermal exchange between absorber and fluid | 60% | yes | material and conduction-convection in the fluid|<br /> |The system should be thermally insulated (with respect to ambiant air, infrared radiation) | 60% | yes | see requirement for the overall thermal efficiency (insulation material above and glass below)|<br /> |Good resistance to temperature variation (material expansion, tightness) | 60% | yes | In particular, risks related to high temperatures and pressure of fluid|<br /> <br /> Ideas: <br /> * modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) <br /> * In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===Usage===<br /> <br /> Requirements to be better defined with user<br /> <br /> Functioning<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Position: avoid building shadow and other masks | - |?|<br /> |Running range | - | ? | *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude|<br /> |Temperature level | - | ? | Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C|<br /> <br /> ==Hydraulic circuit==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Pressure losses | - | Minimum | Limit pressure losses, above all for light fluids : air, steam|<br /> |Open/closed circuit | - | ?| |<br /> |Mineral scale risks | - | ? | Gives good reason to run in a closed circuit...|<br /> |Fluid | - | ?| |<br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143584 2016-08-28T21:20:26Z

<p>Andrea: /* Functional Requirements of the Alphasole Prototype */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> In France, We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August 2016: Design, final Functional requirements<br /> September 2016: BOM + Models<br /> Octobre/Novembre 2016: Workshop<br /> December-March 2017: Testing <br /> March 2017 : on production<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ==== Design requirements ====<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> L'historique des discussions entre contributeurs est accessible par les liens respectifs vers le forum :<br /> * Structure forum [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> * Concentrator optic forum [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> * Engines, Program, Captors forum [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> * Absorber forum [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ==== General====<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Reduce risks | Pay attention to parasitic reflexions | * optical risks ; * risks related to high pressure and high temperature hydraulic circuit|<br /> |Cost (material, production, manufacturing, assembling) | Minimum | Minimum: &lt;300€/m² | Savings possible with respect to demonstrator but not yet optimized|<br /> <br /> <br /> <br /> ===3) Concentrator optic===<br /> [[http://forum.osefrance.org/viewforum.php?f=10|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Optical efficiency | Reflectivity (at normal angle) 0.9 | 60-70% | To fienetune: relevant/optimized geometry, cf cf [[http://forum.osefrance.org/viewtopic.php?f=9&amp;t=2920#p3353|discussion/forum]] ; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime|<br /> |Robustness and lifetime | no requirement | 3 to 5 years | To be studied : * time? * warranty? * what efficiency loss? * renewal point, maintenance frequency. * economic balance? * also to be written in other sections : structure, optic. *to define: expensive elements, frame elements last longer: 20 years or more|<br /> |Accesibility for cleaning and maintenance | no requirement | yes | *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted|<br /> |Thermal efficiency of the receptor | secondary concentration on the receptor &gt; 1.5 | 70-80% efficiency as a goal||<br /> |Total concentration factor | between 15 and 30 | between 15 and 30 | With 20 mirrors, it reaches about 15|<br /> |Secondary reflector (CPC) : design coordinated with absorber | 60% | yes| |<br /> <br /> <br /> === Structure===<br /> [[http://forum.osefrance.org/viewforum.php?f=9|lien forum]] <br /> <br /> <br /> ==Frame of mirrors set and receptor==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Independant structure: mirror, receptor | yes | No | Fixed relative position, to be set in accordance with latitude|<br /> |Resistance to ambiant environment | yes, punctually |yes, permanently | wind speed, hail, rain, snow, dust|<br /> |Sufficient stiffness against vibrations and deformation | yes | yes | |<br /> |Ground fixing | Adjustable feet | Fixed | Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...|<br /> |Assembling easiness | yes | yes | kit possible|<br /> |Transport easiness | yes | no|<br /> |Welding | the least possible | Ok | No requirement initially, compromise between : building complexity and assembling easiness|<br /> |Limitation of accident risks | yes | yes | at all stages : manufacturing, assembling |<br /> <br /> == Structure of mirrors facets==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Fresnel mirror: area| 2x2 m$^2$ with 20 facets 10 cm wide|defined by the power need (5KW )||<br /> |Mirror deformation limitation | deflection lower than 5 mm | 0.1° facet orientation, respectively 1cm on the receptor | (a priori) depends on receptor height, valid for 1.5m height|<br /> |Sun tracking (east west) | &gt;120° respectively 8h tracking | 12h tracking | respective rotation of 90° in 12h|<br /> |Bad weather protection | yes | yes | for instance: 180° range (mirrors down)|<br /> |Optical alignment possible through a tuning needless of special tools | yes | yes|Better: procedure to be updated for calibration|<br /> |Easy switching of mirror facets | yes | yes | more generally: easy maintenance|<br /> <br /> ==== Système de suivi (Moteurs, Programme, Capteurs) ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Real time accurate tracking of the sun motion | yes | yes | Plan a failsoft mode in case of a failure of the tracking system<br /> |Motorisation of mirrors | yes | yes | |<br /> |Electricity consumption | - | Minimum achievable | Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)|<br /> |Number of engines | Minimum | One per module or one for all the system | To be validated regarding the other technical choices (structure)|<br /> |Sun tracking to get the right angle | yes | yes, with necessary accuracy | Goal: send all the beams of each mirror on the width of the recptor (CPC width)|<br /> |Sensors (weather condition detection) | - | yes | * ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))|<br /> |Fluid temperature and pressure measurements | yes | drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use|<br /> |System automatic shutdown | Optional | Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)|<br /> |Simple controlling panel | yes | Programming expert mode when needed, but simple to use| ideas: remote access ? consultation des informations de fonctionnement (et historique ?)To be scheduled|<br /> <br /> |===7) Receiver unit (absorber)===<br /> [[http://forum.osefrance.org/viewforum.php?f=11|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Specific design for the working fluid, natural or forced circulation | 100% | yes | |<br /> |Selective material: High absorption qualities through all the solar spectrum : 100% , Absorbance 90%, infrared emissivity 15% : material intrinsically absorbant (or absorptive coating) | = high absorbance through all the solar spectrum and low infrared emissivity|<br /> |High thermal exchange between absorber and fluid | 60% | yes | material and conduction-convection in the fluid|<br /> |The system should be thermally insulated (with respect to ambiant air, infrared radiation) | 60% | yes | see requirement for the overall thermal efficiency (insulation material above and glass below)|<br /> |Good resistance to temperature variation (material expansion, tightness) | 60% | yes | In particular, risks related to high temperatures and pressure of fluid|<br /> <br /> Ideas: <br /> * modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) <br /> * In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> <br /> ===Usage===<br /> <br /> Requirements to be better defined with user<br /> <br /> Functioning<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Position: avoid building shadow and other masks | - |?|<br /> |Running range | - | ? | *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude|<br /> |Temperature level | - | ? | Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C|<br /> <br /> ==Hydraulic circuit==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Pressure losses | - | Minimum | Limit pressure losses, above all for light fluids : air, steam|<br /> |Open/closed circuit | - | ?| |<br /> |Mineral scale risks | - | ? | Gives good reason to run in a closed circuit...|<br /> |Fluid | - | ?| |<br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143583 2016-08-28T21:20:02Z

<p>Andrea: </p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> In France, We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August 2016: Design, final Functional requirements<br /> September 2016: BOM + Models<br /> Octobre/Novembre 2016: Workshop<br /> December-March 2017: Testing <br /> March 2017 : on production<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ====Functional Requirements of the Alphasole Prototype====<br /> <br /> French version [[wiki:cahier_des_charges_2016|here]]<br /> <br /> Spanish version [[wiki:AlphaSoleTechRequirements-SP|here]]<br /> <br /> <br /> ==== Design requirements ====<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> L'historique des discussions entre contributeurs est accessible par les liens respectifs vers le forum :<br /> * Structure forum [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> * Concentrator optic forum [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> * Engines, Program, Captors forum [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> * Absorber forum [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ==== General====<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Reduce risks | Pay attention to parasitic reflexions | * optical risks ; * risks related to high pressure and high temperature hydraulic circuit|<br /> |Cost (material, production, manufacturing, assembling) | Minimum | Minimum: &lt;300€/m² | Savings possible with respect to demonstrator but not yet optimized|<br /> <br /> <br /> <br /> ===3) Concentrator optic===<br /> [[http://forum.osefrance.org/viewforum.php?f=10|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Optical efficiency | Reflectivity (at normal angle) 0.9 | 60-70% | To fienetune: relevant/optimized geometry, cf cf [[http://forum.osefrance.org/viewtopic.php?f=9&amp;t=2920#p3353|discussion/forum]] ; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime|<br /> |Robustness and lifetime | no requirement | 3 to 5 years | To be studied : * time? * warranty? * what efficiency loss? * renewal point, maintenance frequency. * economic balance? * also to be written in other sections : structure, optic. *to define: expensive elements, frame elements last longer: 20 years or more|<br /> |Accesibility for cleaning and maintenance | no requirement | yes | *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted|<br /> |Thermal efficiency of the receptor | secondary concentration on the receptor &gt; 1.5 | 70-80% efficiency as a goal||<br /> |Total concentration factor | between 15 and 30 | between 15 and 30 | With 20 mirrors, it reaches about 15|<br /> |Secondary reflector (CPC) : design coordinated with absorber | 60% | yes| |<br /> <br /> <br /> === Structure===<br /> [[http://forum.osefrance.org/viewforum.php?f=9|lien forum]] <br /> <br /> <br /> ==Frame of mirrors set and receptor==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Independant structure: mirror, receptor | yes | No | Fixed relative position, to be set in accordance with latitude|<br /> |Resistance to ambiant environment | yes, punctually |yes, permanently | wind speed, hail, rain, snow, dust|<br /> |Sufficient stiffness against vibrations and deformation | yes | yes | |<br /> |Ground fixing | Adjustable feet | Fixed | Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...|<br /> |Assembling easiness | yes | yes | kit possible|<br /> |Transport easiness | yes | no|<br /> |Welding | the least possible | Ok | No requirement initially, compromise between : building complexity and assembling easiness|<br /> |Limitation of accident risks | yes | yes | at all stages : manufacturing, assembling |<br /> <br /> == Structure of mirrors facets==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Fresnel mirror: area| 2x2 m$^2$ with 20 facets 10 cm wide|defined by the power need (5KW )||<br /> |Mirror deformation limitation | deflection lower than 5 mm | 0.1° facet orientation, respectively 1cm on the receptor | (a priori) depends on receptor height, valid for 1.5m height|<br /> |Sun tracking (east west) | &gt;120° respectively 8h tracking | 12h tracking | respective rotation of 90° in 12h|<br /> |Bad weather protection | yes | yes | for instance: 180° range (mirrors down)|<br /> |Optical alignment possible through a tuning needless of special tools | yes | yes|Better: procedure to be updated for calibration|<br /> |Easy switching of mirror facets | yes | yes | more generally: easy maintenance|<br /> <br /> ==== Système de suivi (Moteurs, Programme, Capteurs) ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> [[http://forum.osefrance.org/viewforum.php?f=12|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Real time accurate tracking of the sun motion | yes | yes | Plan a failsoft mode in case of a failure of the tracking system<br /> |Motorisation of mirrors | yes | yes | |<br /> |Electricity consumption | - | Minimum achievable | Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)|<br /> |Number of engines | Minimum | One per module or one for all the system | To be validated regarding the other technical choices (structure)|<br /> |Sun tracking to get the right angle | yes | yes, with necessary accuracy | Goal: send all the beams of each mirror on the width of the recptor (CPC width)|<br /> |Sensors (weather condition detection) | - | yes | * ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))|<br /> |Fluid temperature and pressure measurements | yes | drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use|<br /> |System automatic shutdown | Optional | Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)|<br /> |Simple controlling panel | yes | Programming expert mode when needed, but simple to use| ideas: remote access ? consultation des informations de fonctionnement (et historique ?)To be scheduled|<br /> <br /> |===7) Receiver unit (absorber)===<br /> [[http://forum.osefrance.org/viewforum.php?f=11|lien forum]] <br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Specific design for the working fluid, natural or forced circulation | 100% | yes | |<br /> |Selective material: High absorption qualities through all the solar spectrum : 100% , Absorbance 90%, infrared emissivity 15% : material intrinsically absorbant (or absorptive coating) | = high absorbance through all the solar spectrum and low infrared emissivity|<br /> |High thermal exchange between absorber and fluid | 60% | yes | material and conduction-convection in the fluid|<br /> |The system should be thermally insulated (with respect to ambiant air, infrared radiation) | 60% | yes | see requirement for the overall thermal efficiency (insulation material above and glass below)|<br /> |Good resistance to temperature variation (material expansion, tightness) | 60% | yes | In particular, risks related to high temperatures and pressure of fluid|<br /> <br /> Ideas: <br /> * modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) <br /> * In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> <br /> ===Usage===<br /> <br /> Requirements to be better defined with user<br /> <br /> Functioning<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Position: avoid building shadow and other masks | - |?|<br /> |Running range | - | ? | *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude|<br /> |Temperature level | - | ? | Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C|<br /> <br /> ==Hydraulic circuit==<br /> <br /> ^Requirement ^ Demonstrator ^ Prototype ^ Comments for protototype^<br /> |Pressure losses | - | Minimum | Limit pressure losses, above all for light fluids : air, steam|<br /> |Open/closed circuit | - | ?| |<br /> |Mineral scale risks | - | ? | Gives good reason to run in a closed circuit...|<br /> |Fluid | - | ?| |<br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Andrea_Log&diff=143582 2016-08-28T19:55:14Z

<p>Andrea: </p> <hr /> <div>Hi I am starting my logbook also maintained [http://wiki.osefrance.org/doku.php?id=andrea_journal here] in French<br /> <br /> === Week 28 August 2016 ===<br /> working on [[http://forum.osefrance.org/viewtopic.php?f=31&amp;t=3015 infrastructure OSE2.0]]<br /> installed and tested [[http://wiki.ose.la mediawiki]] on OSE2.0 infrastructure. doc of [[http://wiki.ose.la/index.php?title=How_to_create_a_CTin_OSE_2.0&amp;oldid=24 how to install a Container]] on OSE 2.0. Test messaging system [[https://odoo.ose.la Odoo]] (also on android). Installed murmur (mumble server). installed Container to host rocketchat (hangout replacement, open source). updated template pour [[http://www.opensourceecologie.org/?page_id=884 Dashboard]]. published les tech requirement en [[http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en EN]] et [[http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp SP]] et sur [[http://opensourceecology.org/wiki/Solar_Concentrator/Research_Development OSE US Wiki]] and [http://cloud.osefrance.org/public.php?service=files&amp;t=d738a3aa778cb112a6592d36a199c5d5 timeline]</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Andrea_Log&diff=143581 2016-08-28T19:54:43Z

<p>Andrea: </p> <hr /> <div>Hi I am starting my logbook also maintained [http://wiki.osefrance.org/doku.php?id=andrea_journal here] in French<br /> <br /> === Week 28 August 2016 ===<br /> working on [[http://forum.osefrance.org/viewtopic.php?f=31&amp;t=3015 infrastructure OSE2.0]]<br /> installed and tested [[http://wiki.ose.la mediawiki]] on OSE2.0 infrastructure. doc of [[http://wiki.ose.la/index.php?title=How_to_create_a_CTin_OSE_2.0&amp;oldid=24 how to install a Container]] on OSE 2.0. Test messaging system [[https://odoo.ose.la Odoo]] (also on android). Installed murmur (mumble server). installed Container to host rocketchat (hangout replacement, open source). updated template pour [[http://www.opensourceecologie.org/?page_id=884 Dashboard]]. published les tech requirement en [[http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en|EN]] et [[http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp|SP]] et sur [[http://opensourceecology.org/wiki/Solar_Concentrator/Research_Development|OSE US Wiki]] and [http://cloud.osefrance.org/public.php?service=files&amp;t=d738a3aa778cb112a6592d36a199c5d5 timeline]</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143577 2016-08-28T19:25:37Z

<p>Andrea: /* Open Source Ecology driven projects */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> In France, We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August 2016: Design, final Functional requirements<br /> September 2016: BOM + Models<br /> Octobre/Novembre 2016: Workshop<br /> December-March 2017: Testing <br /> March 2017 : on production<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ===1) Design requirements===<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> Structure forum link [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> Concentrator optic forum link [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> Engines, Program, Captors forum link [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> Absorber forum link [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ===2) General===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Reduce risks // Pay a particular attention to parasitic reflexions // *optical risks; *risks related to high pressure and high temperature hydraulic circuit<br /> <br /> Cost (material, production, manufacturing, assembling) // Minimum // Minimum&lt;300€/m² // Savings possible with respect to demonstrator<br /> <br /> ===3) Concentrator optic===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Optical efficiency // Reflectivity (at normal angle) 0.9 // 60-70% // To be set more precisely: relevant/optimized geometry, cf forum discussion; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime<br /> <br /> Robustness and lifetime // no requirement // 3 to 5 years // To be studied : *time? warranty? how much efficiency loss? renewal point, maintenance frequency... *economic balance? *also to be written in other sections : structure, optic... *set more precisely: expensive elements, frame elements last longer: 20 years or more<br /> <br /> Accesibility for cleaning and maintenance // no requirement // yes // *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted<br /> <br /> Thermal efficiency of the receptor // secondary concentration on the receptor &gt; 1.5 // 70-80% efficiency as a goal<br /> <br /> Total concentration factor // between 15 and 30 // between 15 and 30 // With 20 mirrors, it reaches about 15<br /> <br /> Secondary reflector (CPC) : design coordinated with absorber // 60% // yes<br /> <br /> ***********************<br /> <br /> ===4) Structure===<br /> <br /> Frame of the mirrors set and receptor<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Independant structure: mirror, receptor // yes // No // Fixed relative position, to be set in accordance with latitude<br /> <br /> Resistance to ambiant environment // yes, punctually //yes, permanently // wind speed, hail, rain, snow, dust<br /> <br /> Sufficient stiffness against vibrations and deformation // yes // yes // ?<br /> <br /> Ground fixing // Adjustable feet // Fixed // Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...<br /> <br /> Assembling easiness // yes // yes // kit possible<br /> <br /> Transport easiness // yes // no<br /> <br /> Welding // the less achievable // Ok // No requirement initially, compromise between : building complexity and assembling easiness<br /> <br /> Limitation of accident risks // yes // yes // at all stages : manufacturing, assembling...<br /> <br /> <br /> ===5) structure of mirrors facets===<br /> <br /> Fresnel mirror: area 2x2 m² with 20 facets 10 cm wide<br /> for use, the requirement regarding the power is to be linked with the area<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Mirror deformation limitation // deflection lower than 5 mm // 0.1° facet orientation, respectively 1cm on the receptor // (a priori) depends on receptor height, valid for 1.5m height<br /> <br /> Sun tracking (east west) // &gt;120° respectively 8h tracking // 12h tracking // ?respectively rotation of 90° in 12h<br /> <br /> Bad weather protection // yes // yes // for instance: 180° range (mirrors down)<br /> <br /> Optical alignment possible through a tuning needless of special tools // yes // yes<br /> <br /> <br /> Better: procedure to be updated for calibration<br /> <br /> Easy switching of mirror facets // yes // yes // more generally: easy maintenance<br /> <br /> *****************************<br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Real time accurate tracking of the sun motion // yes // yes // Plan a failsoft mode in case of a failure of the tracking system<br /> <br /> Motorisation of mirrors // yes // yes<br /> <br /> Electricity consumption // - // Minimum achievable // Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)<br /> <br /> Number of engines // Minimum // One per module or one for all the system // To be validated regarding the other technical choices (structure)<br /> <br /> Sun tracking to get the right angle // yes // yes, with necessary accuracy // Goal: send all the beams of each mirror on the width of the recptor (CPC width)<br /> <br /> Sensors (weather condition detection) // yes // yes // *ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))<br /> <br /> Fluid temperature and pressure measurements // yes // drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use<br /> <br /> System automatic shutdown // Optional // Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)<br /> <br /> Simple controlling panel // yes // Programming expert mode when needed, but simple to use<br /> <br /> <br /> Ideas: remote access (ethernet)? Ease programming, viewing of operating information (and history?) =&gt; To be scheduled secondly. But Arduino ports shall be planned right now<br /> <br /> ===7) Receptor (absorber)===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Specific design for the working fluid, natural or forced circulation // 100% // yes<br /> <br /> Selective material // High absorption qualities through all the solar spectrum : 100% // Absorbance 90%, infrared emissivity 15% : material intrinsically absorptive (or absorptive coating) // = high absorbance through all the solar spectrum and low infrared emissivity<br /> <br /> High thermal exchange between absorber and fluid // 60% // yes // material and conduction-convection in the fluid<br /> <br /> The system should be thermally insulated (with respect to ambiant air, infrared radiation) // 60% // yes // see requirement for the overall thermal efficiency (insulation material above and glass below)<br /> <br /> Good resistance to temperature variation (material expansion, tightness) // 60% // yes // In particular, risks related to high temperatures and pressure of fluid<br /> <br /> <br /> Ideas: *modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) **In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===8) Use===<br /> <br /> Requirements to be defined with user<br /> <br /> Running<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Position: avoid building shadow and other masks // - // ?<br /> <br /> Running range // - // ? // *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude<br /> <br /> Temperature level // - // ? // Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C<br /> <br /> <br /> ===Hydraulic circuit===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Pressure losses // - // Minimum // Limit pressure losses, above all for light fluids : air, steam<br /> <br /> Open/closed circuit // - // ?<br /> <br /> Mineral scale risks // - // ? // Gives good reason to run in a closed circuit...<br /> <br /> ===Fluid // - // ?===<br /> <br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Andrea_Log&diff=143574 2016-08-28T18:03:14Z

<p>Andrea: </p> <hr /> <div>Hi I am starting my logbook also maintained [http://wiki.osefrance.org/doku.php?id=andrea_journal here] in French<br /> <br /> === Week 28 August 2016 ===<br /> working on [[http://forum.osefrance.org/viewtopic.php?f=31&amp;t=3015 infrastructure OSE2.0]]<br /> installed and tested [[http://wiki.ose.la mediawiki]] on OSE2.0 infrastructure. doc of [[http://wiki.ose.la/index.php?title=How_to_create_a_CTin_OSE_2.0&amp;oldid=24 how to install a Container]] on OSE 2.0. Test messaging system [[https://odoo.ose.la Odoo]] (also on android). Installed murmur (mumble server). installed Container to host rocketchat (hangout replacement, open source)</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Andrea_Log&diff=143573 2016-08-28T17:59:55Z

<p>Andrea: </p> <hr /> <div>Hi I am starting my logbook also maintained [http://wiki.osefrance.org/doku.php?id=andrea_journal here] in French<br /> <br /> === Week 28 August 2016 ===<br /> working on [[http://forum.osefrance.org/viewtopic.php?f=31&amp;t=3015|infrastructure OSE2.0]]<br /> installed and tested [[http://wiki.ose.la|mediawiki]] on OSE2.0 infrastructure. doc of [[http://wiki.ose.la/index.php?title=How_to_create_a_CTin_OSE_2.0&amp;oldid=24|how to install a Container]] on OSE 2.0. Test messaging system [[https://odoo.ose.la|Odoo]] (also on android). Installed murmur (mumble server). installed Container to host rocketchat (hangout replacement, open source)</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Andrea_Log&diff=143572 2016-08-28T17:32:20Z

<p>Andrea: </p> <hr /> <div>Hi I am starting my logbook also maintained [http://wiki.osefrance.org/doku.php?id=andrea_journal|here] in French<br /> <br /> === Week 28 August 2016 ===<br /> working on [[http://forum.osefrance.org/viewtopic.php?f=31&amp;t=3015|infrastructure OSE2.0]]<br /> installed and tested [[http://wiki.ose.la|mediawiki]] on OSE2.0 infrastructure. doc of [[http://wiki.ose.la/index.php?title=How_to_create_a_CTin_OSE_2.0&amp;oldid=24|how to install a Container]] on OSE 2.0. Test messaging system [[https://odoo.ose.la|Odoo]] (also on android). Installed murmur (mumble server). installed Container to host rocketchat (hangout replacement, open source)</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Logs&diff=143571 2016-08-28T17:27:16Z

<p>Andrea: /* Current Work Logs */</p> <hr /> <div>'''See explainer video from 2013 on how to start a [[Work Log]]''' <br /> <br /> =Project Logs=<br /> *[[Ultrasonic Sensor Log]]<br /> *[[Nut Breeding Log]]<br /> *[[3D Printer Log]]<br /> *[[CEB Press Log]]<br /> *[[Universal Rotor Log]]<br /> *[[Status Log]]<br /> *[[Development Log]]<br /> *[[Polylactic acid log]]<br /> *[[Design Sprint Log]]<br /> *[[OSPD Log]]<br /> *[[Agriculture Log]]<br /> *[[Dogs Log]]<br /> *[[Rabbitry Log]]<br /> *[[Aquaponic Greenhouse Log]]<br /> *[[Mushroom Log]]<br /> *[[Collaborative Literacy Log]]<br /> *[[Publicity Log]]<br /> *[[Pelletizer Log]]<br /> *[[Development Template Log]]<br /> *[[Wiki Log]]<br /> *[[MediaWiki Log]] <br /> *[[Enterprise Log]]<br /> *[[Team Building Log]]<br /> *[[Organizational Log]]<br /> *[[Admin Log]]<br /> *[[Graphics Team Log]]<br /> <br /> =Subproject Logs=<br /> *[[Tobbens_Adding_Inductive_Proximity_Sensor_Log]]<br /> <br /> =Current Work Logs=<br /> *[[Donney Log]]<br /> *[[Michel Log]]<br /> *[[Monica Log]]<br /> *[[Cody Log]]<br /> *[[2ben log]]<br /> *[[Joshua Log]]<br /> *[[Jonathan Log]]<br /> *[[Alec Log]]<br /> *[[Tobben Log]]<br /> *[[Marcin Log]]<br /> *[[Aidan Log]]<br /> *[[Ellena log]]<br /> *[[Edo Log]]<br /> *[[Curtis Log]]<br /> *[[Eric Log]]<br /> *[[Jim Log]]<br /> *[[Michael Hess Log]]<br /> *[[Victor Log]]<br /> *[[Arif Log]]<br /> *[[Moriah Log]]<br /> *[[Greg Log]]<br /> *[[Gabriel Kind log‎]]<br /> *[[Cris Log]]<br /> *[[Graham Coffman's log]]<br /> *[[Stephen_Log]]<br /> *[[Emily Log]]<br /> *[[Molly log]]<br /> *[[Danny K Log]]<br /> *[[Anthony_douglas_log]]<br /> *[[Chrisc log]]<br /> *[[Sam Kiyomi Log]]<br /> *[[Juan log]]<br /> *[[Jasonshah_log]]<br /> *[[Jeff Log]]<br /> *[[Brenna log]]<br /> *[[Clair Rose log]]<br /> *[[Catarina Log]]<br /> *[[Michael Pendergast Log]]<br /> *[[Guillaume Log]]<br /> *[[Charlie log]]<br /> *[[Will Log]]<br /> *[[Jose Antonio log]]<br /> *[[Max Log]]<br /> *[[Yann Log]]<br /> *[[Tom Log]]<br /> *[[Rob Beddingfield Log]]<br /> *[[Jean-Baptiste Log]]<br /> *[[Andrea Log]]<br /> <br /> =Spring breakers 2014=<br /> *[[Chrisc log]] <br /> *[[Colten Jackson Log]] <br /> *[[Anthony douglas log]] <br /> *[[Eric Potash Log]] <br /> *[[Wes Log]] <br /> *[[Laurynn log]] <br /> *[[Catwilmes log]] <br /> *[[Ben Lloyd Pearson Log]] <br /> *[[Michael Seffren Log]] <br /> *[[Andrew Graham Log]] <br /> *[[Kyle log]]<br /> <br /> =2013 Logs=<br /> *[[Samthetechie Log]]<br /> *[[Jordan Log]]<br /> *[[Scott Log]]<br /> *[[Lucas Log]]<br /> *[[Leandra Log]]<br /> *[[Cory Log]]<br /> *[[Justin Burnett Log]]<br /> *[[Chris Reinhart Log]]<br /> *[[Gary Log]]<br /> *[[Audrey Log]]<br /> *[[Lisa Log]]<br /> *[[Husam Log]]<br /> <br /> ==Other Logs==<br /> *[[Rob_Beddingfield_Log]]<br /> *[[Inverter Log]]<br /> *[[Universal Rotor Log]]<br /> *[[Accounting System Log]]<br /> <br /> ==Links==<br /> *[[Old Logs]]<br /> *[http://opensourceecology.org/wiki/Category:Logs Category:Logs]<br /> <br /> [[Category:Logs]]</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143567 2016-08-28T15:47:16Z

<p>Andrea: /* Planning */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August 2016: Design, final Functional requirements<br /> September 2016: BOM + Models<br /> Octobre/Novembre 2016: Workshop<br /> December-March 2017: Testing <br /> March 2017 : on production<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ===1) Design requirements===<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> Structure forum link [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> Concentrator optic forum link [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> Engines, Program, Captors forum link [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> Absorber forum link [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ===2) General===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Reduce risks // Pay a particular attention to parasitic reflexions // *optical risks; *risks related to high pressure and high temperature hydraulic circuit<br /> <br /> Cost (material, production, manufacturing, assembling) // Minimum // Minimum&lt;300€/m² // Savings possible with respect to demonstrator<br /> <br /> ===3) Concentrator optic===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Optical efficiency // Reflectivity (at normal angle) 0.9 // 60-70% // To be set more precisely: relevant/optimized geometry, cf forum discussion; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime<br /> <br /> Robustness and lifetime // no requirement // 3 to 5 years // To be studied : *time? warranty? how much efficiency loss? renewal point, maintenance frequency... *economic balance? *also to be written in other sections : structure, optic... *set more precisely: expensive elements, frame elements last longer: 20 years or more<br /> <br /> Accesibility for cleaning and maintenance // no requirement // yes // *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted<br /> <br /> Thermal efficiency of the receptor // secondary concentration on the receptor &gt; 1.5 // 70-80% efficiency as a goal<br /> <br /> Total concentration factor // between 15 and 30 // between 15 and 30 // With 20 mirrors, it reaches about 15<br /> <br /> Secondary reflector (CPC) : design coordinated with absorber // 60% // yes<br /> <br /> ***********************<br /> <br /> ===4) Structure===<br /> <br /> Frame of the mirrors set and receptor<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Independant structure: mirror, receptor // yes // No // Fixed relative position, to be set in accordance with latitude<br /> <br /> Resistance to ambiant environment // yes, punctually //yes, permanently // wind speed, hail, rain, snow, dust<br /> <br /> Sufficient stiffness against vibrations and deformation // yes // yes // ?<br /> <br /> Ground fixing // Adjustable feet // Fixed // Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...<br /> <br /> Assembling easiness // yes // yes // kit possible<br /> <br /> Transport easiness // yes // no<br /> <br /> Welding // the less achievable // Ok // No requirement initially, compromise between : building complexity and assembling easiness<br /> <br /> Limitation of accident risks // yes // yes // at all stages : manufacturing, assembling...<br /> <br /> <br /> ===5) structure of mirrors facets===<br /> <br /> Fresnel mirror: area 2x2 m² with 20 facets 10 cm wide<br /> for use, the requirement regarding the power is to be linked with the area<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Mirror deformation limitation // deflection lower than 5 mm // 0.1° facet orientation, respectively 1cm on the receptor // (a priori) depends on receptor height, valid for 1.5m height<br /> <br /> Sun tracking (east west) // &gt;120° respectively 8h tracking // 12h tracking // ?respectively rotation of 90° in 12h<br /> <br /> Bad weather protection // yes // yes // for instance: 180° range (mirrors down)<br /> <br /> Optical alignment possible through a tuning needless of special tools // yes // yes<br /> <br /> <br /> Better: procedure to be updated for calibration<br /> <br /> Easy switching of mirror facets // yes // yes // more generally: easy maintenance<br /> <br /> *****************************<br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Real time accurate tracking of the sun motion // yes // yes // Plan a failsoft mode in case of a failure of the tracking system<br /> <br /> Motorisation of mirrors // yes // yes<br /> <br /> Electricity consumption // - // Minimum achievable // Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)<br /> <br /> Number of engines // Minimum // One per module or one for all the system // To be validated regarding the other technical choices (structure)<br /> <br /> Sun tracking to get the right angle // yes // yes, with necessary accuracy // Goal: send all the beams of each mirror on the width of the recptor (CPC width)<br /> <br /> Sensors (weather condition detection) // yes // yes // *ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))<br /> <br /> Fluid temperature and pressure measurements // yes // drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use<br /> <br /> System automatic shutdown // Optional // Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)<br /> <br /> Simple controlling panel // yes // Programming expert mode when needed, but simple to use<br /> <br /> <br /> Ideas: remote access (ethernet)? Ease programming, viewing of operating information (and history?) =&gt; To be scheduled secondly. But Arduino ports shall be planned right now<br /> <br /> ===7) Receptor (absorber)===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Specific design for the working fluid, natural or forced circulation // 100% // yes<br /> <br /> Selective material // High absorption qualities through all the solar spectrum : 100% // Absorbance 90%, infrared emissivity 15% : material intrinsically absorptive (or absorptive coating) // = high absorbance through all the solar spectrum and low infrared emissivity<br /> <br /> High thermal exchange between absorber and fluid // 60% // yes // material and conduction-convection in the fluid<br /> <br /> The system should be thermally insulated (with respect to ambiant air, infrared radiation) // 60% // yes // see requirement for the overall thermal efficiency (insulation material above and glass below)<br /> <br /> Good resistance to temperature variation (material expansion, tightness) // 60% // yes // In particular, risks related to high temperatures and pressure of fluid<br /> <br /> <br /> Ideas: *modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) **In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===8) Use===<br /> <br /> Requirements to be defined with user<br /> <br /> Running<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Position: avoid building shadow and other masks // - // ?<br /> <br /> Running range // - // ? // *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude<br /> <br /> Temperature level // - // ? // Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C<br /> <br /> <br /> ===Hydraulic circuit===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Pressure losses // - // Minimum // Limit pressure losses, above all for light fluids : air, steam<br /> <br /> Open/closed circuit // - // ?<br /> <br /> Mineral scale risks // - // ? // Gives good reason to run in a closed circuit...<br /> <br /> ===Fluid // - // ?===<br /> <br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143501 2016-08-27T03:34:50Z

<p>Andrea: /* Functional requirements of Alphasole Prototype */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August: Design, final Functional requirements<br /> September: BOM + Models<br /> Octobre/Novembre: Workshop<br /> December-March : Testing <br /> March: on production<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-en here ]<br /> French version [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges_2016 here ]<br /> Spanish version [http://wiki.osefrance.org/doku.php?id=wiki:alphasoletechrequirements-sp here ]<br /> <br /> ===1) Design requirements===<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> Structure forum link [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> Concentrator optic forum link [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> Engines, Program, Captors forum link [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> Absorber forum link [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ===2) General===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Reduce risks // Pay a particular attention to parasitic reflexions // *optical risks; *risks related to high pressure and high temperature hydraulic circuit<br /> <br /> Cost (material, production, manufacturing, assembling) // Minimum // Minimum&lt;300€/m² // Savings possible with respect to demonstrator<br /> <br /> ===3) Concentrator optic===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Optical efficiency // Reflectivity (at normal angle) 0.9 // 60-70% // To be set more precisely: relevant/optimized geometry, cf forum discussion; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime<br /> <br /> Robustness and lifetime // no requirement // 3 to 5 years // To be studied : *time? warranty? how much efficiency loss? renewal point, maintenance frequency... *economic balance? *also to be written in other sections : structure, optic... *set more precisely: expensive elements, frame elements last longer: 20 years or more<br /> <br /> Accesibility for cleaning and maintenance // no requirement // yes // *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted<br /> <br /> Thermal efficiency of the receptor // secondary concentration on the receptor &gt; 1.5 // 70-80% efficiency as a goal<br /> <br /> Total concentration factor // between 15 and 30 // between 15 and 30 // With 20 mirrors, it reaches about 15<br /> <br /> Secondary reflector (CPC) : design coordinated with absorber // 60% // yes<br /> <br /> ***********************<br /> <br /> ===4) Structure===<br /> <br /> Frame of the mirrors set and receptor<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Independant structure: mirror, receptor // yes // No // Fixed relative position, to be set in accordance with latitude<br /> <br /> Resistance to ambiant environment // yes, punctually //yes, permanently // wind speed, hail, rain, snow, dust<br /> <br /> Sufficient stiffness against vibrations and deformation // yes // yes // ?<br /> <br /> Ground fixing // Adjustable feet // Fixed // Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...<br /> <br /> Assembling easiness // yes // yes // kit possible<br /> <br /> Transport easiness // yes // no<br /> <br /> Welding // the less achievable // Ok // No requirement initially, compromise between : building complexity and assembling easiness<br /> <br /> Limitation of accident risks // yes // yes // at all stages : manufacturing, assembling...<br /> <br /> <br /> ===5) structure of mirrors facets===<br /> <br /> Fresnel mirror: area 2x2 m² with 20 facets 10 cm wide<br /> for use, the requirement regarding the power is to be linked with the area<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Mirror deformation limitation // deflection lower than 5 mm // 0.1° facet orientation, respectively 1cm on the receptor // (a priori) depends on receptor height, valid for 1.5m height<br /> <br /> Sun tracking (east west) // &gt;120° respectively 8h tracking // 12h tracking // ?respectively rotation of 90° in 12h<br /> <br /> Bad weather protection // yes // yes // for instance: 180° range (mirrors down)<br /> <br /> Optical alignment possible through a tuning needless of special tools // yes // yes<br /> <br /> <br /> Better: procedure to be updated for calibration<br /> <br /> Easy switching of mirror facets // yes // yes // more generally: easy maintenance<br /> <br /> *****************************<br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Real time accurate tracking of the sun motion // yes // yes // Plan a failsoft mode in case of a failure of the tracking system<br /> <br /> Motorisation of mirrors // yes // yes<br /> <br /> Electricity consumption // - // Minimum achievable // Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)<br /> <br /> Number of engines // Minimum // One per module or one for all the system // To be validated regarding the other technical choices (structure)<br /> <br /> Sun tracking to get the right angle // yes // yes, with necessary accuracy // Goal: send all the beams of each mirror on the width of the recptor (CPC width)<br /> <br /> Sensors (weather condition detection) // yes // yes // *ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))<br /> <br /> Fluid temperature and pressure measurements // yes // drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use<br /> <br /> System automatic shutdown // Optional // Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)<br /> <br /> Simple controlling panel // yes // Programming expert mode when needed, but simple to use<br /> <br /> <br /> Ideas: remote access (ethernet)? Ease programming, viewing of operating information (and history?) =&gt; To be scheduled secondly. But Arduino ports shall be planned right now<br /> <br /> ===7) Receptor (absorber)===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Specific design for the working fluid, natural or forced circulation // 100% // yes<br /> <br /> Selective material // High absorption qualities through all the solar spectrum : 100% // Absorbance 90%, infrared emissivity 15% : material intrinsically absorptive (or absorptive coating) // = high absorbance through all the solar spectrum and low infrared emissivity<br /> <br /> High thermal exchange between absorber and fluid // 60% // yes // material and conduction-convection in the fluid<br /> <br /> The system should be thermally insulated (with respect to ambiant air, infrared radiation) // 60% // yes // see requirement for the overall thermal efficiency (insulation material above and glass below)<br /> <br /> Good resistance to temperature variation (material expansion, tightness) // 60% // yes // In particular, risks related to high temperatures and pressure of fluid<br /> <br /> <br /> Ideas: *modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) **In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===8) Use===<br /> <br /> Requirements to be defined with user<br /> <br /> Running<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Position: avoid building shadow and other masks // - // ?<br /> <br /> Running range // - // ? // *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude<br /> <br /> Temperature level // - // ? // Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C<br /> <br /> <br /> ===Hydraulic circuit===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Pressure losses // - // Minimum // Limit pressure losses, above all for light fluids : air, steam<br /> <br /> Open/closed circuit // - // ?<br /> <br /> Mineral scale risks // - // ? // Gives good reason to run in a closed circuit...<br /> <br /> ===Fluid // - // ?===<br /> <br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143495 2016-08-27T03:14:15Z

<p>Andrea: /* Demonstrator SolarOSE (proof of concept of 1KW peak power) : completed */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guide Open Hardware on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guide Open Hardware on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August: Design, final Functional requirements<br /> September: BOM + Models<br /> Octobre/Novembre: Workshop<br /> December-March : Testing <br /> March: on production<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [[wiki:AlphaSoleTechRequirements-EN|here]]<br /> French version [[wiki:cahier_des_charges_2016|here]]<br /> Spanish version [[wiki:AlphaSoleTechRequirements-SP|here]]<br /> <br /> <br /> ===1) Design requirements===<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> Structure forum link [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> Concentrator optic forum link [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> Engines, Program, Captors forum link [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> Absorber forum link [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ===2) General===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Reduce risks // Pay a particular attention to parasitic reflexions // *optical risks; *risks related to high pressure and high temperature hydraulic circuit<br /> <br /> Cost (material, production, manufacturing, assembling) // Minimum // Minimum&lt;300€/m² // Savings possible with respect to demonstrator<br /> <br /> ===3) Concentrator optic===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Optical efficiency // Reflectivity (at normal angle) 0.9 // 60-70% // To be set more precisely: relevant/optimized geometry, cf forum discussion; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime<br /> <br /> Robustness and lifetime // no requirement // 3 to 5 years // To be studied : *time? warranty? how much efficiency loss? renewal point, maintenance frequency... *economic balance? *also to be written in other sections : structure, optic... *set more precisely: expensive elements, frame elements last longer: 20 years or more<br /> <br /> Accesibility for cleaning and maintenance // no requirement // yes // *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted<br /> <br /> Thermal efficiency of the receptor // secondary concentration on the receptor &gt; 1.5 // 70-80% efficiency as a goal<br /> <br /> Total concentration factor // between 15 and 30 // between 15 and 30 // With 20 mirrors, it reaches about 15<br /> <br /> Secondary reflector (CPC) : design coordinated with absorber // 60% // yes<br /> <br /> ***********************<br /> <br /> ===4) Structure===<br /> <br /> Frame of the mirrors set and receptor<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Independant structure: mirror, receptor // yes // No // Fixed relative position, to be set in accordance with latitude<br /> <br /> Resistance to ambiant environment // yes, punctually //yes, permanently // wind speed, hail, rain, snow, dust<br /> <br /> Sufficient stiffness against vibrations and deformation // yes // yes // ?<br /> <br /> Ground fixing // Adjustable feet // Fixed // Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...<br /> <br /> Assembling easiness // yes // yes // kit possible<br /> <br /> Transport easiness // yes // no<br /> <br /> Welding // the less achievable // Ok // No requirement initially, compromise between : building complexity and assembling easiness<br /> <br /> Limitation of accident risks // yes // yes // at all stages : manufacturing, assembling...<br /> <br /> <br /> ===5) structure of mirrors facets===<br /> <br /> Fresnel mirror: area 2x2 m² with 20 facets 10 cm wide<br /> for use, the requirement regarding the power is to be linked with the area<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Mirror deformation limitation // deflection lower than 5 mm // 0.1° facet orientation, respectively 1cm on the receptor // (a priori) depends on receptor height, valid for 1.5m height<br /> <br /> Sun tracking (east west) // &gt;120° respectively 8h tracking // 12h tracking // ?respectively rotation of 90° in 12h<br /> <br /> Bad weather protection // yes // yes // for instance: 180° range (mirrors down)<br /> <br /> Optical alignment possible through a tuning needless of special tools // yes // yes<br /> <br /> <br /> Better: procedure to be updated for calibration<br /> <br /> Easy switching of mirror facets // yes // yes // more generally: easy maintenance<br /> <br /> *****************************<br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Real time accurate tracking of the sun motion // yes // yes // Plan a failsoft mode in case of a failure of the tracking system<br /> <br /> Motorisation of mirrors // yes // yes<br /> <br /> Electricity consumption // - // Minimum achievable // Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)<br /> <br /> Number of engines // Minimum // One per module or one for all the system // To be validated regarding the other technical choices (structure)<br /> <br /> Sun tracking to get the right angle // yes // yes, with necessary accuracy // Goal: send all the beams of each mirror on the width of the recptor (CPC width)<br /> <br /> Sensors (weather condition detection) // yes // yes // *ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))<br /> <br /> Fluid temperature and pressure measurements // yes // drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use<br /> <br /> System automatic shutdown // Optional // Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)<br /> <br /> Simple controlling panel // yes // Programming expert mode when needed, but simple to use<br /> <br /> <br /> Ideas: remote access (ethernet)? Ease programming, viewing of operating information (and history?) =&gt; To be scheduled secondly. But Arduino ports shall be planned right now<br /> <br /> ===7) Receptor (absorber)===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Specific design for the working fluid, natural or forced circulation // 100% // yes<br /> <br /> Selective material // High absorption qualities through all the solar spectrum : 100% // Absorbance 90%, infrared emissivity 15% : material intrinsically absorptive (or absorptive coating) // = high absorbance through all the solar spectrum and low infrared emissivity<br /> <br /> High thermal exchange between absorber and fluid // 60% // yes // material and conduction-convection in the fluid<br /> <br /> The system should be thermally insulated (with respect to ambiant air, infrared radiation) // 60% // yes // see requirement for the overall thermal efficiency (insulation material above and glass below)<br /> <br /> Good resistance to temperature variation (material expansion, tightness) // 60% // yes // In particular, risks related to high temperatures and pressure of fluid<br /> <br /> <br /> Ideas: *modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) **In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===8) Use===<br /> <br /> Requirements to be defined with user<br /> <br /> Running<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Position: avoid building shadow and other masks // - // ?<br /> <br /> Running range // - // ? // *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude<br /> <br /> Temperature level // - // ? // Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C<br /> <br /> <br /> ===Hydraulic circuit===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Pressure losses // - // Minimum // Limit pressure losses, above all for light fluids : air, steam<br /> <br /> Open/closed circuit // - // ?<br /> <br /> Mineral scale risks // - // ? // Gives good reason to run in a closed circuit...<br /> <br /> ===Fluid // - // ?===<br /> <br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143494 2016-08-27T03:12:51Z

<p>Andrea: added functional requirements</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guid on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guid on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Planning==<br /> August: Design, final Functional requirements<br /> September: BOM + Models<br /> Octobre/Novembre: Workshop<br /> December-March : Testing <br /> March: on production<br /> <br /> ==Functional requirements of Alphasole Prototype==<br /> English version [[wiki:AlphaSoleTechRequirements-EN|here]]<br /> French version [[wiki:cahier_des_charges_2016|here]]<br /> Spanish version [[wiki:AlphaSoleTechRequirements-SP|here]]<br /> <br /> <br /> ===1) Design requirements===<br /> <br /> Within the scope of collaborative research, we work on the requirements of each element developped thereafter in the following sections. The discussion history between contributors is available through the links to the forum (in French):<br /> <br /> Structure forum link [http://forum.osefrance.org/viewforum.php?f=9] ,<br /> Concentrator optic forum link [http://forum.osefrance.org/viewforum.php?f=10] ,<br /> Engines, Program, Captors forum link [http://forum.osefrance.org/viewforum.php?f=12] ,<br /> Absorber forum link [http://forum.osefrance.org/viewforum.php?f=11] .<br /> <br /> ===2) General===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Reduce risks // Pay a particular attention to parasitic reflexions // *optical risks; *risks related to high pressure and high temperature hydraulic circuit<br /> <br /> Cost (material, production, manufacturing, assembling) // Minimum // Minimum&lt;300€/m² // Savings possible with respect to demonstrator<br /> <br /> ===3) Concentrator optic===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Optical efficiency // Reflectivity (at normal angle) 0.9 // 60-70% // To be set more precisely: relevant/optimized geometry, cf forum discussion; reflectivity of mirrors &gt;= 0.9 ; other parameters : fouling, cleaning frequency, evolution through lifetime<br /> <br /> Robustness and lifetime // no requirement // 3 to 5 years // To be studied : *time? warranty? how much efficiency loss? renewal point, maintenance frequency... *economic balance? *also to be written in other sections : structure, optic... *set more precisely: expensive elements, frame elements last longer: 20 years or more<br /> <br /> Accesibility for cleaning and maintenance // no requirement // yes // *easy cleaning of the mirrors; *maintenance and tuning of the facets once mounted; *access to receptor once mounted<br /> <br /> Thermal efficiency of the receptor // secondary concentration on the receptor &gt; 1.5 // 70-80% efficiency as a goal<br /> <br /> Total concentration factor // between 15 and 30 // between 15 and 30 // With 20 mirrors, it reaches about 15<br /> <br /> Secondary reflector (CPC) : design coordinated with absorber // 60% // yes<br /> <br /> ***********************<br /> <br /> ===4) Structure===<br /> <br /> Frame of the mirrors set and receptor<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Independant structure: mirror, receptor // yes // No // Fixed relative position, to be set in accordance with latitude<br /> <br /> Resistance to ambiant environment // yes, punctually //yes, permanently // wind speed, hail, rain, snow, dust<br /> <br /> Sufficient stiffness against vibrations and deformation // yes // yes // ?<br /> <br /> Ground fixing // Adjustable feet // Fixed // Concrete base to be planned or fixation to an existing structure, roof... Study carefully stiffness, stability...<br /> <br /> Assembling easiness // yes // yes // kit possible<br /> <br /> Transport easiness // yes // no<br /> <br /> Welding // the less achievable // Ok // No requirement initially, compromise between : building complexity and assembling easiness<br /> <br /> Limitation of accident risks // yes // yes // at all stages : manufacturing, assembling...<br /> <br /> <br /> ===5) structure of mirrors facets===<br /> <br /> Fresnel mirror: area 2x2 m² with 20 facets 10 cm wide<br /> for use, the requirement regarding the power is to be linked with the area<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Mirror deformation limitation // deflection lower than 5 mm // 0.1° facet orientation, respectively 1cm on the receptor // (a priori) depends on receptor height, valid for 1.5m height<br /> <br /> Sun tracking (east west) // &gt;120° respectively 8h tracking // 12h tracking // ?respectively rotation of 90° in 12h<br /> <br /> Bad weather protection // yes // yes // for instance: 180° range (mirrors down)<br /> <br /> Optical alignment possible through a tuning needless of special tools // yes // yes<br /> <br /> <br /> Better: procedure to be updated for calibration<br /> <br /> Easy switching of mirror facets // yes // yes // more generally: easy maintenance<br /> <br /> *****************************<br /> <br /> ===6) tracking system (engines, program, sensors)===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Real time accurate tracking of the sun motion // yes // yes // Plan a failsoft mode in case of a failure of the tracking system<br /> <br /> Motorisation of mirrors // yes // yes<br /> <br /> Electricity consumption // - // Minimum achievable // Plan an autonomous working mode (no connection to electical grid)? (photovoltaic pannel?)<br /> <br /> Number of engines // Minimum // One per module or one for all the system // To be validated regarding the other technical choices (structure)<br /> <br /> Sun tracking to get the right angle // yes // yes, with necessary accuracy // Goal: send all the beams of each mirror on the width of the recptor (CPC width)<br /> <br /> Sensors (weather condition detection) // yes // yes // *ambiant temperature, direct sun radiation. (as a complement of process sensors (boiler and use))<br /> <br /> Fluid temperature and pressure measurements // yes // drive the circulating pump controlled by pressure and/or temperature (according to use). Steam flow rate sensor? Liquid water level sensor? =&gt; depends on type of use<br /> <br /> System automatic shutdown // Optional // Safety in case of electrical outage (circulating pump stopped =&gt; temperature increase) + in case of a storm (mirrors down (if possible)). (Resistance to hail?)<br /> <br /> Simple controlling panel // yes // Programming expert mode when needed, but simple to use<br /> <br /> <br /> Ideas: remote access (ethernet)? Ease programming, viewing of operating information (and history?) =&gt; To be scheduled secondly. But Arduino ports shall be planned right now<br /> <br /> ===7) Receptor (absorber)===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Specific design for the working fluid, natural or forced circulation // 100% // yes<br /> <br /> Selective material // High absorption qualities through all the solar spectrum : 100% // Absorbance 90%, infrared emissivity 15% : material intrinsically absorptive (or absorptive coating) // = high absorbance through all the solar spectrum and low infrared emissivity<br /> <br /> High thermal exchange between absorber and fluid // 60% // yes // material and conduction-convection in the fluid<br /> <br /> The system should be thermally insulated (with respect to ambiant air, infrared radiation) // 60% // yes // see requirement for the overall thermal efficiency (insulation material above and glass below)<br /> <br /> Good resistance to temperature variation (material expansion, tightness) // 60% // yes // In particular, risks related to high temperatures and pressure of fluid<br /> <br /> <br /> Ideas: *modularity is hardly compatible with the high constraints of the absorber (pressure, temperature variation etc.) **In case of frost, the absorber should be emptied (or the frost might destroy it). =&gt;Ambiant temperature sensor + electric valve? =&gt;design of the absorber enabling the complete emtying.<br /> <br /> ===8) Use===<br /> <br /> Requirements to be defined with user<br /> <br /> Running<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Position: avoid building shadow and other masks // - // ?<br /> <br /> Running range // - // ? // *for a sun exposure not in first hour nor in last hour, *for which hour range in the day, in the season, * for which latitude<br /> <br /> Temperature level // - // ? // Optic and best technology may be different with respect to temperature. Example: *Hot water production at 80°C; *Steam production at 130°C from liquid water; *Steam Superheating from 150°C to 250°C<br /> <br /> <br /> ===Hydraulic circuit===<br /> <br /> requirement // demonstrator // prototype // comment for proto<br /> <br /> Pressure losses // - // Minimum // Limit pressure losses, above all for light fluids : air, steam<br /> <br /> Open/closed circuit // - // ?<br /> <br /> Mineral scale risks // - // ? // Gives good reason to run in a closed circuit...<br /> <br /> ===Fluid // - // ?===<br /> <br /> <br /> Ideas: Could we have a feedback from the user? Which power (mini, maxi average) does he need? During how many hours? And for which season. At my parents', lavander distillery: July. Canned food and Jam from June to september.<br /> <br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143492 2016-08-27T03:07:50Z

<p>Andrea: /* Demonstrator SolarOSE (proof of concept of 1KW peak power) : completed */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guid on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guid on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [http://www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Functional requirements==<br /> English version [[wiki:AlphaSoleTechRequirements-EN|here]]<br /> French version [[wiki:cahier_des_charges_2016|here]]<br /> Spanish version [[wiki:AlphaSoleTechRequirements-SP|here]]<br /> ==Planning==<br /> August: Design<br /> September: BOM + Models<br /> Octobre/Novembre: Workshop<br /> December-March : Testing <br /> March: on production<br /> <br /> ===== Functional Requirements of the Demonstrator SolarOSE =====<br /> Open Source Ecologie team (OSE French chapter) is researching and developping the linear fresnel reflector.<br /> the team want to hear from you on the set of requirements you would expect as output from the solar concentrator of this kind. the current work in progress is located [[http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english | here]]<br /> <br /> you can see 2 columns describing the level required at the 2 different phases of the project, for each requirement we expressed the rate of achievement required. <br /> <br /> Phase 1 - Demonstrateur : is the proof of concept that will be presented in the &quot;[[http://www.osefrance.fr/?p=147 | Villages des alternatives]]&quot; in Paris the September 26th 2015 of 4m^2 of mirrors.<br /> Phase 2 - Prototype a: is the full scale product that we expect to deliver early 2016 after a crowdfunding campaign launched during the Villages des alternatives. This will be the Alpha prototype.<br /> <br /> The French ethercalc version of this work-in-progress product specification requirement is located [[https://www.ethercalc.org/osef_sc_specreq | here]] <br /> <br /> this document is part of the [[Product Document Requirement]]<br /> <br /> ====Introduction ====<br /> <br /> <br /> Added to this list of specific requirements, the general [[http://opensourceecology.org/wiki/OSE_Specifications_for_Product_Design | OSE Specification for product design ]] should be also applied during the conception and design.<br /> <br /> After conception and design are completed, a score will be attributed based on the [[<br /> http://opensourceecology.org/wiki/OSE_Specifications_Assessment_Template | Ose Specifications evaluation Template]] and its adherence to the below set of requirements.<br /> <br /> the discussions can be carried out on the [[http://forum.osefrance.org/viewforum.php?f=5 open forum]]<br /> <br /> ==== General ====<br /> [[http://forum.osefrance.org/viewforum.php?f=2| General on the Forum]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be DIY<br /> friendly (which gives advantage to the linear fresnel&lt;span style='display:<br /> none'&gt; reflector type of concentrator)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Linear fresnel<br /> reflector with double concentration CPC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;5KW heat power<br /> output (about 10m^2)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;10%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;able to reach<br /> more than 250øC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must allow<br /> (with additional modules) both N/S and E/W axis of i&lt;span style='display:<br /> none'&gt;nstallation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Structure ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=9| Structure on the Forum]] <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must support<br /> the whole Solar Concentrator system&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow<br /> mirrors rotation of 270ø with a complete reverse of t&lt;span style='display:<br /> none'&gt;he mirror in case of bad weather conditions&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;structure and<br /> design OSE Compatible http://opensourceecology.&lt;span style='display:none'&gt;org/wiki/OSE_Specifications_for_Product_Design&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Ground<br /> implantation must assure sufficient stability&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Sufficent<br /> rigidity to assure resistance to vibrations or impacts&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easily<br /> assembled with modular-easy to transport components&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easy optical<br /> alignment (assured by any mean - ie. Tracks, giudeli&lt;span style='display:<br /> none'&gt;nes, holes, etc)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mobile support<br /> of the mirrors to avoid deformation due to weig&lt;span style='display:none'&gt;ht,<br /> wind, vibrations, etc&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optionally<br /> without any weldering as much as possible&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=7 align=left style='height:15.0pt'&gt;optionally<br /> the concentrator and the absorber have indipendent structures (pro: less<br /> vibrations, cons: harder to align correctly)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=6 align=left style='height:15.0pt'&gt;Optionally,<br /> if N/S oriented, allow to move the mirrors toward south in order to allow<br /> seasonal optimization&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;with E/W axis,<br /> must allow 1*focal lenght of mirrors lenght more &lt;span style='display:none'&gt;than<br /> absorber on both W and E direction&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Optical Concentration ====<br /> [[http://forum.osefrance.org/viewforum.php?f=10 |Optical concentration]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=3 align=left style='height:15.0pt'&gt;Mirror's<br /> Geometry to be (to define based on best optical optimization, in progress)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors with<br /> high reflectivity (&amp;gt;90% on wide spectrum)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;resistant<br /> mirrors with high lifespan for external usage.&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors easy to<br /> clean&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Secondary<br /> concentration on the absorber higher than 2x&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;total factor of<br /> concentration 25&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;mirrors easy to<br /> fix and replace on their support&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Absorber ====<br /> [[http://forum.osefrance.org/viewforum.php?f=11| Absorber]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;specially<br /> designed for the selected thermal fluid, with passive o&lt;span<br /> style='display:none'&gt;r forced circulation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Absorbing<br /> material with high optical absorbtion rate on wide sp&lt;span style='display:<br /> none'&gt;ectrum&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;elevated<br /> thermal exchange Absorber / Fluid&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;high thermal<br /> insulation (from external air, from the point of con&lt;span style='display:<br /> none'&gt;tact with the structure, from IR radiations)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;High resistance<br /> of thermal variation constraints (high temperatu&lt;span style='display:none'&gt;re<br /> and valiration, high pressure and variation, thermal expansions and<br /> contractions)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Specially<br /> designed for the secondary concentrator&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Motors, Tracker, Programs ====<br /> [[http://forum.osefrance.org/viewforum.php?f=12| Motors, trackers, programs]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow for<br /> a real time follow &amp;amp; programmed sun follow base&lt;span style='display:none'&gt;d<br /> on Lat/long&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Automatically<br /> detect and self protect in case of bad weather&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> track the sun and send the correct angle in order&lt;span style='display:none'&gt;<br /> to optimize concentration&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> sense temperature and pressure at fluid input a&lt;span style='display:none'&gt;nd<br /> output&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;programmable to<br /> stop automatically&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must provide an<br /> easy GUI control interface (optionally handled t&lt;span style='display:none'&gt;hrough<br /> cloud, with data collection)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Modelling and studies ====<br /> [[http://forum.osefrance.org/viewforum.php?f=13| Modeling and studies]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optimisation of<br /> Solar concentrator design&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Self pilot of<br /> the solar concentrator (must perform a logical analy&lt;span style='display:<br /> none'&gt;sis of current solar concentrator of JB)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Tools to<br /> predict energetical production based on geography&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=4 align=left style='height:15.0pt'&gt;Model<br /> of economical and technical conditions for optimal usage of the solar<br /> concentrator&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Finalize<br /> localized business case&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Identify<br /> technical modifications needed to adapt to new usage&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;![if supportMisalignedColumns]&gt;<br /> &lt;tr height=0 style='display:none'&gt;<br /> &lt;/tr&gt;<br /> &lt;![endif]&gt;<br /> &lt;/table&gt;<br /> <br /> <br /> &lt;/HTML&gt;<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143491 2016-08-27T03:07:28Z

<p>Andrea: /* Demonstrator SolarOSE (proof of concept of 1KW peak power) : completed */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guid on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guid on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [www.opensourceecologie.org osefrance] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Functional requirements==<br /> English version [[wiki:AlphaSoleTechRequirements-EN|here]]<br /> French version [[wiki:cahier_des_charges_2016|here]]<br /> Spanish version [[wiki:AlphaSoleTechRequirements-SP|here]]<br /> ==Planning==<br /> August: Design<br /> September: BOM + Models<br /> Octobre/Novembre: Workshop<br /> December-March : Testing <br /> March: on production<br /> <br /> ===== Functional Requirements of the Demonstrator SolarOSE =====<br /> Open Source Ecologie team (OSE French chapter) is researching and developping the linear fresnel reflector.<br /> the team want to hear from you on the set of requirements you would expect as output from the solar concentrator of this kind. the current work in progress is located [[http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english | here]]<br /> <br /> you can see 2 columns describing the level required at the 2 different phases of the project, for each requirement we expressed the rate of achievement required. <br /> <br /> Phase 1 - Demonstrateur : is the proof of concept that will be presented in the &quot;[[http://www.osefrance.fr/?p=147 | Villages des alternatives]]&quot; in Paris the September 26th 2015 of 4m^2 of mirrors.<br /> Phase 2 - Prototype a: is the full scale product that we expect to deliver early 2016 after a crowdfunding campaign launched during the Villages des alternatives. This will be the Alpha prototype.<br /> <br /> The French ethercalc version of this work-in-progress product specification requirement is located [[https://www.ethercalc.org/osef_sc_specreq | here]] <br /> <br /> this document is part of the [[Product Document Requirement]]<br /> <br /> ====Introduction ====<br /> <br /> <br /> Added to this list of specific requirements, the general [[http://opensourceecology.org/wiki/OSE_Specifications_for_Product_Design | OSE Specification for product design ]] should be also applied during the conception and design.<br /> <br /> After conception and design are completed, a score will be attributed based on the [[<br /> http://opensourceecology.org/wiki/OSE_Specifications_Assessment_Template | Ose Specifications evaluation Template]] and its adherence to the below set of requirements.<br /> <br /> the discussions can be carried out on the [[http://forum.osefrance.org/viewforum.php?f=5 open forum]]<br /> <br /> ==== General ====<br /> [[http://forum.osefrance.org/viewforum.php?f=2| General on the Forum]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be DIY<br /> friendly (which gives advantage to the linear fresnel&lt;span style='display:<br /> none'&gt; reflector type of concentrator)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Linear fresnel<br /> reflector with double concentration CPC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;5KW heat power<br /> output (about 10m^2)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;10%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;able to reach<br /> more than 250øC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must allow<br /> (with additional modules) both N/S and E/W axis of i&lt;span style='display:<br /> none'&gt;nstallation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Structure ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=9| Structure on the Forum]] <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must support<br /> the whole Solar Concentrator system&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow<br /> mirrors rotation of 270ø with a complete reverse of t&lt;span style='display:<br /> none'&gt;he mirror in case of bad weather conditions&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;structure and<br /> design OSE Compatible http://opensourceecology.&lt;span style='display:none'&gt;org/wiki/OSE_Specifications_for_Product_Design&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Ground<br /> implantation must assure sufficient stability&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Sufficent<br /> rigidity to assure resistance to vibrations or impacts&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easily<br /> assembled with modular-easy to transport components&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easy optical<br /> alignment (assured by any mean - ie. Tracks, giudeli&lt;span style='display:<br /> none'&gt;nes, holes, etc)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mobile support<br /> of the mirrors to avoid deformation due to weig&lt;span style='display:none'&gt;ht,<br /> wind, vibrations, etc&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optionally<br /> without any weldering as much as possible&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=7 align=left style='height:15.0pt'&gt;optionally<br /> the concentrator and the absorber have indipendent structures (pro: less<br /> vibrations, cons: harder to align correctly)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=6 align=left style='height:15.0pt'&gt;Optionally,<br /> if N/S oriented, allow to move the mirrors toward south in order to allow<br /> seasonal optimization&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;with E/W axis,<br /> must allow 1*focal lenght of mirrors lenght more &lt;span style='display:none'&gt;than<br /> absorber on both W and E direction&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Optical Concentration ====<br /> [[http://forum.osefrance.org/viewforum.php?f=10 |Optical concentration]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=3 align=left style='height:15.0pt'&gt;Mirror's<br /> Geometry to be (to define based on best optical optimization, in progress)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors with<br /> high reflectivity (&amp;gt;90% on wide spectrum)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;resistant<br /> mirrors with high lifespan for external usage.&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors easy to<br /> clean&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Secondary<br /> concentration on the absorber higher than 2x&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;total factor of<br /> concentration 25&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;mirrors easy to<br /> fix and replace on their support&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Absorber ====<br /> [[http://forum.osefrance.org/viewforum.php?f=11| Absorber]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;specially<br /> designed for the selected thermal fluid, with passive o&lt;span<br /> style='display:none'&gt;r forced circulation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Absorbing<br /> material with high optical absorbtion rate on wide sp&lt;span style='display:<br /> none'&gt;ectrum&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;elevated<br /> thermal exchange Absorber / Fluid&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;high thermal<br /> insulation (from external air, from the point of con&lt;span style='display:<br /> none'&gt;tact with the structure, from IR radiations)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;High resistance<br /> of thermal variation constraints (high temperatu&lt;span style='display:none'&gt;re<br /> and valiration, high pressure and variation, thermal expansions and<br /> contractions)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Specially<br /> designed for the secondary concentrator&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Motors, Tracker, Programs ====<br /> [[http://forum.osefrance.org/viewforum.php?f=12| Motors, trackers, programs]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow for<br /> a real time follow &amp;amp; programmed sun follow base&lt;span style='display:none'&gt;d<br /> on Lat/long&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Automatically<br /> detect and self protect in case of bad weather&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> track the sun and send the correct angle in order&lt;span style='display:none'&gt;<br /> to optimize concentration&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> sense temperature and pressure at fluid input a&lt;span style='display:none'&gt;nd<br /> output&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;programmable to<br /> stop automatically&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must provide an<br /> easy GUI control interface (optionally handled t&lt;span style='display:none'&gt;hrough<br /> cloud, with data collection)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Modelling and studies ====<br /> [[http://forum.osefrance.org/viewforum.php?f=13| Modeling and studies]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optimisation of<br /> Solar concentrator design&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Self pilot of<br /> the solar concentrator (must perform a logical analy&lt;span style='display:<br /> none'&gt;sis of current solar concentrator of JB)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Tools to<br /> predict energetical production based on geography&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=4 align=left style='height:15.0pt'&gt;Model<br /> of economical and technical conditions for optimal usage of the solar<br /> concentrator&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Finalize<br /> localized business case&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Identify<br /> technical modifications needed to adapt to new usage&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;![if supportMisalignedColumns]&gt;<br /> &lt;tr height=0 style='display:none'&gt;<br /> &lt;/tr&gt;<br /> &lt;![endif]&gt;<br /> &lt;/table&gt;<br /> <br /> <br /> &lt;/HTML&gt;<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143490 2016-08-27T03:07:05Z

<p>Andrea: /* Demonstrator SolarOSE (proof of concept of 1KW peak power) : completed */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guid on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guid on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [www.opensourceecologie.org osefrance.fr] :)<br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Functional requirements==<br /> English version [[wiki:AlphaSoleTechRequirements-EN|here]]<br /> French version [[wiki:cahier_des_charges_2016|here]]<br /> Spanish version [[wiki:AlphaSoleTechRequirements-SP|here]]<br /> ==Planning==<br /> August: Design<br /> September: BOM + Models<br /> Octobre/Novembre: Workshop<br /> December-March : Testing <br /> March: on production<br /> <br /> ===== Functional Requirements of the Demonstrator SolarOSE =====<br /> Open Source Ecologie team (OSE French chapter) is researching and developping the linear fresnel reflector.<br /> the team want to hear from you on the set of requirements you would expect as output from the solar concentrator of this kind. the current work in progress is located [[http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english | here]]<br /> <br /> you can see 2 columns describing the level required at the 2 different phases of the project, for each requirement we expressed the rate of achievement required. <br /> <br /> Phase 1 - Demonstrateur : is the proof of concept that will be presented in the &quot;[[http://www.osefrance.fr/?p=147 | Villages des alternatives]]&quot; in Paris the September 26th 2015 of 4m^2 of mirrors.<br /> Phase 2 - Prototype a: is the full scale product that we expect to deliver early 2016 after a crowdfunding campaign launched during the Villages des alternatives. This will be the Alpha prototype.<br /> <br /> The French ethercalc version of this work-in-progress product specification requirement is located [[https://www.ethercalc.org/osef_sc_specreq | here]] <br /> <br /> this document is part of the [[Product Document Requirement]]<br /> <br /> ====Introduction ====<br /> <br /> <br /> Added to this list of specific requirements, the general [[http://opensourceecology.org/wiki/OSE_Specifications_for_Product_Design | OSE Specification for product design ]] should be also applied during the conception and design.<br /> <br /> After conception and design are completed, a score will be attributed based on the [[<br /> http://opensourceecology.org/wiki/OSE_Specifications_Assessment_Template | Ose Specifications evaluation Template]] and its adherence to the below set of requirements.<br /> <br /> the discussions can be carried out on the [[http://forum.osefrance.org/viewforum.php?f=5 open forum]]<br /> <br /> ==== General ====<br /> [[http://forum.osefrance.org/viewforum.php?f=2| General on the Forum]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be DIY<br /> friendly (which gives advantage to the linear fresnel&lt;span style='display:<br /> none'&gt; reflector type of concentrator)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Linear fresnel<br /> reflector with double concentration CPC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;5KW heat power<br /> output (about 10m^2)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;10%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;able to reach<br /> more than 250øC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must allow<br /> (with additional modules) both N/S and E/W axis of i&lt;span style='display:<br /> none'&gt;nstallation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Structure ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=9| Structure on the Forum]] <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must support<br /> the whole Solar Concentrator system&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow<br /> mirrors rotation of 270ø with a complete reverse of t&lt;span style='display:<br /> none'&gt;he mirror in case of bad weather conditions&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;structure and<br /> design OSE Compatible http://opensourceecology.&lt;span style='display:none'&gt;org/wiki/OSE_Specifications_for_Product_Design&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Ground<br /> implantation must assure sufficient stability&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Sufficent<br /> rigidity to assure resistance to vibrations or impacts&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easily<br /> assembled with modular-easy to transport components&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easy optical<br /> alignment (assured by any mean - ie. Tracks, giudeli&lt;span style='display:<br /> none'&gt;nes, holes, etc)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mobile support<br /> of the mirrors to avoid deformation due to weig&lt;span style='display:none'&gt;ht,<br /> wind, vibrations, etc&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optionally<br /> without any weldering as much as possible&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=7 align=left style='height:15.0pt'&gt;optionally<br /> the concentrator and the absorber have indipendent structures (pro: less<br /> vibrations, cons: harder to align correctly)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=6 align=left style='height:15.0pt'&gt;Optionally,<br /> if N/S oriented, allow to move the mirrors toward south in order to allow<br /> seasonal optimization&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;with E/W axis,<br /> must allow 1*focal lenght of mirrors lenght more &lt;span style='display:none'&gt;than<br /> absorber on both W and E direction&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Optical Concentration ====<br /> [[http://forum.osefrance.org/viewforum.php?f=10 |Optical concentration]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=3 align=left style='height:15.0pt'&gt;Mirror's<br /> Geometry to be (to define based on best optical optimization, in progress)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors with<br /> high reflectivity (&amp;gt;90% on wide spectrum)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;resistant<br /> mirrors with high lifespan for external usage.&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors easy to<br /> clean&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Secondary<br /> concentration on the absorber higher than 2x&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;total factor of<br /> concentration 25&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;mirrors easy to<br /> fix and replace on their support&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Absorber ====<br /> [[http://forum.osefrance.org/viewforum.php?f=11| Absorber]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;specially<br /> designed for the selected thermal fluid, with passive o&lt;span<br /> style='display:none'&gt;r forced circulation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Absorbing<br /> material with high optical absorbtion rate on wide sp&lt;span style='display:<br /> none'&gt;ectrum&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;elevated<br /> thermal exchange Absorber / Fluid&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;high thermal<br /> insulation (from external air, from the point of con&lt;span style='display:<br /> none'&gt;tact with the structure, from IR radiations)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;High resistance<br /> of thermal variation constraints (high temperatu&lt;span style='display:none'&gt;re<br /> and valiration, high pressure and variation, thermal expansions and<br /> contractions)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Specially<br /> designed for the secondary concentrator&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Motors, Tracker, Programs ====<br /> [[http://forum.osefrance.org/viewforum.php?f=12| Motors, trackers, programs]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow for<br /> a real time follow &amp;amp; programmed sun follow base&lt;span style='display:none'&gt;d<br /> on Lat/long&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Automatically<br /> detect and self protect in case of bad weather&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> track the sun and send the correct angle in order&lt;span style='display:none'&gt;<br /> to optimize concentration&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> sense temperature and pressure at fluid input a&lt;span style='display:none'&gt;nd<br /> output&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;programmable to<br /> stop automatically&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must provide an<br /> easy GUI control interface (optionally handled t&lt;span style='display:none'&gt;hrough<br /> cloud, with data collection)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Modelling and studies ====<br /> [[http://forum.osefrance.org/viewforum.php?f=13| Modeling and studies]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optimisation of<br /> Solar concentrator design&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Self pilot of<br /> the solar concentrator (must perform a logical analy&lt;span style='display:<br /> none'&gt;sis of current solar concentrator of JB)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Tools to<br /> predict energetical production based on geography&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=4 align=left style='height:15.0pt'&gt;Model<br /> of economical and technical conditions for optimal usage of the solar<br /> concentrator&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Finalize<br /> localized business case&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Identify<br /> technical modifications needed to adapt to new usage&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;![if supportMisalignedColumns]&gt;<br /> &lt;tr height=0 style='display:none'&gt;<br /> &lt;/tr&gt;<br /> &lt;![endif]&gt;<br /> &lt;/table&gt;<br /> <br /> <br /> &lt;/HTML&gt;<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=143489 2016-08-27T03:06:07Z

<p>Andrea: added devcelopment status of the solar concentrator by Open Source Ecologie France</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Links to DIY Projects=<br /> *Fresnel Type, circular from the Ukraine - [http://wiki.energytorrent.org/doku.php/concentrator_diversity]<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =====Open Source Ecology driven projects=====<br /> <br /> We proceeded using the iterated method product development lifecycle, defining the functional requirements, building table models, building the actual project.<br /> We started with a proof of concept developped in August 2015 during POC21 event in France, it was named Solar-OSE<br /> We are moving toward the first &quot;alpha&quot; version, not yet optimized in terms of costs, method of build and quality but full size, named Alpha-Sole it will be built in Autumn 2016.<br /> We will then develop the third and final version of this machine that will be fully optimized, yet to be named and conceptualized based on the findings over Alpha Sole and Solar Ose.<br /> <br /> =====Development status=====<br /> <br /> ===Demonstrator SolarOSE (proof of concept of 1KW peak power) : '''completed'''===<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english the Functional requirements]<br /> [http://en.wikifab.org/index.php/SolarOSE_-_Solar_concentrator_for_steam_generation Full builduing guid on Wikifab.org]<br /> [http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/ Full builduing guid on instructables]<br /> Complementary to this manual, you can find online more information on:<br /> <br /> Software, Electronics, Modelling (once finalized), documentation, licence details: see [https://github.com/osefrance/SolarConcentrator Github]<br /> discussions on our [http://forum.osefrance.org/ Forum]<br /> the documentation and collaborative writing in French on our [http://wiki.osefrance.org/ Wiki]<br /> [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english functional requirements] giving a comparison between the present demonstrator and the next prototype<br /> [http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire the project] in French:<br /> you can subscribe to our newsletter and more on our website: [www.opensourceecologie.org www.osefrance.fr] :)<br /> <br /> <br /> ===AlphaSole (first module of 5KW Peak power) : '''on development'''===<br /> <br /> ==Functional requirements==<br /> English version [[wiki:AlphaSoleTechRequirements-EN|here]]<br /> French version [[wiki:cahier_des_charges_2016|here]]<br /> Spanish version [[wiki:AlphaSoleTechRequirements-SP|here]]<br /> ==Planning==<br /> August: Design<br /> September: BOM + Models<br /> Octobre/Novembre: Workshop<br /> December-March : Testing <br /> March: on production<br /> <br /> ===== Functional Requirements of the Demonstrator SolarOSE =====<br /> Open Source Ecologie team (OSE French chapter) is researching and developping the linear fresnel reflector.<br /> the team want to hear from you on the set of requirements you would expect as output from the solar concentrator of this kind. the current work in progress is located [[http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english | here]]<br /> <br /> you can see 2 columns describing the level required at the 2 different phases of the project, for each requirement we expressed the rate of achievement required. <br /> <br /> Phase 1 - Demonstrateur : is the proof of concept that will be presented in the &quot;[[http://www.osefrance.fr/?p=147 | Villages des alternatives]]&quot; in Paris the September 26th 2015 of 4m^2 of mirrors.<br /> Phase 2 - Prototype a: is the full scale product that we expect to deliver early 2016 after a crowdfunding campaign launched during the Villages des alternatives. This will be the Alpha prototype.<br /> <br /> The French ethercalc version of this work-in-progress product specification requirement is located [[https://www.ethercalc.org/osef_sc_specreq | here]] <br /> <br /> this document is part of the [[Product Document Requirement]]<br /> <br /> ====Introduction ====<br /> <br /> <br /> Added to this list of specific requirements, the general [[http://opensourceecology.org/wiki/OSE_Specifications_for_Product_Design | OSE Specification for product design ]] should be also applied during the conception and design.<br /> <br /> After conception and design are completed, a score will be attributed based on the [[<br /> http://opensourceecology.org/wiki/OSE_Specifications_Assessment_Template | Ose Specifications evaluation Template]] and its adherence to the below set of requirements.<br /> <br /> the discussions can be carried out on the [[http://forum.osefrance.org/viewforum.php?f=5 open forum]]<br /> <br /> ==== General ====<br /> [[http://forum.osefrance.org/viewforum.php?f=2| General on the Forum]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be DIY<br /> friendly (which gives advantage to the linear fresnel&lt;span style='display:<br /> none'&gt; reflector type of concentrator)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Linear fresnel<br /> reflector with double concentration CPC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;5KW heat power<br /> output (about 10m^2)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;10%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;able to reach<br /> more than 250øC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must allow<br /> (with additional modules) both N/S and E/W axis of i&lt;span style='display:<br /> none'&gt;nstallation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Structure ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=9| Structure on the Forum]] <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must support<br /> the whole Solar Concentrator system&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow<br /> mirrors rotation of 270ø with a complete reverse of t&lt;span style='display:<br /> none'&gt;he mirror in case of bad weather conditions&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;structure and<br /> design OSE Compatible http://opensourceecology.&lt;span style='display:none'&gt;org/wiki/OSE_Specifications_for_Product_Design&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Ground<br /> implantation must assure sufficient stability&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Sufficent<br /> rigidity to assure resistance to vibrations or impacts&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easily<br /> assembled with modular-easy to transport components&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easy optical<br /> alignment (assured by any mean - ie. Tracks, giudeli&lt;span style='display:<br /> none'&gt;nes, holes, etc)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mobile support<br /> of the mirrors to avoid deformation due to weig&lt;span style='display:none'&gt;ht,<br /> wind, vibrations, etc&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optionally<br /> without any weldering as much as possible&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=7 align=left style='height:15.0pt'&gt;optionally<br /> the concentrator and the absorber have indipendent structures (pro: less<br /> vibrations, cons: harder to align correctly)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=6 align=left style='height:15.0pt'&gt;Optionally,<br /> if N/S oriented, allow to move the mirrors toward south in order to allow<br /> seasonal optimization&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;with E/W axis,<br /> must allow 1*focal lenght of mirrors lenght more &lt;span style='display:none'&gt;than<br /> absorber on both W and E direction&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Optical Concentration ====<br /> [[http://forum.osefrance.org/viewforum.php?f=10 |Optical concentration]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=3 align=left style='height:15.0pt'&gt;Mirror's<br /> Geometry to be (to define based on best optical optimization, in progress)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors with<br /> high reflectivity (&amp;gt;90% on wide spectrum)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;resistant<br /> mirrors with high lifespan for external usage.&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors easy to<br /> clean&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Secondary<br /> concentration on the absorber higher than 2x&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;total factor of<br /> concentration 25&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;mirrors easy to<br /> fix and replace on their support&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Absorber ====<br /> [[http://forum.osefrance.org/viewforum.php?f=11| Absorber]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;specially<br /> designed for the selected thermal fluid, with passive o&lt;span<br /> style='display:none'&gt;r forced circulation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Absorbing<br /> material with high optical absorbtion rate on wide sp&lt;span style='display:<br /> none'&gt;ectrum&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;elevated<br /> thermal exchange Absorber / Fluid&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;high thermal<br /> insulation (from external air, from the point of con&lt;span style='display:<br /> none'&gt;tact with the structure, from IR radiations)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;High resistance<br /> of thermal variation constraints (high temperatu&lt;span style='display:none'&gt;re<br /> and valiration, high pressure and variation, thermal expansions and<br /> contractions)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Specially<br /> designed for the secondary concentrator&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Motors, Tracker, Programs ====<br /> [[http://forum.osefrance.org/viewforum.php?f=12| Motors, trackers, programs]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow for<br /> a real time follow &amp;amp; programmed sun follow base&lt;span style='display:none'&gt;d<br /> on Lat/long&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Automatically<br /> detect and self protect in case of bad weather&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> track the sun and send the correct angle in order&lt;span style='display:none'&gt;<br /> to optimize concentration&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> sense temperature and pressure at fluid input a&lt;span style='display:none'&gt;nd<br /> output&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;programmable to<br /> stop automatically&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must provide an<br /> easy GUI control interface (optionally handled t&lt;span style='display:none'&gt;hrough<br /> cloud, with data collection)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Modelling and studies ====<br /> [[http://forum.osefrance.org/viewforum.php?f=13| Modeling and studies]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optimisation of<br /> Solar concentrator design&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Self pilot of<br /> the solar concentrator (must perform a logical analy&lt;span style='display:<br /> none'&gt;sis of current solar concentrator of JB)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Tools to<br /> predict energetical production based on geography&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=4 align=left style='height:15.0pt'&gt;Model<br /> of economical and technical conditions for optimal usage of the solar<br /> concentrator&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Finalize<br /> localized business case&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Identify<br /> technical modifications needed to adapt to new usage&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;![if supportMisalignedColumns]&gt;<br /> &lt;tr height=0 style='display:none'&gt;<br /> &lt;/tr&gt;<br /> &lt;![endif]&gt;<br /> &lt;/table&gt;<br /> <br /> <br /> &lt;/HTML&gt;<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Osefrance&diff=134149 2016-01-11T07:10:03Z

<p>Andrea: main page</p> <hr /> <div>'''OSE France''' is a french no profit association working on researching and developing the GVCS.<br /> <br /> you can find the French website and all the documentation from the French team here:<br /> <br /> http://www.osefrance.org/<br /> http://wiki.osefrance.org/<br /> <br /> <br /> <br /> <br /> == the projects: ==<br /> <br /> '''<br /> the Solar Concentrator''':<br /> Technical requirements English version: http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english or http://opensourceecology.org/wiki/Solar_Concentrator/Research_Development<br /> <br /> Technical requirement French version: ...<br /> <br /> '''Status''': Prototype in scale completed and documented.<br /> in French (BOM, costs, assembly instructions, studies): http://wiki.osefrance.org/doku.php?id=wiki:demonstrateur<br /> in English on instructables: http://www.instructables.com/id/Solar-OSE-Solar-concentrator-for-steam-generation/<br /> <br /> New functional requirements for the 1:1 size is currently being developed and discussed here: <br /> http://forum.osefrance.org/viewtopic.php?f=2&amp;t=3019</div>

Andrea https://wiki.opensourceecology.org/index.php?title=OSE_Governance&diff=128087 2015-04-14T17:38:22Z

<p>Andrea: added OSE_fr</p> <hr /> <div>{{Organization}}<br /> <br /> '''[[OSE]]''' is currently run as a dictatorship solely under the direction of [[Marcin Jakubowski]].<br /> <br /> There are forks of OSE which encourage the true ''Open'' Source philosophy and have a democratic hierarchy, like <br /> <br /> '''OSEG''' - Open Source Ecology Germany[[http://www.OpenSourceEcology.de]]<br /> <br /> '''OSEE''' - Open Source Ecology Europe[[http://oseeurope.org]]<br /> <br /> '''OTF''' - Open Tech Forever[[http://www.opentechforever.com]]<br /> <br /> '''OSE_Fr''' - Open Source Ecologie in France [[http://www.osefrance.fr]] basing its governance on Sociocratic principles.</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator_-_LFR&diff=128086 2015-04-14T17:36:07Z

<p>Andrea: initial project page</p> <hr /> <div><br /> <br /> this page is under construction.<br /> main contributions are awaiting to be translated from the french wiki:<br /> [http://wiki.osefrance.org/doku.php?id=wiki:demonstrateur about the &quot;Demonstrateur&quot; ](the proof of concept on development right now)<br /> [http://wiki.osefrance.org/doku.php?id=wiki:cahier_des_charges the technical specifications ]of the proof of concept<br /> [http://forum.osefrance.org/viewforum.php?f=2&amp;sid=21f534d97ac49bba97012a1e6af2fd60 the forum] where the brainstorming activity happens<br /> <br /> <br /> this project is brought forward by [Open Source Ecologie] and all contribution into R&amp;D and or documenting translating will be very appreciated</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Team&diff=128085 2015-04-14T17:08:57Z

<p>Andrea: added collaborators from france</p> <hr /> <div>{{Staff and contractors}}<br /> <br /> =OSE Board of Directors=<br /> <br /> See [[Board of Directors]]<br /> <br /> =Collaborators=<br /> <br /> *[[Dave Hakkens]] - [[Precious Plastic]] - bioplastic extrusion for Tree Guards; spin casting of bioplastic containers<br /> *[[Yann Lischetti]] - [[Velocar]] project<br /> *[[Mustafa Luka]] - [[Koruza]] project<br /> *[[Paulo Marini]] - Open Source [[Aquaponics Lab]]<br /> *[[Pawel Sroczynski]] - [[Cohabitat Group]]<br /> *[[Chris Agnos]] - [[Sustainable Human]]<br /> *[[Jae Sabol]] - [[One Community]]<br /> *[[Jeff Moe]] - [[Lulzbot]] 3D Printer<br /> *[[Stefan Hechenberger]], [[Addie Wagenknecht]] - [[Lasersaur]] project<br /> *[[James Wise]]<br /> *[[Aidan Williamson]]<br /> *[[James Slade]]<br /> *[[Zach Dwiel]]<br /> *[[Monica Zamora]]<br /> *[[Andrea Sannuto]] - [[Solar Concentrator - LFR]] and organizer of the French Association [[Open Source Ecologie]]<br /> *[[Hugo Frederich]] - [[Solar Concentrator - LFR]] and R&amp;D for other GVCS projects from France<br /> <br /> <br /> =Other Contributors=<br /> *[[Kavitha Swaminathan]]<br /> *[[Marshall Hilton]]<br /> *[[Will Cleaver]]<br /> *[[Chris Fornof]]<br /> *[[Will Bratton]]<br /> *[[Thad Getterman]]<br /> *[[Brianna Kufa]]<br /> *[[Jacob Dalton]]<br /> *[[Gabrielle Leblanc]]<br /> *[[Jose Bravo]]<br /> *[[Yoonseo Kang]]<br /> *[[Parker Bonnell]]<br /> *[[Tristan Copley Smith]]<br /> *[[Graham Robertson]]<br /> *[[Shonda Baker]]<br /> *[[Darren Vandervort]]<br /> *[[Ted Mosher]]<br /> *[[Alexander Briggs]]<br /> *[[Mike Apostol]]<br /> *[[Matt Schwabauer]]<br /> *[[Khuong Dinh]] <br /> *[[Joe Justice]] <br /> *[[Vann Miller]] <br /> *[[Simon Walter-Hansen]] <br /> <br /> [[Category:About]]</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=126288 2015-02-23T16:38:50Z

<p>Andrea: /* Motors, Tracker, Programs */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> <br /> ===== Technical Requirements =====<br /> Open Source Ecologie team (OSE French chapter) is researching and developping the linear fresnel reflector.<br /> the team want to hear from you on the set of requirements you would expect as output from the solar concentrator of this kind. the current work in progress is located [[http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english | here]]<br /> <br /> you can see 2 columns describing the level required at the 2 different phases of the project, for each requirement we expressed the rate of achievement required. <br /> <br /> Phase 1 - Demonstrateur : is the proof of concept that will be presented in the &quot;[[http://www.osefrance.fr/?p=147 | Villages des alternatives]]&quot; in Paris the September 26th 2015 of 4m^2 of mirrors.<br /> Phase 2 - Prototype a: is the full scale product that we expect to deliver early 2016 after a crowdfunding campaign launched during the Villages des alternatives. This will be the Alpha prototype.<br /> <br /> The French ethercalc version of this work-in-progress product specification requirement is located [[https://www.ethercalc.org/osef_sc_specreq | here]] <br /> <br /> this document is part of the [[Product Document Requirement]]<br /> <br /> ====Introduction ====<br /> <br /> <br /> Added to this list of specific requirements, the general [[http://opensourceecology.org/wiki/OSE_Specifications_for_Product_Design | OSE Specification for product design ]] should be also applied during the conception and design.<br /> <br /> After conception and design are completed, a score will be attributed based on the [[<br /> http://opensourceecology.org/wiki/OSE_Specifications_Assessment_Template | Ose Specifications evaluation Template]] and its adherence to the below set of requirements.<br /> <br /> the discussions can be carried out on the [[http://forum.osefrance.org/viewforum.php?f=5 open forum]]<br /> <br /> ==== General ====<br /> [[http://forum.osefrance.org/viewforum.php?f=2| General on the Forum]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be DIY<br /> friendly (which gives advantage to the linear fresnel&lt;span style='display:<br /> none'&gt; reflector type of concentrator)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Linear fresnel<br /> reflector with double concentration CPC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;5KW heat power<br /> output (about 10m^2)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;10%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;able to reach<br /> more than 250øC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must allow<br /> (with additional modules) both N/S and E/W axis of i&lt;span style='display:<br /> none'&gt;nstallation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Structure ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=9| Structure on the Forum]] <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must support<br /> the whole Solar Concentrator system&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow<br /> mirrors rotation of 270ø with a complete reverse of t&lt;span style='display:<br /> none'&gt;he mirror in case of bad weather conditions&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;structure and<br /> design OSE Compatible http://opensourceecology.&lt;span style='display:none'&gt;org/wiki/OSE_Specifications_for_Product_Design&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Ground<br /> implantation must assure sufficient stability&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Sufficent<br /> rigidity to assure resistance to vibrations or impacts&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easily<br /> assembled with modular-easy to transport components&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easy optical<br /> alignment (assured by any mean - ie. Tracks, giudeli&lt;span style='display:<br /> none'&gt;nes, holes, etc)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mobile support<br /> of the mirrors to avoid deformation due to weig&lt;span style='display:none'&gt;ht,<br /> wind, vibrations, etc&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optionally<br /> without any weldering as much as possible&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=7 align=left style='height:15.0pt'&gt;optionally<br /> the concentrator and the absorber have indipendent structures (pro: less<br /> vibrations, cons: harder to align correctly)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=6 align=left style='height:15.0pt'&gt;Optionally,<br /> if N/S oriented, allow to move the mirrors toward south in order to allow<br /> seasonal optimization&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;with E/W axis,<br /> must allow 1*focal lenght of mirrors lenght more &lt;span style='display:none'&gt;than<br /> absorber on both W and E direction&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Optical Concentration ====<br /> [[http://forum.osefrance.org/viewforum.php?f=10 |Optical concentration]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=3 align=left style='height:15.0pt'&gt;Mirror's<br /> Geometry to be (to define based on best optical optimization, in progress)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors with<br /> high reflectivity (&amp;gt;90% on wide spectrum)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;resistant<br /> mirrors with high lifespan for external usage.&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors easy to<br /> clean&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Secondary<br /> concentration on the absorber higher than 2x&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;total factor of<br /> concentration 25&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;mirrors easy to<br /> fix and replace on their support&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Absorber ====<br /> [[http://forum.osefrance.org/viewforum.php?f=11| Absorber]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;specially<br /> designed for the selected thermal fluid, with passive o&lt;span<br /> style='display:none'&gt;r forced circulation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Absorbing<br /> material with high optical absorbtion rate on wide sp&lt;span style='display:<br /> none'&gt;ectrum&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;elevated<br /> thermal exchange Absorber / Fluid&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;high thermal<br /> insulation (from external air, from the point of con&lt;span style='display:<br /> none'&gt;tact with the structure, from IR radiations)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;High resistance<br /> of thermal variation constraints (high temperatu&lt;span style='display:none'&gt;re<br /> and valiration, high pressure and variation, thermal expansions and<br /> contractions)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Specially<br /> designed for the secondary concentrator&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Motors, Tracker, Programs ====<br /> [[http://forum.osefrance.org/viewforum.php?f=12| Motors, trackers, programs]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow for<br /> a real time follow &amp;amp; programmed sun follow base&lt;span style='display:none'&gt;d<br /> on Lat/long&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Automatically<br /> detect and self protect in case of bad weather&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> track the sun and send the correct angle in order&lt;span style='display:none'&gt;<br /> to optimize concentration&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> sense temperature and pressure at fluid input a&lt;span style='display:none'&gt;nd<br /> output&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;programmable to<br /> stop automatically&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must provide an<br /> easy GUI control interface (optionally handled t&lt;span style='display:none'&gt;hrough<br /> cloud, with data collection)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Modelling and studies ====<br /> [[http://forum.osefrance.org/viewforum.php?f=13| Modeling and studies]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optimisation of<br /> Solar concentrator design&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Self pilot of<br /> the solar concentrator (must perform a logical analy&lt;span style='display:<br /> none'&gt;sis of current solar concentrator of JB)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Tools to<br /> predict energetical production based on geography&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=4 align=left style='height:15.0pt'&gt;Model<br /> of economical and technical conditions for optimal usage of the solar<br /> concentrator&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Finalize<br /> localized business case&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Identify<br /> technical modifications needed to adapt to new usage&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;![if supportMisalignedColumns]&gt;<br /> &lt;tr height=0 style='display:none'&gt;<br /> &lt;/tr&gt;<br /> &lt;![endif]&gt;<br /> &lt;/table&gt;<br /> <br /> <br /> &lt;/HTML&gt;<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=126287 2015-02-23T16:38:13Z

<p>Andrea: /* Introduction */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> <br /> ===== Technical Requirements =====<br /> Open Source Ecologie team (OSE French chapter) is researching and developping the linear fresnel reflector.<br /> the team want to hear from you on the set of requirements you would expect as output from the solar concentrator of this kind. the current work in progress is located [[http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english | here]]<br /> <br /> you can see 2 columns describing the level required at the 2 different phases of the project, for each requirement we expressed the rate of achievement required. <br /> <br /> Phase 1 - Demonstrateur : is the proof of concept that will be presented in the &quot;[[http://www.osefrance.fr/?p=147 | Villages des alternatives]]&quot; in Paris the September 26th 2015 of 4m^2 of mirrors.<br /> Phase 2 - Prototype a: is the full scale product that we expect to deliver early 2016 after a crowdfunding campaign launched during the Villages des alternatives. This will be the Alpha prototype.<br /> <br /> The French ethercalc version of this work-in-progress product specification requirement is located [[https://www.ethercalc.org/osef_sc_specreq | here]] <br /> <br /> this document is part of the [[Product Document Requirement]]<br /> <br /> ====Introduction ====<br /> <br /> <br /> Added to this list of specific requirements, the general [[http://opensourceecology.org/wiki/OSE_Specifications_for_Product_Design | OSE Specification for product design ]] should be also applied during the conception and design.<br /> <br /> After conception and design are completed, a score will be attributed based on the [[<br /> http://opensourceecology.org/wiki/OSE_Specifications_Assessment_Template | Ose Specifications evaluation Template]] and its adherence to the below set of requirements.<br /> <br /> the discussions can be carried out on the [[http://forum.osefrance.org/viewforum.php?f=5 open forum]]<br /> <br /> ==== General ====<br /> [[http://forum.osefrance.org/viewforum.php?f=2| General on the Forum]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be DIY<br /> friendly (which gives advantage to the linear fresnel&lt;span style='display:<br /> none'&gt; reflector type of concentrator)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Linear fresnel<br /> reflector with double concentration CPC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;5KW heat power<br /> output (about 10m^2)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;10%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;able to reach<br /> more than 250øC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must allow<br /> (with additional modules) both N/S and E/W axis of i&lt;span style='display:<br /> none'&gt;nstallation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Structure ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=9| Structure on the Forum]] <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must support<br /> the whole Solar Concentrator system&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow<br /> mirrors rotation of 270ø with a complete reverse of t&lt;span style='display:<br /> none'&gt;he mirror in case of bad weather conditions&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;structure and<br /> design OSE Compatible http://opensourceecology.&lt;span style='display:none'&gt;org/wiki/OSE_Specifications_for_Product_Design&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Ground<br /> implantation must assure sufficient stability&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Sufficent<br /> rigidity to assure resistance to vibrations or impacts&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easily<br /> assembled with modular-easy to transport components&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easy optical<br /> alignment (assured by any mean - ie. Tracks, giudeli&lt;span style='display:<br /> none'&gt;nes, holes, etc)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mobile support<br /> of the mirrors to avoid deformation due to weig&lt;span style='display:none'&gt;ht,<br /> wind, vibrations, etc&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optionally<br /> without any weldering as much as possible&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=7 align=left style='height:15.0pt'&gt;optionally<br /> the concentrator and the absorber have indipendent structures (pro: less<br /> vibrations, cons: harder to align correctly)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=6 align=left style='height:15.0pt'&gt;Optionally,<br /> if N/S oriented, allow to move the mirrors toward south in order to allow<br /> seasonal optimization&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;with E/W axis,<br /> must allow 1*focal lenght of mirrors lenght more &lt;span style='display:none'&gt;than<br /> absorber on both W and E direction&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Optical Concentration ====<br /> [[http://forum.osefrance.org/viewforum.php?f=10 |Optical concentration]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=3 align=left style='height:15.0pt'&gt;Mirror's<br /> Geometry to be (to define based on best optical optimization, in progress)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors with<br /> high reflectivity (&amp;gt;90% on wide spectrum)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;resistant<br /> mirrors with high lifespan for external usage.&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors easy to<br /> clean&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Secondary<br /> concentration on the absorber higher than 2x&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;total factor of<br /> concentration 25&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;mirrors easy to<br /> fix and replace on their support&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Absorber ====<br /> [[http://forum.osefrance.org/viewforum.php?f=11| Absorber]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;specially<br /> designed for the selected thermal fluid, with passive o&lt;span<br /> style='display:none'&gt;r forced circulation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Absorbing<br /> material with high optical absorbtion rate on wide sp&lt;span style='display:<br /> none'&gt;ectrum&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;elevated<br /> thermal exchange Absorber / Fluid&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;high thermal<br /> insulation (from external air, from the point of con&lt;span style='display:<br /> none'&gt;tact with the structure, from IR radiations)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;High resistance<br /> of thermal variation constraints (high temperatu&lt;span style='display:none'&gt;re<br /> and valiration, high pressure and variation, thermal expansions and<br /> contractions)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Specially<br /> designed for the secondary concentrator&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Motors, Tracker, Programs ====<br /> [[http://forum.osefrance.org/viewforum.php?f=12| Motors,<br /> trackers, programs]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow for<br /> a real time follow &amp;amp; programmed sun follow base&lt;span style='display:none'&gt;d<br /> on Lat/long&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Automatically<br /> detect and self protect in case of bad weather&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> track the sun and send the correct angle in order&lt;span style='display:none'&gt;<br /> to optimize concentration&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> sense temperature and pressure at fluid input a&lt;span style='display:none'&gt;nd<br /> output&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;programmable to<br /> stop automatically&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must provide an<br /> easy GUI control interface (optionally handled t&lt;span style='display:none'&gt;hrough<br /> cloud, with data collection)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Modelling and studies ====<br /> [[http://forum.osefrance.org/viewforum.php?f=13| Modeling and studies]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optimisation of<br /> Solar concentrator design&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Self pilot of<br /> the solar concentrator (must perform a logical analy&lt;span style='display:<br /> none'&gt;sis of current solar concentrator of JB)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Tools to<br /> predict energetical production based on geography&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=4 align=left style='height:15.0pt'&gt;Model<br /> of economical and technical conditions for optimal usage of the solar<br /> concentrator&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Finalize<br /> localized business case&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Identify<br /> technical modifications needed to adapt to new usage&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;![if supportMisalignedColumns]&gt;<br /> &lt;tr height=0 style='display:none'&gt;<br /> &lt;/tr&gt;<br /> &lt;![endif]&gt;<br /> &lt;/table&gt;<br /> <br /> <br /> &lt;/HTML&gt;<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=126286 2015-02-23T16:31:53Z

<p>Andrea: /* Technical Requirements */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> <br /> ===== Technical Requirements =====<br /> Open Source Ecologie team (OSE French chapter) is researching and developping the linear fresnel reflector.<br /> the team want to hear from you on the set of requirements you would expect as output from the solar concentrator of this kind. the current work in progress is located [[http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english | here]]<br /> <br /> you can see 2 columns describing the level required at the 2 different phases of the project, for each requirement we expressed the rate of achievement required. <br /> <br /> Phase 1 - Demonstrateur : is the proof of concept that will be presented in the &quot;[[http://www.osefrance.fr/?p=147 | Villages des alternatives]]&quot; in Paris the September 26th 2015 of 4m^2 of mirrors.<br /> Phase 2 - Prototype a: is the full scale product that we expect to deliver early 2016 after a crowdfunding campaign launched during the Villages des alternatives. This will be the Alpha prototype.<br /> <br /> The French ethercalc version of this work-in-progress product specification requirement is located [[https://www.ethercalc.org/osef_sc_specreq | here]] <br /> <br /> this document is part of the [[Product Document Requirement]]<br /> <br /> ====Introduction ====<br /> This is the module breakdown and the technical requirements of each module that will requested for the solar concentrator and its prove of concept.<br /> <br /> Added to this list of specific requirements, the general [[http://opensourceecology.org/wiki/OSE_Specifications_for_Product_Design | OSE Specification for product design ]] should be also applied during the conception and design.<br /> <br /> After conception and design are completed, a score will be attributed based on the [[<br /> http://opensourceecology.org/wiki/OSE_Specifications_Assessment_Template | Ose Specifications evaluation Template]] and its adherence to the below set of requirements.<br /> <br /> the discussions can be carried out on the [[http://forum.osefrance.org/viewforum.php?f=5 open forum]]<br /> <br /> ==== General ====<br /> [[http://forum.osefrance.org/viewforum.php?f=2| General on the Forum]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be DIY<br /> friendly (which gives advantage to the linear fresnel&lt;span style='display:<br /> none'&gt; reflector type of concentrator)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Linear fresnel<br /> reflector with double concentration CPC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;5KW heat power<br /> output (about 10m^2)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;10%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;able to reach<br /> more than 250øC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must allow<br /> (with additional modules) both N/S and E/W axis of i&lt;span style='display:<br /> none'&gt;nstallation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Structure ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=9| Structure on the Forum]] <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must support<br /> the whole Solar Concentrator system&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow<br /> mirrors rotation of 270ø with a complete reverse of t&lt;span style='display:<br /> none'&gt;he mirror in case of bad weather conditions&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;structure and<br /> design OSE Compatible http://opensourceecology.&lt;span style='display:none'&gt;org/wiki/OSE_Specifications_for_Product_Design&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Ground<br /> implantation must assure sufficient stability&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Sufficent<br /> rigidity to assure resistance to vibrations or impacts&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easily<br /> assembled with modular-easy to transport components&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easy optical<br /> alignment (assured by any mean - ie. Tracks, giudeli&lt;span style='display:<br /> none'&gt;nes, holes, etc)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mobile support<br /> of the mirrors to avoid deformation due to weig&lt;span style='display:none'&gt;ht,<br /> wind, vibrations, etc&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optionally<br /> without any weldering as much as possible&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=7 align=left style='height:15.0pt'&gt;optionally<br /> the concentrator and the absorber have indipendent structures (pro: less<br /> vibrations, cons: harder to align correctly)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=6 align=left style='height:15.0pt'&gt;Optionally,<br /> if N/S oriented, allow to move the mirrors toward south in order to allow<br /> seasonal optimization&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;with E/W axis,<br /> must allow 1*focal lenght of mirrors lenght more &lt;span style='display:none'&gt;than<br /> absorber on both W and E direction&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Optical Concentration ====<br /> [[http://forum.osefrance.org/viewforum.php?f=10 |Optical concentration]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=3 align=left style='height:15.0pt'&gt;Mirror's<br /> Geometry to be (to define based on best optical optimization, in progress)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors with<br /> high reflectivity (&amp;gt;90% on wide spectrum)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;resistant<br /> mirrors with high lifespan for external usage.&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors easy to<br /> clean&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Secondary<br /> concentration on the absorber higher than 2x&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;total factor of<br /> concentration 25&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;mirrors easy to<br /> fix and replace on their support&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Absorber ====<br /> [[http://forum.osefrance.org/viewforum.php?f=11| Absorber]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;specially<br /> designed for the selected thermal fluid, with passive o&lt;span<br /> style='display:none'&gt;r forced circulation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Absorbing<br /> material with high optical absorbtion rate on wide sp&lt;span style='display:<br /> none'&gt;ectrum&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;elevated<br /> thermal exchange Absorber / Fluid&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;high thermal<br /> insulation (from external air, from the point of con&lt;span style='display:<br /> none'&gt;tact with the structure, from IR radiations)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;High resistance<br /> of thermal variation constraints (high temperatu&lt;span style='display:none'&gt;re<br /> and valiration, high pressure and variation, thermal expansions and<br /> contractions)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Specially<br /> designed for the secondary concentrator&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Motors, Tracker, Programs ====<br /> [[http://forum.osefrance.org/viewforum.php?f=12| Motors,<br /> trackers, programs]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow for<br /> a real time follow &amp;amp; programmed sun follow base&lt;span style='display:none'&gt;d<br /> on Lat/long&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Automatically<br /> detect and self protect in case of bad weather&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> track the sun and send the correct angle in order&lt;span style='display:none'&gt;<br /> to optimize concentration&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> sense temperature and pressure at fluid input a&lt;span style='display:none'&gt;nd<br /> output&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;programmable to<br /> stop automatically&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must provide an<br /> easy GUI control interface (optionally handled t&lt;span style='display:none'&gt;hrough<br /> cloud, with data collection)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Modelling and studies ====<br /> [[http://forum.osefrance.org/viewforum.php?f=13| Modeling and studies]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optimisation of<br /> Solar concentrator design&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Self pilot of<br /> the solar concentrator (must perform a logical analy&lt;span style='display:<br /> none'&gt;sis of current solar concentrator of JB)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Tools to<br /> predict energetical production based on geography&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=4 align=left style='height:15.0pt'&gt;Model<br /> of economical and technical conditions for optimal usage of the solar<br /> concentrator&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Finalize<br /> localized business case&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Identify<br /> technical modifications needed to adapt to new usage&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;![if supportMisalignedColumns]&gt;<br /> &lt;tr height=0 style='display:none'&gt;<br /> &lt;/tr&gt;<br /> &lt;![endif]&gt;<br /> &lt;/table&gt;<br /> <br /> <br /> &lt;/HTML&gt;<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=126285 2015-02-23T16:01:43Z

<p>Andrea: /* Technical Requirements */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> <br /> ===== Technical Requirements =====<br /> Open Source Ecologie team (OSE French chapter) is researching and developping the linear fresnel reflector.<br /> the team want to hear from you on the se of technical requirements you would expect as output from the solar concentrator of this kind. the current work in progress is located [[http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english | here]]<br /> <br /> you can see 2 columns describing the level required at the 2 phases of the project, expressed in rate of achievement for the given line. <br /> <br /> Phase 1: the proof of concept is a &quot;demonstrateur&quot; that will be presented in the &quot;[[http://www.osefrance.fr/?p=147 | Villages des alternatives]]&quot; in Paris the September 26th 2015 of 4m^2 of mirrors.<br /> Phase 2: is the final full scale product that we expect to deliver early 2016 after a crowdfunding campaign launched during the Villages des alternatives.<br /> <br /> the French ethercalc version of this work-in-progress product specification requirement is located [[https://www.ethercalc.org/osef_sc_specreq | here]] <br /> <br /> this document is part of the [Product Document Requirement]<br /> <br /> ====Introduction ====<br /> This is the module breakdown and the technical requirements of each module that will requested for the solar concentrator and its prove of concept.<br /> <br /> Added to this list of specific requirements, the general [[http://opensourceecology.org/wiki/OSE_Specifications_for_Product_Design | OSE Specification for product design ]] should be also applied during the conception and design.<br /> <br /> After conception and design are completed, a score will be attributed based on the [[<br /> http://opensourceecology.org/wiki/OSE_Specifications_Assessment_Template | Ose Specifications evaluation Template]] and its adherence to the below set of requirements.<br /> <br /> the discussions can be carried out on the [[http://forum.osefrance.org/viewforum.php?f=5 open forum]]<br /> <br /> ==== General ====<br /> [[http://forum.osefrance.org/viewforum.php?f=2| General on the Forum]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be DIY<br /> friendly (which gives advantage to the linear fresnel&lt;span style='display:<br /> none'&gt; reflector type of concentrator)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Linear fresnel<br /> reflector with double concentration CPC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;5KW heat power<br /> output (about 10m^2)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;10%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;able to reach<br /> more than 250øC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must allow<br /> (with additional modules) both N/S and E/W axis of i&lt;span style='display:<br /> none'&gt;nstallation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Structure ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=9| Structure on the Forum]] <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must support<br /> the whole Solar Concentrator system&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow<br /> mirrors rotation of 270ø with a complete reverse of t&lt;span style='display:<br /> none'&gt;he mirror in case of bad weather conditions&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;structure and<br /> design OSE Compatible http://opensourceecology.&lt;span style='display:none'&gt;org/wiki/OSE_Specifications_for_Product_Design&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Ground<br /> implantation must assure sufficient stability&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Sufficent<br /> rigidity to assure resistance to vibrations or impacts&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easily<br /> assembled with modular-easy to transport components&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easy optical<br /> alignment (assured by any mean - ie. Tracks, giudeli&lt;span style='display:<br /> none'&gt;nes, holes, etc)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mobile support<br /> of the mirrors to avoid deformation due to weig&lt;span style='display:none'&gt;ht,<br /> wind, vibrations, etc&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optionally<br /> without any weldering as much as possible&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=7 align=left style='height:15.0pt'&gt;optionally<br /> the concentrator and the absorber have indipendent structures (pro: less<br /> vibrations, cons: harder to align correctly)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=6 align=left style='height:15.0pt'&gt;Optionally,<br /> if N/S oriented, allow to move the mirrors toward south in order to allow<br /> seasonal optimization&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;with E/W axis,<br /> must allow 1*focal lenght of mirrors lenght more &lt;span style='display:none'&gt;than<br /> absorber on both W and E direction&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Optical Concentration ====<br /> [[http://forum.osefrance.org/viewforum.php?f=10 |Optical concentration]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=3 align=left style='height:15.0pt'&gt;Mirror's<br /> Geometry to be (to define based on best optical optimization, in progress)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors with<br /> high reflectivity (&amp;gt;90% on wide spectrum)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;resistant<br /> mirrors with high lifespan for external usage.&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors easy to<br /> clean&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Secondary<br /> concentration on the absorber higher than 2x&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;total factor of<br /> concentration 25&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;mirrors easy to<br /> fix and replace on their support&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Absorber ====<br /> [[http://forum.osefrance.org/viewforum.php?f=11| Absorber]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;specially<br /> designed for the selected thermal fluid, with passive o&lt;span<br /> style='display:none'&gt;r forced circulation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Absorbing<br /> material with high optical absorbtion rate on wide sp&lt;span style='display:<br /> none'&gt;ectrum&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;elevated<br /> thermal exchange Absorber / Fluid&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;high thermal<br /> insulation (from external air, from the point of con&lt;span style='display:<br /> none'&gt;tact with the structure, from IR radiations)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;High resistance<br /> of thermal variation constraints (high temperatu&lt;span style='display:none'&gt;re<br /> and valiration, high pressure and variation, thermal expansions and<br /> contractions)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Specially<br /> designed for the secondary concentrator&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Motors, Tracker, Programs ====<br /> [[http://forum.osefrance.org/viewforum.php?f=12| Motors,<br /> trackers, programs]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow for<br /> a real time follow &amp;amp; programmed sun follow base&lt;span style='display:none'&gt;d<br /> on Lat/long&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Automatically<br /> detect and self protect in case of bad weather&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> track the sun and send the correct angle in order&lt;span style='display:none'&gt;<br /> to optimize concentration&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> sense temperature and pressure at fluid input a&lt;span style='display:none'&gt;nd<br /> output&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;programmable to<br /> stop automatically&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must provide an<br /> easy GUI control interface (optionally handled t&lt;span style='display:none'&gt;hrough<br /> cloud, with data collection)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Modelling and studies ====<br /> [[http://forum.osefrance.org/viewforum.php?f=13| Modeling and studies]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optimisation of<br /> Solar concentrator design&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Self pilot of<br /> the solar concentrator (must perform a logical analy&lt;span style='display:<br /> none'&gt;sis of current solar concentrator of JB)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Tools to<br /> predict energetical production based on geography&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=4 align=left style='height:15.0pt'&gt;Model<br /> of economical and technical conditions for optimal usage of the solar<br /> concentrator&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Finalize<br /> localized business case&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Identify<br /> technical modifications needed to adapt to new usage&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;![if supportMisalignedColumns]&gt;<br /> &lt;tr height=0 style='display:none'&gt;<br /> &lt;/tr&gt;<br /> &lt;![endif]&gt;<br /> &lt;/table&gt;<br /> <br /> <br /> &lt;/HTML&gt;<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=126284 2015-02-23T15:51:19Z

<p>Andrea: /* Technical Requirements */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> <br /> ===== Technical Requirements =====<br /> this page is the work in progress of the technical requirements we want to satisfy with the final solar concentrator.<br /> as reference there we report the acceptable level of the &quot;proof of concept&quot; demonstrateur that will be presented in the &quot;[[http://www.osefrance.fr/?p=147 | Villages des alternatives]]&quot; in Paris the September 26th 2015.<br /> the French ethercalc version is located [[https://www.ethercalc.org/osef_sc_specreq | here]]<br /> <br /> ====Introduction ====<br /> This is the module breakdown and the technical requirements of each module that will requested for the solar concentrator and its prove of concept.<br /> <br /> Added to this list of specific requirements, the general [[http://opensourceecology.org/wiki/OSE_Specifications_for_Product_Design | OSE Specification for product design ]] should be also applied during the conception and design.<br /> <br /> After conception and design are completed, a score will be attributed based on the [[<br /> http://opensourceecology.org/wiki/OSE_Specifications_Assessment_Template | Ose Specifications evaluation Template]] and its adherence to the below set of requirements.<br /> <br /> the discussions can be carried out on the [[http://forum.osefrance.org/viewforum.php?f=5 open forum]]<br /> <br /> ==== General ====<br /> [[http://forum.osefrance.org/viewforum.php?f=2| General on the Forum]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be DIY<br /> friendly (which gives advantage to the linear fresnel&lt;span style='display:<br /> none'&gt; reflector type of concentrator)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Linear fresnel<br /> reflector with double concentration CPC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;5KW heat power<br /> output (about 10m^2)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;10%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;able to reach<br /> more than 250øC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must allow<br /> (with additional modules) both N/S and E/W axis of i&lt;span style='display:<br /> none'&gt;nstallation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Structure ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=9| Structure on the Forum]] <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must support<br /> the whole Solar Concentrator system&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow<br /> mirrors rotation of 270ø with a complete reverse of t&lt;span style='display:<br /> none'&gt;he mirror in case of bad weather conditions&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;structure and<br /> design OSE Compatible http://opensourceecology.&lt;span style='display:none'&gt;org/wiki/OSE_Specifications_for_Product_Design&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Ground<br /> implantation must assure sufficient stability&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Sufficent<br /> rigidity to assure resistance to vibrations or impacts&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easily<br /> assembled with modular-easy to transport components&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easy optical<br /> alignment (assured by any mean - ie. Tracks, giudeli&lt;span style='display:<br /> none'&gt;nes, holes, etc)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mobile support<br /> of the mirrors to avoid deformation due to weig&lt;span style='display:none'&gt;ht,<br /> wind, vibrations, etc&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optionally<br /> without any weldering as much as possible&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=7 align=left style='height:15.0pt'&gt;optionally<br /> the concentrator and the absorber have indipendent structures (pro: less<br /> vibrations, cons: harder to align correctly)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=6 align=left style='height:15.0pt'&gt;Optionally,<br /> if N/S oriented, allow to move the mirrors toward south in order to allow<br /> seasonal optimization&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;with E/W axis,<br /> must allow 1*focal lenght of mirrors lenght more &lt;span style='display:none'&gt;than<br /> absorber on both W and E direction&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Optical Concentration ====<br /> [[http://forum.osefrance.org/viewforum.php?f=10 |Optical concentration]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=3 align=left style='height:15.0pt'&gt;Mirror's<br /> Geometry to be (to define based on best optical optimization, in progress)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors with<br /> high reflectivity (&amp;gt;90% on wide spectrum)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;resistant<br /> mirrors with high lifespan for external usage.&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors easy to<br /> clean&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Secondary<br /> concentration on the absorber higher than 2x&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;total factor of<br /> concentration 25&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;mirrors easy to<br /> fix and replace on their support&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Absorber ====<br /> [[http://forum.osefrance.org/viewforum.php?f=11| Absorber]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;specially<br /> designed for the selected thermal fluid, with passive o&lt;span<br /> style='display:none'&gt;r forced circulation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Absorbing<br /> material with high optical absorbtion rate on wide sp&lt;span style='display:<br /> none'&gt;ectrum&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;elevated<br /> thermal exchange Absorber / Fluid&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;high thermal<br /> insulation (from external air, from the point of con&lt;span style='display:<br /> none'&gt;tact with the structure, from IR radiations)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;High resistance<br /> of thermal variation constraints (high temperatu&lt;span style='display:none'&gt;re<br /> and valiration, high pressure and variation, thermal expansions and<br /> contractions)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Specially<br /> designed for the secondary concentrator&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Motors, Tracker, Programs ====<br /> [[http://forum.osefrance.org/viewforum.php?f=12| Motors,<br /> trackers, programs]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow for<br /> a real time follow &amp;amp; programmed sun follow base&lt;span style='display:none'&gt;d<br /> on Lat/long&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Automatically<br /> detect and self protect in case of bad weather&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> track the sun and send the correct angle in order&lt;span style='display:none'&gt;<br /> to optimize concentration&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> sense temperature and pressure at fluid input a&lt;span style='display:none'&gt;nd<br /> output&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;programmable to<br /> stop automatically&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must provide an<br /> easy GUI control interface (optionally handled t&lt;span style='display:none'&gt;hrough<br /> cloud, with data collection)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Modelling and studies ====<br /> [[http://forum.osefrance.org/viewforum.php?f=13| Modeling and studies]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optimisation of<br /> Solar concentrator design&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Self pilot of<br /> the solar concentrator (must perform a logical analy&lt;span style='display:<br /> none'&gt;sis of current solar concentrator of JB)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Tools to<br /> predict energetical production based on geography&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=4 align=left style='height:15.0pt'&gt;Model<br /> of economical and technical conditions for optimal usage of the solar<br /> concentrator&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Finalize<br /> localized business case&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Identify<br /> technical modifications needed to adapt to new usage&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;![if supportMisalignedColumns]&gt;<br /> &lt;tr height=0 style='display:none'&gt;<br /> &lt;/tr&gt;<br /> &lt;![endif]&gt;<br /> &lt;/table&gt;<br /> <br /> <br /> &lt;/HTML&gt;<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=126283 2015-02-23T15:51:03Z

<p>Andrea: Undo revision 126282 by Andrea (talk)</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> <br /> ====== Technical Requirements ======<br /> this page is the work in progress of the technical requirements we want to satisfy with the final solar concentrator.<br /> as reference there we report the acceptable level of the &quot;proof of concept&quot; demonstrateur that will be presented in the &quot;[[http://www.osefrance.fr/?p=147 | Villages des alternatives]]&quot; in Paris the September 26th 2015.<br /> the French ethercalc version is located [[https://www.ethercalc.org/osef_sc_specreq | here]] <br /> <br /> ====Introduction ====<br /> This is the module breakdown and the technical requirements of each module that will requested for the solar concentrator and its prove of concept.<br /> <br /> Added to this list of specific requirements, the general [[http://opensourceecology.org/wiki/OSE_Specifications_for_Product_Design | OSE Specification for product design ]] should be also applied during the conception and design.<br /> <br /> After conception and design are completed, a score will be attributed based on the [[<br /> http://opensourceecology.org/wiki/OSE_Specifications_Assessment_Template | Ose Specifications evaluation Template]] and its adherence to the below set of requirements.<br /> <br /> the discussions can be carried out on the [[http://forum.osefrance.org/viewforum.php?f=5 open forum]]<br /> <br /> ==== General ====<br /> [[http://forum.osefrance.org/viewforum.php?f=2| General on the Forum]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be DIY<br /> friendly (which gives advantage to the linear fresnel&lt;span style='display:<br /> none'&gt; reflector type of concentrator)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Linear fresnel<br /> reflector with double concentration CPC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;5KW heat power<br /> output (about 10m^2)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;10%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;able to reach<br /> more than 250øC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must allow<br /> (with additional modules) both N/S and E/W axis of i&lt;span style='display:<br /> none'&gt;nstallation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Structure ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=9| Structure on the Forum]] <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must support<br /> the whole Solar Concentrator system&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow<br /> mirrors rotation of 270ø with a complete reverse of t&lt;span style='display:<br /> none'&gt;he mirror in case of bad weather conditions&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;structure and<br /> design OSE Compatible http://opensourceecology.&lt;span style='display:none'&gt;org/wiki/OSE_Specifications_for_Product_Design&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Ground<br /> implantation must assure sufficient stability&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Sufficent<br /> rigidity to assure resistance to vibrations or impacts&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easily<br /> assembled with modular-easy to transport components&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easy optical<br /> alignment (assured by any mean - ie. Tracks, giudeli&lt;span style='display:<br /> none'&gt;nes, holes, etc)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mobile support<br /> of the mirrors to avoid deformation due to weig&lt;span style='display:none'&gt;ht,<br /> wind, vibrations, etc&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optionally<br /> without any weldering as much as possible&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=7 align=left style='height:15.0pt'&gt;optionally<br /> the concentrator and the absorber have indipendent structures (pro: less<br /> vibrations, cons: harder to align correctly)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=6 align=left style='height:15.0pt'&gt;Optionally,<br /> if N/S oriented, allow to move the mirrors toward south in order to allow<br /> seasonal optimization&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;with E/W axis,<br /> must allow 1*focal lenght of mirrors lenght more &lt;span style='display:none'&gt;than<br /> absorber on both W and E direction&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Optical Concentration ====<br /> [[http://forum.osefrance.org/viewforum.php?f=10 |Optical concentration]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=3 align=left style='height:15.0pt'&gt;Mirror's<br /> Geometry to be (to define based on best optical optimization, in progress)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors with<br /> high reflectivity (&amp;gt;90% on wide spectrum)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;resistant<br /> mirrors with high lifespan for external usage.&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors easy to<br /> clean&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Secondary<br /> concentration on the absorber higher than 2x&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;total factor of<br /> concentration 25&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;mirrors easy to<br /> fix and replace on their support&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Absorber ====<br /> [[http://forum.osefrance.org/viewforum.php?f=11| Absorber]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;specially<br /> designed for the selected thermal fluid, with passive o&lt;span<br /> style='display:none'&gt;r forced circulation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Absorbing<br /> material with high optical absorbtion rate on wide sp&lt;span style='display:<br /> none'&gt;ectrum&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;elevated<br /> thermal exchange Absorber / Fluid&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;high thermal<br /> insulation (from external air, from the point of con&lt;span style='display:<br /> none'&gt;tact with the structure, from IR radiations)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;High resistance<br /> of thermal variation constraints (high temperatu&lt;span style='display:none'&gt;re<br /> and valiration, high pressure and variation, thermal expansions and<br /> contractions)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Specially<br /> designed for the secondary concentrator&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Motors, Tracker, Programs ====<br /> [[http://forum.osefrance.org/viewforum.php?f=12| Motors,<br /> trackers, programs]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow for<br /> a real time follow &amp;amp; programmed sun follow base&lt;span style='display:none'&gt;d<br /> on Lat/long&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Automatically<br /> detect and self protect in case of bad weather&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> track the sun and send the correct angle in order&lt;span style='display:none'&gt;<br /> to optimize concentration&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> sense temperature and pressure at fluid input a&lt;span style='display:none'&gt;nd<br /> output&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;programmable to<br /> stop automatically&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must provide an<br /> easy GUI control interface (optionally handled t&lt;span style='display:none'&gt;hrough<br /> cloud, with data collection)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Modelling and studies ====<br /> [[http://forum.osefrance.org/viewforum.php?f=13| Modeling and studies]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optimisation of<br /> Solar concentrator design&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Self pilot of<br /> the solar concentrator (must perform a logical analy&lt;span style='display:<br /> none'&gt;sis of current solar concentrator of JB)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Tools to<br /> predict energetical production based on geography&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=4 align=left style='height:15.0pt'&gt;Model<br /> of economical and technical conditions for optimal usage of the solar<br /> concentrator&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Finalize<br /> localized business case&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Identify<br /> technical modifications needed to adapt to new usage&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;![if supportMisalignedColumns]&gt;<br /> &lt;tr height=0 style='display:none'&gt;<br /> &lt;/tr&gt;<br /> &lt;![endif]&gt;<br /> &lt;/table&gt;<br /> <br /> <br /> &lt;/HTML&gt;<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=126282 2015-02-23T15:49:47Z

<p>Andrea: /* Technical Requirements */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> <br /> <br /> ===== Technical Requirements =====<br /> this page is the work in progress of the technical requirements we want to satisfy with the final solar concentrator.<br /> as reference there we report the acceptable level of the &quot;proof of concept&quot; demonstrateur that will be presented in the &quot;[[http://www.osefrance.fr/?p=147 | Villages des alternatives]]&quot; in Paris the September 26th 2015.<br /> the French ethercalc version is located [[https://www.ethercalc.org/osef_sc_specreq | here]] <br /> <br /> ====Introduction ====<br /> This is the module breakdown and the technical requirements of each module that will requested for the solar concentrator and its prove of concept.<br /> <br /> Added to this list of specific requirements, the general [[http://opensourceecology.org/wiki/OSE_Specifications_for_Product_Design | OSE Specification for product design ]] should be also applied during the conception and design.<br /> <br /> After conception and design are completed, a score will be attributed based on the [[<br /> http://opensourceecology.org/wiki/OSE_Specifications_Assessment_Template | Ose Specifications evaluation Template]] and its adherence to the below set of requirements.<br /> <br /> the discussions can be carried out on the [[http://forum.osefrance.org/viewforum.php?f=5 open forum]]<br /> <br /> ==== General ====<br /> [[http://forum.osefrance.org/viewforum.php?f=2| General on the Forum]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be DIY<br /> friendly (which gives advantage to the linear fresnel&lt;span style='display:<br /> none'&gt; reflector type of concentrator)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Linear fresnel<br /> reflector with double concentration CPC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;5KW heat power<br /> output (about 10m^2)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;10%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;able to reach<br /> more than 250øC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must allow<br /> (with additional modules) both N/S and E/W axis of i&lt;span style='display:<br /> none'&gt;nstallation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Structure ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=9| Structure on the Forum]] <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must support<br /> the whole Solar Concentrator system&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow<br /> mirrors rotation of 270ø with a complete reverse of t&lt;span style='display:<br /> none'&gt;he mirror in case of bad weather conditions&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;structure and<br /> design OSE Compatible http://opensourceecology.&lt;span style='display:none'&gt;org/wiki/OSE_Specifications_for_Product_Design&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Ground<br /> implantation must assure sufficient stability&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Sufficent<br /> rigidity to assure resistance to vibrations or impacts&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easily<br /> assembled with modular-easy to transport components&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easy optical<br /> alignment (assured by any mean - ie. Tracks, giudeli&lt;span style='display:<br /> none'&gt;nes, holes, etc)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mobile support<br /> of the mirrors to avoid deformation due to weig&lt;span style='display:none'&gt;ht,<br /> wind, vibrations, etc&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optionally<br /> without any weldering as much as possible&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=7 align=left style='height:15.0pt'&gt;optionally<br /> the concentrator and the absorber have indipendent structures (pro: less<br /> vibrations, cons: harder to align correctly)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=6 align=left style='height:15.0pt'&gt;Optionally,<br /> if N/S oriented, allow to move the mirrors toward south in order to allow<br /> seasonal optimization&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;with E/W axis,<br /> must allow 1*focal lenght of mirrors lenght more &lt;span style='display:none'&gt;than<br /> absorber on both W and E direction&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Optical Concentration ====<br /> [[http://forum.osefrance.org/viewforum.php?f=10 |Optical concentration]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=3 align=left style='height:15.0pt'&gt;Mirror's<br /> Geometry to be (to define based on best optical optimization, in progress)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors with<br /> high reflectivity (&amp;gt;90% on wide spectrum)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;resistant<br /> mirrors with high lifespan for external usage.&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors easy to<br /> clean&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Secondary<br /> concentration on the absorber higher than 2x&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;total factor of<br /> concentration 25&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;mirrors easy to<br /> fix and replace on their support&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Absorber ====<br /> [[http://forum.osefrance.org/viewforum.php?f=11| Absorber]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;specially<br /> designed for the selected thermal fluid, with passive o&lt;span<br /> style='display:none'&gt;r forced circulation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Absorbing<br /> material with high optical absorbtion rate on wide sp&lt;span style='display:<br /> none'&gt;ectrum&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;elevated<br /> thermal exchange Absorber / Fluid&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;high thermal<br /> insulation (from external air, from the point of con&lt;span style='display:<br /> none'&gt;tact with the structure, from IR radiations)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;High resistance<br /> of thermal variation constraints (high temperatu&lt;span style='display:none'&gt;re<br /> and valiration, high pressure and variation, thermal expansions and<br /> contractions)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Specially<br /> designed for the secondary concentrator&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Motors, Tracker, Programs ====<br /> [[http://forum.osefrance.org/viewforum.php?f=12| Motors, trackers, programs]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow for<br /> a real time follow &amp;amp; programmed sun follow base&lt;span style='display:none'&gt;d<br /> on Lat/long&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Automatically<br /> detect and self protect in case of bad weather&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> track the sun and send the correct angle in order&lt;span style='display:none'&gt;<br /> to optimize concentration&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> sense temperature and pressure at fluid input a&lt;span style='display:none'&gt;nd<br /> output&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;programmable to<br /> stop automatically&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must provide an<br /> easy GUI control interface (optionally handled t&lt;span style='display:none'&gt;hrough<br /> cloud, with data collection)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Modelling and studies ====<br /> [[http://forum.osefrance.org/viewforum.php?f=13| Modeling and studies]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optimisation of<br /> Solar concentrator design&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Self pilot of<br /> the solar concentrator (must perform a logical analy&lt;span style='display:<br /> none'&gt;sis of current solar concentrator of JB)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Tools to<br /> predict energetical production based on geography&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=4 align=left style='height:15.0pt'&gt;Model<br /> of economical and technical conditions for optimal usage of the solar<br /> concentrator&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Finalize<br /> localized business case&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Identify<br /> technical modifications needed to adapt to new usage&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;![if supportMisalignedColumns]&gt;<br /> &lt;tr height=0 style='display:none'&gt;<br /> &lt;/tr&gt;<br /> &lt;![endif]&gt;<br /> &lt;/table&gt;<br /> <br /> <br /> &lt;/HTML&gt;<br /> <br /> ====Introduction ====<br /> This is the module breakdown and the technical requirements of each module that will requested for the solar concentrator and its prove of concept.<br /> <br /> Added to this list of specific requirements, the general [[http://opensourceecology.org/wiki/OSE_Specifications_for_Product_Design | OSE Specification for product design ]] should be also applied during the conception and design.<br /> <br /> After conception and design are completed, a score will be attributed based on the [[<br /> http://opensourceecology.org/wiki/OSE_Specifications_Assessment_Template | Ose Specifications evaluation Template]] and its adherence to the below set of requirements.<br /> <br /> the discussions can be carried out on the [[http://forum.osefrance.org/viewforum.php?f=5 open forum]]<br /> <br /> ==== General ====<br /> [[http://forum.osefrance.org/viewforum.php?f=2| General on the Forum]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be DIY<br /> friendly (which gives advantage to the linear fresnel&lt;span style='display:<br /> none'&gt; reflector type of concentrator)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Linear fresnel<br /> reflector with double concentration CPC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;5KW heat power<br /> output (about 10m^2)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;10%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;able to reach<br /> more than 250øC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must allow<br /> (with additional modules) both N/S and E/W axis of i&lt;span style='display:<br /> none'&gt;nstallation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Structure ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=9| Structure on the Forum]] <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must support<br /> the whole Solar Concentrator system&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow<br /> mirrors rotation of 270ø with a complete reverse of t&lt;span style='display:<br /> none'&gt;he mirror in case of bad weather conditions&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;structure and<br /> design OSE Compatible http://opensourceecology.&lt;span style='display:none'&gt;org/wiki/OSE_Specifications_for_Product_Design&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Ground<br /> implantation must assure sufficient stability&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Sufficent<br /> rigidity to assure resistance to vibrations or impacts&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easily<br /> assembled with modular-easy to transport components&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easy optical<br /> alignment (assured by any mean - ie. Tracks, giudeli&lt;span style='display:<br /> none'&gt;nes, holes, etc)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mobile support<br /> of the mirrors to avoid deformation due to weig&lt;span style='display:none'&gt;ht,<br /> wind, vibrations, etc&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optionally<br /> without any weldering as much as possible&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=7 align=left style='height:15.0pt'&gt;optionally<br /> the concentrator and the absorber have indipendent structures (pro: less<br /> vibrations, cons: harder to align correctly)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=6 align=left style='height:15.0pt'&gt;Optionally,<br /> if N/S oriented, allow to move the mirrors toward south in order to allow<br /> seasonal optimization&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;with E/W axis,<br /> must allow 1*focal lenght of mirrors lenght more &lt;span style='display:none'&gt;than<br /> absorber on both W and E direction&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Optical Concentration ====<br /> [[http://forum.osefrance.org/viewforum.php?f=10 |Optical concentration]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=3 align=left style='height:15.0pt'&gt;Mirror's<br /> Geometry to be (to define based on best optical optimization, in progress)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors with<br /> high reflectivity (&amp;gt;90% on wide spectrum)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;resistant<br /> mirrors with high lifespan for external usage.&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors easy to<br /> clean&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Secondary<br /> concentration on the absorber higher than 2x&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;total factor of<br /> concentration 25&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;mirrors easy to<br /> fix and replace on their support&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Absorber ====<br /> [[http://forum.osefrance.org/viewforum.php?f=11| Absorber]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;specially<br /> designed for the selected thermal fluid, with passive o&lt;span<br /> style='display:none'&gt;r forced circulation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Absorbing<br /> material with high optical absorbtion rate on wide sp&lt;span style='display:<br /> none'&gt;ectrum&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;elevated<br /> thermal exchange Absorber / Fluid&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;high thermal<br /> insulation (from external air, from the point of con&lt;span style='display:<br /> none'&gt;tact with the structure, from IR radiations)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;High resistance<br /> of thermal variation constraints (high temperatu&lt;span style='display:none'&gt;re<br /> and valiration, high pressure and variation, thermal expansions and<br /> contractions)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Specially<br /> designed for the secondary concentrator&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Motors, Tracker, Programs ====<br /> [[http://forum.osefrance.org/viewforum.php?f=12| Motors,<br /> trackers, programs]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow for<br /> a real time follow &amp;amp; programmed sun follow base&lt;span style='display:none'&gt;d<br /> on Lat/long&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Automatically<br /> detect and self protect in case of bad weather&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> track the sun and send the correct angle in order&lt;span style='display:none'&gt;<br /> to optimize concentration&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> sense temperature and pressure at fluid input a&lt;span style='display:none'&gt;nd<br /> output&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;programmable to<br /> stop automatically&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must provide an<br /> easy GUI control interface (optionally handled t&lt;span style='display:none'&gt;hrough<br /> cloud, with data collection)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Modelling and studies ====<br /> [[http://forum.osefrance.org/viewforum.php?f=13| Modeling and studies]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optimisation of<br /> Solar concentrator design&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Self pilot of<br /> the solar concentrator (must perform a logical analy&lt;span style='display:<br /> none'&gt;sis of current solar concentrator of JB)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Tools to<br /> predict energetical production based on geography&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=4 align=left style='height:15.0pt'&gt;Model<br /> of economical and technical conditions for optimal usage of the solar<br /> concentrator&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Finalize<br /> localized business case&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Identify<br /> technical modifications needed to adapt to new usage&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;![if supportMisalignedColumns]&gt;<br /> &lt;tr height=0 style='display:none'&gt;<br /> &lt;/tr&gt;<br /> &lt;![endif]&gt;<br /> &lt;/table&gt;<br /> <br /> <br /> &lt;/HTML&gt;<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=126281 2015-02-23T15:47:21Z

<p>Andrea: /* OSE Technical Requirements */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> <br /> ====== Technical Requirements ======<br /> this page is the work in progress of the technical requirements we want to satisfy with the final solar concentrator.<br /> as reference there we report the acceptable level of the &quot;proof of concept&quot; demonstrateur that will be presented in the &quot;[[http://www.osefrance.fr/?p=147 | Villages des alternatives]]&quot; in Paris the September 26th 2015.<br /> the French ethercalc version is located [[https://www.ethercalc.org/osef_sc_specreq | here]] <br /> <br /> ====Introduction ====<br /> This is the module breakdown and the technical requirements of each module that will requested for the solar concentrator and its prove of concept.<br /> <br /> Added to this list of specific requirements, the general [[http://opensourceecology.org/wiki/OSE_Specifications_for_Product_Design | OSE Specification for product design ]] should be also applied during the conception and design.<br /> <br /> After conception and design are completed, a score will be attributed based on the [[<br /> http://opensourceecology.org/wiki/OSE_Specifications_Assessment_Template | Ose Specifications evaluation Template]] and its adherence to the below set of requirements.<br /> <br /> the discussions can be carried out on the [[http://forum.osefrance.org/viewforum.php?f=5 open forum]]<br /> <br /> ==== General ====<br /> [[http://forum.osefrance.org/viewforum.php?f=2| General on the Forum]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be DIY<br /> friendly (which gives advantage to the linear fresnel&lt;span style='display:<br /> none'&gt; reflector type of concentrator)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Linear fresnel<br /> reflector with double concentration CPC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;5KW heat power<br /> output (about 10m^2)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;10%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;able to reach<br /> more than 250øC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must allow<br /> (with additional modules) both N/S and E/W axis of i&lt;span style='display:<br /> none'&gt;nstallation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Structure ====<br /> <br /> [[http://forum.osefrance.org/viewforum.php?f=9| Structure on the Forum]] <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must support<br /> the whole Solar Concentrator system&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow<br /> mirrors rotation of 270ø with a complete reverse of t&lt;span style='display:<br /> none'&gt;he mirror in case of bad weather conditions&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;structure and<br /> design OSE Compatible http://opensourceecology.&lt;span style='display:none'&gt;org/wiki/OSE_Specifications_for_Product_Design&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Ground<br /> implantation must assure sufficient stability&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Sufficent<br /> rigidity to assure resistance to vibrations or impacts&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easily<br /> assembled with modular-easy to transport components&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easy optical<br /> alignment (assured by any mean - ie. Tracks, giudeli&lt;span style='display:<br /> none'&gt;nes, holes, etc)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mobile support<br /> of the mirrors to avoid deformation due to weig&lt;span style='display:none'&gt;ht,<br /> wind, vibrations, etc&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optionally<br /> without any weldering as much as possible&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=7 align=left style='height:15.0pt'&gt;optionally<br /> the concentrator and the absorber have indipendent structures (pro: less<br /> vibrations, cons: harder to align correctly)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=6 align=left style='height:15.0pt'&gt;Optionally,<br /> if N/S oriented, allow to move the mirrors toward south in order to allow<br /> seasonal optimization&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;with E/W axis,<br /> must allow 1*focal lenght of mirrors lenght more &lt;span style='display:none'&gt;than<br /> absorber on both W and E direction&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Optical Concentration ====<br /> [[http://forum.osefrance.org/viewforum.php?f=10 |Optical concentration]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=3 align=left style='height:15.0pt'&gt;Mirror's<br /> Geometry to be (to define based on best optical optimization, in progress)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors with<br /> high reflectivity (&amp;gt;90% on wide spectrum)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;resistant<br /> mirrors with high lifespan for external usage.&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors easy to<br /> clean&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Secondary<br /> concentration on the absorber higher than 2x&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;total factor of<br /> concentration 25&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;mirrors easy to<br /> fix and replace on their support&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Absorber ====<br /> [[http://forum.osefrance.org/viewforum.php?f=11| Absorber]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;specially<br /> designed for the selected thermal fluid, with passive o&lt;span<br /> style='display:none'&gt;r forced circulation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Absorbing<br /> material with high optical absorbtion rate on wide sp&lt;span style='display:<br /> none'&gt;ectrum&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;elevated<br /> thermal exchange Absorber / Fluid&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;high thermal<br /> insulation (from external air, from the point of con&lt;span style='display:<br /> none'&gt;tact with the structure, from IR radiations)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;High resistance<br /> of thermal variation constraints (high temperatu&lt;span style='display:none'&gt;re<br /> and valiration, high pressure and variation, thermal expansions and<br /> contractions)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Specially<br /> designed for the secondary concentrator&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Motors, Tracker, Programs ====<br /> [[http://forum.osefrance.org/viewforum.php?f=12| Motors,<br /> trackers, programs]]<br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow for<br /> a real time follow &amp;amp; programmed sun follow base&lt;span style='display:none'&gt;d<br /> on Lat/long&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Automatically<br /> detect and self protect in case of bad weather&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> track the sun and send the correct angle in order&lt;span style='display:none'&gt;<br /> to optimize concentration&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> sense temperature and pressure at fluid input a&lt;span style='display:none'&gt;nd<br /> output&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;programmable to<br /> stop automatically&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must provide an<br /> easy GUI control interface (optionally handled t&lt;span style='display:none'&gt;hrough<br /> cloud, with data collection)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/HTML&gt;<br /> <br /> ==== Modelling and studies ====<br /> [[http://forum.osefrance.org/viewforum.php?f=13| Modeling and studies]]<br /> <br /> &lt;HTML&gt;<br /> &lt;table&gt;<br /> <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optimisation of<br /> Solar concentrator design&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Self pilot of<br /> the solar concentrator (must perform a logical analy&lt;span style='display:<br /> none'&gt;sis of current solar concentrator of JB)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Tools to<br /> predict energetical production based on geography&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=4 align=left style='height:15.0pt'&gt;Model<br /> of economical and technical conditions for optimal usage of the solar<br /> concentrator&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Finalize<br /> localized business case&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Identify<br /> technical modifications needed to adapt to new usage&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;![if supportMisalignedColumns]&gt;<br /> &lt;tr height=0 style='display:none'&gt;<br /> &lt;/tr&gt;<br /> &lt;![endif]&gt;<br /> &lt;/table&gt;<br /> <br /> <br /> &lt;/HTML&gt;<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=126100 2015-02-17T00:19:09Z

<p>Andrea: /* OSE Technical Requirements */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =OSE Technical Requirements=<br /> as Open Source Ecologie team (OSE French chapter) is moving forward developping the linear fresnel reflector is developing and request for your participation the complete set of technical requirements. the current work in progress is located [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english here]<br /> <br /> <br /> &lt;HTML&gt;<br /> &lt;table border=0 cellpadding=0 cellspacing=0 width=911 style='border-collapse:<br /> collapse;table-layout:fixed;width:683pt'&gt;<br /> &lt;col width=399 style='mso-width-source:userset;mso-width-alt:14592;width:299pt'&gt;<br /> &lt;col width=64 span=8 style='width:48pt'&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=2 align=left width=463 style='height:<br /> 15.0pt;width:347pt'&gt;Module breakdown for solar concentrator and its prove of<br /> concept.&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Added to OSE<br /> Specification for product design and more specific&lt;span style='display:none'&gt;ally<br /> applied to the solar concentrator:&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl151189 colspan=8 align=left&gt;http://opensourceecology.org/wiki/OSE_Specifications_for_Product_Design&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;A score will be<br /> attributed on the designes based on the Ose Spe&lt;span style='display:none'&gt;cifications<br /> evaluation Template&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl151189 colspan=8 align=left&gt;http://opensourceecology.org/wiki/OSE_Specifications_Assessment_Template&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl641189 align=left style='height:15.0pt'&gt;General&lt;/td&gt;<br /> &lt;/tr&gt; <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be DIY<br /> friendly (which gives advantage to the linear fresnel&lt;span style='display:<br /> none'&gt; reflector type of concentrator)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Linear fresnel<br /> reflector with double concentration CPC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;5KW heat power<br /> output (about 10m^2)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;10%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;able to reach<br /> more than 250øC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must allow<br /> (with additional modules) both N/S and E/W axis of i&lt;span style='display:<br /> none'&gt;nstallation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl641189 align=left style='height:15.0pt'&gt;Structure&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must support<br /> the whole Solar Concentrator system&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow<br /> mirrors rotation of 270ø with a complete reverse of t&lt;span style='display:<br /> none'&gt;he mirror in case of bad weather conditions&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;structure and<br /> design OSE Compatible http://opensourceecology.&lt;span style='display:none'&gt;org/wiki/OSE_Specifications_for_Product_Design&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Ground<br /> implantation must assure sufficient stability&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Sufficent<br /> rigidity to assure resistance to vibrations or impacts&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easily<br /> assembled with modular-easy to transport components&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easy optical<br /> alignment (assured by any mean - ie. Tracks, giudeli&lt;span style='display:<br /> none'&gt;nes, holes, etc)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mobile support<br /> of the mirrors to avoid deformation due to weig&lt;span style='display:none'&gt;ht,<br /> wind, vibrations, etc&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optionally<br /> without any weldering as much as possible&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=7 align=left style='height:15.0pt'&gt;optionally<br /> the concentrator and the absorber have indipendent structures (pro: less<br /> vibrations, cons: harder to align correctly)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=6 align=left style='height:15.0pt'&gt;Optionally,<br /> if N/S oriented, allow to move the mirrors toward south in order to allow<br /> seasonal optimization&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;with E/W axis,<br /> must allow 1*focal lenght of mirrors lenght more &lt;span style='display:none'&gt;than<br /> absorber on both W and E direction&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl641189 align=left style='height:15.0pt'&gt;Optical<br /> concentration&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=3 align=left style='height:15.0pt'&gt;Mirror's<br /> Geometry to be (to define based on best optical optimization, in progress)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors with<br /> high reflectivity (&amp;gt;90% on wide spectrum)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;resistant<br /> mirrors with high lifespan for external usage.&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors easy to<br /> clean&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Secondary<br /> concentration on the absorber higher than 2x&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;total factor of<br /> concentration 25&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;mirrors easy to<br /> fix and replace on their support&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl641189 align=left style='height:15.0pt'&gt;Absorber&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;specially<br /> designed for the selected thermal fluid, with passive o&lt;span<br /> style='display:none'&gt;r forced circulation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Absorbing<br /> material with high optical absorbtion rate on wide sp&lt;span style='display:<br /> none'&gt;ectrum&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;elevated<br /> thermal exchange Absorber / Fluid&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;high thermal<br /> insulation (from external air, from the point of con&lt;span style='display:<br /> none'&gt;tact with the structure, from IR radiations)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;High resistance<br /> of thermal variation constraints (high temperatu&lt;span style='display:none'&gt;re<br /> and valiration, high pressure and variation, thermal expansions and<br /> contractions)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Specially<br /> designed for the secondary concentrator&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl641189 align=left style='height:15.0pt'&gt;Motors,<br /> trackers, programs&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow for<br /> a real time follow &amp;amp; programmed sun follow base&lt;span style='display:none'&gt;d<br /> on Lat/long&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Automatically<br /> detect and self protect in case of bad weather&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> track the sun and send the correct angle in order&lt;span style='display:none'&gt;<br /> to optimize concentration&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> sense temperature and pressure at fluid input a&lt;span style='display:none'&gt;nd<br /> output&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;programmable to<br /> stop automatically&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must provide an<br /> easy GUI control interface (optionally handled t&lt;span style='display:none'&gt;hrough<br /> cloud, with data collection)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl641189 align=left style='height:15.0pt'&gt;Modeling and<br /> studies&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optimisation of<br /> Solar concentrator design&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Self pilot of<br /> the solar concentrator (must perform a logical analy&lt;span style='display:<br /> none'&gt;sis of current solar concentrator of JB)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Tools to<br /> predict energetical production based on geography&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=4 align=left style='height:15.0pt'&gt;Model<br /> of economical and technical conditions for optimal usage of the solar<br /> concentrator&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Finalize<br /> localized business case&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Identify<br /> technical modifications needed to adapt to new usage&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;![if supportMisalignedColumns]&gt;<br /> &lt;tr height=0 style='display:none'&gt;<br /> &lt;/tr&gt;<br /> &lt;![endif]&gt;<br /> &lt;/table&gt;<br /> <br /> <br /> &lt;/HTML&gt;<br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Linear_Fresnel_Solar_Concentrator&diff=126099 2015-02-17T00:18:12Z

<p>Andrea: /* Further steps */</p> <hr /> <div>{{Category=Solar Turbine}}<br /> The solar concentrator arrangement proposed for the factor e farm [[solar turbine]] implementation is of the linear fresnel type. Linear, as it's focus is a line as opposed to a point, and fresenl as it is made of many small reflectors as opposed to a monolithic parabolic trough.<br /> <br /> This is a discussion of the theory of linear fresnel solar concentrators, and a justification of the design decisions siezed upon by the factor e farm team.<br /> <br /> <br /> == Estimating available energy ==<br /> <br /> <br /> to be added soon. should cover:<br /> <br /> 1) total insolation<br /> <br /> 2) air mass losses<br /> <br /> 3) declination losses<br /> <br /> Given an estimate of available energy for a particular day of the year, actual performance estimates can be made, and (once operable) efficiencies measured.<br /> <br /> <br /> == Implementation dependant losses and issues ==<br /> <br /> In any orientation, the sun must be tracked minute by minute. The complexity of this tracking varies however with different orientations.<br /> <br /> Also, since a linear focusing system tracks in only one dimension, it suffers losses due to rays parallel to the axis of the trough coming in at a shallow angle and (though hitting the mirrors) missing the collector. The efficency of a linear collector experiencing edge effects is given by e=(L-o)/L where L is the length of the collector and o is the average offset caused by the angled light. o is given by h*Tan(theta) where h is the average distance between the collector and the reflectors and theta is the angle of the incident light in the plane parallel to the axis of the reflectors.<br /> <br /> Lastly, the effect of the mirrors not being perpendicular to the sun is a loss in flux reflected by the mirror. The effect varies with the half angle between the sun and the collector and the efficiency of light reflected is given as the cosine of the half angle (e= Cos(1/2 theta) <br /> <br /> <br /> There a three common orientations:<br /> <br /> 1) polar<br /> <br /> 2) North-South axis<br /> <br /> 3) East-West axis<br /> <br /> <br /> Each of these three possible orientations has associated tracking issues and also efficency losses specific to that orientation (end losses and half angle losses).<br /> <br /> <br /> The '''Polar orientation''' focuses on a line parallel to the pole of the earths rotation, that is, inclined and running north-south. Tracking here is the simplest, as the mirrors need only rotate at half the angular speed of the earths rotation. However, due to the need to incline the absorber and reflectors, this orientation requires more structural considerations (and expenditures) than a flat (of the ground) approach. Thus, the Factor E farm team has decided against this.<br /> <br /> The '''North-South orientation''' is similar to the polar orientation, but may be flat on the ground. Tracking may be as simple as in polar or it may have hidden complications (We don't know). Due to the latitude of the Factor E farm, the end losses associated with the shallowness of the suns angle parallel to the axis of the collector would be severe in winter if this orientation were laid flat on the ground. Since we do not wish to tilt the array towards the south for construction cost reasons (same as polar), and wish to collect energy during the winter, The factor E Farm team has shied away from this orientation as well. (calculations at [[Solar_Collector_Calculations#Losses_due_to_edge_effects_only]]<br /> <br /> Also, the reflectors move between plus and minus 22.5 degrees of tilt from 9am till 3pm. Thus there will be a maximum half angle loss of cosine 22.5 and a total daily loss of the integral of cos (1/2 theta) from theta =-22.3 to 22.5<br /> <br /> The '''East-West orientation''' offers possibly the most complex tracking. The angle of the mirrors is determined by the vector towards the sun projected onto the vertical axis running north-south. During the winter, the mirrors tilt down towards the south, coming up till noon and decreasing again. The severity of this angular adjustment decreases from winter solstice till equinox, when no angular adjustment is needed (the plane of the sun's motion is co-incident with the plane of the parabolic trough), and reverses direction during the summer, as the sun rises slightly north and comes slightly south by noon. This tracking will likely need to be accomplished by sensors rather than formulas.<br /> <br /> End losses in the east west orientation are maximum in the morning and evening, with almost none at noon. But as the sun is not inclined to the axis of the trough more than 45 degrees during the time of useable insolation, these losses are never as severe as winter end losses in the north south arrangement (where the noon sun is lower than 30 degrees, and the pre and post noon sun even lower. Thus, this arrangement will perform most satifactorily of the three in a flat on the ground implementation. <br /> <br /> As the exact tracking for this orientation is not known by us, the exact half angle losses cannot be calculated over a day. Over the year however, the noon time losses are much less than the north south orientation, as the sun only moves from -23 degrees to +23 degrees, giving a half angle change of -11 to +11 degrees. <br /> <br /> Given this information, the factor e farm team has selected an east-west orientation.<br /> <br /> == wall vs field of slats ==<br /> <br /> With many slats and a single absorber, the question comes up:<br /> * put the absorber high in the air, and put a field of slats near the ground to the south (and possibly also to the north), or<br /> * use the slats to cover a south-facing wall, like the slats of a window blind, and put the absorber to the south (possibly on the ground, or possibly high in the air -- but not so high it shadows the slats in the winter).<br /> <br /> Mounting slats to a wall significantly reduces the cost of making the array hail-resistant or hail-proof.<br /> Mounting slats to a wall results in needing to clean the slats less often, because any given piece of dirt is more likely to fall off a near-vertical slat than a near-horizontal slat.<br /> Mounting slats to a south-facing wall seems like it would collect more sunlight in the winter.<br /> <br /> Mounting the slats near ground level puts the moving parts where they are easier to access and repair.<br /> Mounting the slats near ground level requires less structure cost per slat (if you ignore the cost of hail-proofing).<br /> Mounting the slats near ground level works fine even near the equator.<br /> <br /> For now we choose to put the absorber high in the air, and the slats near the ground, because that is a proven system.<br /> <br /> == Reflector Design ==<br /> <br /> There are two possible materials from which to make the reflectors: glass mirrors or aluminized polymers (mylar, Reflect-tech).<br /> <br /> Also, the reflectors could be many and flat, or fewer and curved reflectors.<br /> <br /> '''Aluminized polymers''' have a short life (with reflect-tech claiming about a decade worth of usage), as they eventually succumb to Ultra Violet degradation and moisture wicked through the adhesives used to bind the polymer to a substrate. We have yet to find suitable backing for the thin films. We tried various wood products (oriented strand board, laminated medium density fiber board and thin ply wood). The Oriented strand board was not smooth enough to give an adequate reflection once the mylar (our cheap test for reflect-tech) was adhered to it, and there was general concern that the wood products would warp over the course of the years exposed to the elements. Tyvek house wrap was suggested but was not tried, though simulations with a tarp not adhered to the mylar gave decent results (is stretching of the film is adequate, which we found difficult to achieve). Reflect-tech advises the use of aluminum sheets (very expensive per square feet). Reflect-tech itself is expensive (2.00 per sqaure foot) given its relatively short life span, making the lifetime cost of a system prohibitive. Required maintenance may also be heavy, as dirt adheres readily to the surface, and care must be used when cleaning (mylar streaks easily we found)<br /> <br /> '''Glass mirrors''' have a much longer life span than polymers (30+ years according to doug woods of [http://www.harbornet.com/sunflower/pvdish.html Cassandra's Green Company]). They may be curved to a focal length of 12 ft maximum and do not require a backing. We broke one mirror by over tensioning it, and though doug woods has left his systems in the elements for thrity years, we have some doubts about its durability in a sever hail storm or very severe winds. Cheap 1/8th inch glass mirrors can be bought at huge chain hardware stores for $1.50 a square foot. Low iron, silver palladium glass mirrors can be bought for 1.75 a square foot by the train car load. Possibly we could by small sets at a reasonable price from Mr. Woods.<br /> <br /> As far as curvature goes, there are structural advantages to having fewer reflectors, each with a concentration ratio of 5 or so. Although a perfect parabola could have a concentration ratio of 50 or more, there are geometric limitations to a system which must track the sun. Also, we found a perfect parabolic shap difficult to achieve under non-tracking conditions. Our best results for curvature where with 2'x 1' panels of glass, with an image size of just under an inch and a half (concentration ratio of about 20), with about seven inches of unconcentrated light around the focus (ie: only 75% of the mirror assumed the curve, since the ends, for whatever reason, do not curve). image sizes of about 3 inches were achieved with mylar on thin plywood, but this could not be achieved over the entire length of the focus.<br /> <br /> <br /> === the limits of concentration ===<br /> <br /> Focusable light in this system moves off axis in two dimensions, yielding two complications to a perfect focus over the course of the day and year.<br /> <br /> '''Parallel-axis abberations'''<br /> <br /> (illustration soon)<br /> <br /> As light travels down different angles parallel to the axis of the concentrator, it travels different distances before reaching the absorber. Thus, if the array is in perfect focus at one angle, at another angle it will be out of focus. The percentage out of focus is inversely proportional to the amount of concentration possible. At twice the focal distance (%100 out of focus), the image is the same size as the width of the reflector. At 1.5 the focal length (%50), the image will be half the width of the reflector.<br /> <br /> In an east-west axis system, the sun moves from 45 degrees at 9 am to 0 at noon to 45 again at 3 pm. If this system were perfectly in focus at noon, the extra path length of Square root of two (~1.4) in the morning and evening would correspond to %40 out of focus or 2.5 times concentration. The best achievable theoretical fix would be to have the system focused perfectly at 22.5 degrees, so that the absorber is too close at noon and too far at 3pm, but neither as badly as if the system were in focus at noon. This corresponds to a maximum concentration of 3.27 (change in path length is 1/cos45 - 1/cos22.5 = 1.41 - 1.08 = .33 -&gt; % out of focus of .33/1.08= %30.5). since the sine changes quickly around 45 degrees, greater ratios could be obtained by sacrificing efficiency at the extremes.<br /> <br /> A north south axis orientation will experience this distortion less severely due to the fact that the seasonal angular deviation of the sun is much less than its daily variation.<br /> <br /> '''Perpendicular-axis abberations'''<br /> <br /> There are (at least) two parabolas passing through a given point that will focus perfectly at one point. (illustration soon). The first is a parabola has its axis parallel to the sun's rays with the absorber at its focus. The second is one with its axis at the half angle between the absorber and sun, with a focal length such that the absrober lays on the focal plane of the parabola (a plane perpendicular to the parabola's axis and passing through the focus. The image created by a parabolic reflector is undistorted on this plane). This second parabola will be useful in analyzing this type of distortion (and is also easier to implement)<br /> <br /> As the sun moves and the mirror moves to track it, the focal plane of our perfect reflector rotates around the reflector's pivot. thus, the absorber, once in the focal plane is there no longer. (illustration soon). The ideal focal length of our mirror would then be Cos(theta) of its previous value to maintain focus on the absorber. Because this effect depends upon the half angle, it is much less noticeable than the parallel axis phenomena. The maximum deviation in an east-west axis system is very small (1-Cos(11 degrees)=.018 or 1.8%), thus this effect is negligible in our system. It is more sever in the north-south system (1-cos(22.5) = 7.6%), but still hardly noticeable.<br /> <br /> <br /> == Recomendations ==<br /> <br /> The conclusion of this report is that the Factor E farm linear fresenl collector should have an East-West axis and use 1/8th inch untempered glass mirrors. Mirrors closer to the absorber (&lt;~14 ft) should be flat, whilst mirrors more distant should be curved so as to focus perfectly at ~11am half way between the equinox and the solstice. If at the time the mirrors are focused it happens to not be near that date, its alright because seasonal drift of the focus is minimal (1.8%).<br /> <br /> == Further steps ==<br /> <br /> The use of a secondary reflector of the compound parabolic type would be highly beneficial, and inquiries should be made into its possible manufacture or purchase.<br /> <br /> Estimations of available insolation should be made for several specific days throughout the year, and for noon time throughout the seasons. <br /> <br /> Absorber height decided upon, which will be based upon available construction methods.<br /> <br /> A site chosen and roughly surveyed. (general strike and dip of the working surface)<br /> <br /> Details of the mirror row's positions should be sketched, with proper spacing for minimal shading in the winter with reasonably efficent land use for summer radiation considered.<br /> <br /> Expected system performance estimated.<br /> <br /> <br /> and on from there...<br /> <br /> * [http://en.wikipedia.org/wiki/Concentrating_Linear_Fresnel_Reflector Wikipedia: Concentrating Linear Fresnel Reflector]<br /> <br /> =OSE Technical Requirements=<br /> as Open Source Ecologie team is moving forward developping the linear fresnel reflector is developing and request for your participation the complete set of technical requirements. the current work in progress is located [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english here]<br /> and [[http://opensourceecology.org/wiki/Solar_Concentrator/Research_Development here]]</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator/Research_Development&diff=126098 2015-02-17T00:15:39Z

<p>Andrea: /* See Also */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> =Overview=<br /> Research pertaining to the '''Solar Concentrator'''.<br /> <br /> =Research=<br /> <br /> * [[:Category:Solar Power]]<br /> * [[:Category:Solar Turbine]]<br /> <br /> * [http://www.google.org/rec.html Google.org]<br /> * [http://en.wikipedia.org/wiki/MPPT Wikipedia: Maximum Power Point Tracking]<br /> * [http://www.builditsolar.com/Projects/Projects.htm build it solar projects]<br /> * [http://www.cerebralmeltdown.com/2011/05/30/open-source-arduino-sun-trackingheliostat-program/#more-2866 Arduino Heliostat / solar tracking] <br /> http://openframeworks.cc could have some useful code and application to this. It would probably only use one of these systems displayed. Also generally an amazing resource for realtime 3d, robotics, arduino control.<br /> <br /> [[Image:solarTrackingCodeExample.png|300px]]<br /> * [http://thinkprogress.org/romm/2010/11/24/207081/video-solar-furnace-melts-rock/ Solar Furnace]<br /> * [http://en.wikipedia.org/wiki/Nonimaging_optics non-imaging optics]<br /> * [http://www.landartgenerator.org/blagi/archives/963 Desert Bloom fresnel lens collectors]<br /> <br /> =OSE Technical Requirements=<br /> as Open Source Ecologie team is moving forward developping the linear fresnel reflector is developing and request for your participation the complete set of technical requirements. the current work in progress is located [http://wiki.osefrance.org/doku.php?id=wiki:technical_requirements_english here]<br /> <br /> <br /> &lt;HTML&gt;<br /> &lt;table border=0 cellpadding=0 cellspacing=0 width=911 style='border-collapse:<br /> collapse;table-layout:fixed;width:683pt'&gt;<br /> &lt;col width=399 style='mso-width-source:userset;mso-width-alt:14592;width:299pt'&gt;<br /> &lt;col width=64 span=8 style='width:48pt'&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=2 align=left width=463 style='height:<br /> 15.0pt;width:347pt'&gt;Module breakdown for solar concentrator and its prove of<br /> concept.&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Added to OSE<br /> Specification for product design and more specific&lt;span style='display:none'&gt;ally<br /> applied to the solar concentrator:&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl151189 colspan=8 align=left&gt;http://opensourceecology.org/wiki/OSE_Specifications_for_Product_Design&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;A score will be<br /> attributed on the designes based on the Ose Spe&lt;span style='display:none'&gt;cifications<br /> evaluation Template&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl151189 colspan=8 align=left&gt;http://opensourceecology.org/wiki/OSE_Specifications_Assessment_Template&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 align=left&gt;Prototype&lt;span style='display:none'&gt; A size 1<br /> Solar concentrator&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl641189 colspan=4 align=left&gt;Proof of concept / Demonstrateur&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl641189 align=left style='height:15.0pt'&gt;General&lt;/td&gt;<br /> &lt;/tr&gt; <br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be DIY<br /> friendly (which gives advantage to the linear fresnel&lt;span style='display:<br /> none'&gt; reflector type of concentrator)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Linear fresnel<br /> reflector with double concentration CPC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;50%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;5KW heat power<br /> output (about 10m^2)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;10%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;able to reach<br /> more than 250øC&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must allow<br /> (with additional modules) both N/S and E/W axis of i&lt;span style='display:<br /> none'&gt;nstallation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl641189 align=left style='height:15.0pt'&gt;Structure&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must support<br /> the whole Solar Concentrator system&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow<br /> mirrors rotation of 270ø with a complete reverse of t&lt;span style='display:<br /> none'&gt;he mirror in case of bad weather conditions&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;structure and<br /> design OSE Compatible http://opensourceecology.&lt;span style='display:none'&gt;org/wiki/OSE_Specifications_for_Product_Design&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Ground<br /> implantation must assure sufficient stability&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Sufficent<br /> rigidity to assure resistance to vibrations or impacts&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easily<br /> assembled with modular-easy to transport components&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Easy optical<br /> alignment (assured by any mean - ie. Tracks, giudeli&lt;span style='display:<br /> none'&gt;nes, holes, etc)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mobile support<br /> of the mirrors to avoid deformation due to weig&lt;span style='display:none'&gt;ht,<br /> wind, vibrations, etc&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optionally<br /> without any weldering as much as possible&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=7 align=left style='height:15.0pt'&gt;optionally<br /> the concentrator and the absorber have indipendent structures (pro: less<br /> vibrations, cons: harder to align correctly)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=6 align=left style='height:15.0pt'&gt;Optionally,<br /> if N/S oriented, allow to move the mirrors toward south in order to allow<br /> seasonal optimization&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;with E/W axis,<br /> must allow 1*focal lenght of mirrors lenght more &lt;span style='display:none'&gt;than<br /> absorber on both W and E direction&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl641189 align=left style='height:15.0pt'&gt;Optical<br /> concentration&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=3 align=left style='height:15.0pt'&gt;Mirror's<br /> Geometry to be (to define based on best optical optimization, in progress)&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors with<br /> high reflectivity (&amp;gt;90% on wide spectrum)&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;resistant<br /> mirrors with high lifespan for external usage.&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Mirrors easy to<br /> clean&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Secondary<br /> concentration on the absorber higher than 2x&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;total factor of<br /> concentration 25&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;mirrors easy to<br /> fix and replace on their support&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;70%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl641189 align=left style='height:15.0pt'&gt;Absorber&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;specially<br /> designed for the selected thermal fluid, with passive o&lt;span<br /> style='display:none'&gt;r forced circulation&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Absorbing<br /> material with high optical absorbtion rate on wide sp&lt;span style='display:<br /> none'&gt;ectrum&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;100%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;elevated<br /> thermal exchange Absorber / Fluid&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;high thermal<br /> insulation (from external air, from the point of con&lt;span style='display:<br /> none'&gt;tact with the structure, from IR radiations)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;High resistance<br /> of thermal variation constraints (high temperatu&lt;span style='display:none'&gt;re<br /> and valiration, high pressure and variation, thermal expansions and<br /> contractions)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Specially<br /> designed for the secondary concentrator&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must be<br /> designed to reduce any risk concern&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Cost optimized&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl641189 align=left style='height:15.0pt'&gt;Motors,<br /> trackers, programs&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must allow for<br /> a real time follow &amp;amp; programmed sun follow base&lt;span style='display:none'&gt;d<br /> on Lat/long&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Automatically<br /> detect and self protect in case of bad weather&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> track the sun and send the correct angle in order&lt;span style='display:none'&gt;<br /> to optimize concentration&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Must be able to<br /> sense temperature and pressure at fluid input a&lt;span style='display:none'&gt;nd<br /> output&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;programmable to<br /> stop automatically&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;must provide an<br /> easy GUI control interface (optionally handled t&lt;span style='display:none'&gt;hrough<br /> cloud, with data collection)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 style='height:15.0pt'&gt;&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl641189 align=left style='height:15.0pt'&gt;Modeling and<br /> studies&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Optimisation of<br /> Solar concentrator design&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;60%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Self pilot of<br /> the solar concentrator (must perform a logical analy&lt;span style='display:<br /> none'&gt;sis of current solar concentrator of JB)&lt;/span&gt;&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Tools to<br /> predict energetical production based on geography&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 colspan=4 align=left style='height:15.0pt'&gt;Model<br /> of economical and technical conditions for optimal usage of the solar<br /> concentrator&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Finalize<br /> localized business case&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;tr height=20 style='height:15.0pt'&gt;<br /> &lt;td height=20 class=xl151189 align=left style='height:15.0pt'&gt;Identify<br /> technical modifications needed to adapt to new usage&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;80%&lt;/td&gt;<br /> &lt;td class=xl631189 align=right&gt;40%&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;![if supportMisalignedColumns]&gt;<br /> &lt;tr height=0 style='display:none'&gt;<br /> &lt;/tr&gt;<br /> &lt;![endif]&gt;<br /> &lt;/table&gt;<br /> <br /> <br /> &lt;/HTML&gt;<br /> <br /> <br /> =See Also=<br /> *[[Solar to Electrical]]<br /> *[[Solar Thermal Electrical Generation]]<br /> *[[Parabolic Trough Prototype]]<br /> *[[Other Solar Thermal Companies]]<br /> *[[Solar Collector Calculations]]<br /> *[[Linear Fresnel Solar Concentrator]]<br /> <br /> <br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator&diff=126093 2015-02-16T23:24:51Z

<p>Andrea: /* See Also */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> ==Overview==<br /> [[Image:SolarConcentrator.png|right|400px|Solar Concentrator]] <br /> <br /> Concentrated solar power (CSP) systems, are systems that use mirrors or lenses to concentrate a large area of sunlight, or solar thermal energy, onto a small area. Electrical power is produced when the concentrated light is converted to heat which drives a heat engine (usually a steam turbine) connected to an electrical power generator.<br /> <br /> {{Video}}<br /> <br /> ==Details==<br /> <br /> '''Solar Concentrators'''<br /> * [[Solar Concentrators]]<br /> ** [[Solar Concentrator Tracking]]<br /> ** [[Solar Concentrator Resources]]<br /> ** [[Solar Concentrator Links]]<br /> ** [[Solar Concentrator Reviews]]<br /> ** [[Solar Concentrator Resource Map]]<br /> ** [[Solar Concentrator Red Pages]]<br /> <br /> '''Categories'''<br /> *[[:Category:Solar Power]]<br /> *[[:Category:Solar Turbine]]<br /> <br /> ==Product Ecology==<br /> [[Image:3b-Solarenergyeco.png|right|600px]]<br /> [[Image:SolarEconomy.jpg|right|400px]]<br /> <br /> {{Product Ecology<br /> |From=<br /> * {{Induction Furnace}}<br /> * {{Electric Motor}}<br /> * {{Bioplastic Extruder}}<br /> <br /> |Uses=<br /> * [[Sunlight]]<br /> * [[Heat]]<br /> * [[Heat Transfer Fluid]]<br /> <br /> |Creates=<br /> * [[Steam]]<br /> * [[Power]]<br /> * [[Heat]]<br /> <br /> |Enables=<br /> * {{Steam Generator}}<br /> * {{Steam Engine}}<br /> * {{UPS}}<br /> * [[Sintering]]<br /> * [[CHP]]<br /> <br /> |Components=<br /> * [[Mirrors]]<br /> * [[Pipe]]<br /> * [[Fluid]]<br /> }}<br /> <br /> ==Components==<br /> *Mirrors<br /> *Tubes<br /> *Boiler<br /> *Turbine<br /> <br /> ==Status==<br /> <br /> The Solar Concentrator is currently in the [[Solar Concentrator/Research Development|research phase of product development.]]<br /> <br /> ==See Also==<br /> *[[Zenman Energy]]<br /> *[[Solar Fire]]<br /> *[[Solar Collector Calculations]]<br /> *[[100 miles on each side]]<br /> <br /> *[http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire| OSE France Solar Concentrator LFR]<br /> <br /> *[http://en.wikipedia.org/wiki/Solar_concentrator Wikipedia: Solar Concentrator]<br /> *[http://en.wikipedia.org/wiki/Solar_thermal_energy Wikipedia: Solar Thermal Energy]<br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Solar_Concentrator&diff=126092 2015-02-16T23:23:36Z

<p>Andrea: /* See Also */</p> <hr /> <div>{{GVCS Header}}<br /> <br /> ==Overview==<br /> [[Image:SolarConcentrator.png|right|400px|Solar Concentrator]] <br /> <br /> Concentrated solar power (CSP) systems, are systems that use mirrors or lenses to concentrate a large area of sunlight, or solar thermal energy, onto a small area. Electrical power is produced when the concentrated light is converted to heat which drives a heat engine (usually a steam turbine) connected to an electrical power generator.<br /> <br /> {{Video}}<br /> <br /> ==Details==<br /> <br /> '''Solar Concentrators'''<br /> * [[Solar Concentrators]]<br /> ** [[Solar Concentrator Tracking]]<br /> ** [[Solar Concentrator Resources]]<br /> ** [[Solar Concentrator Links]]<br /> ** [[Solar Concentrator Reviews]]<br /> ** [[Solar Concentrator Resource Map]]<br /> ** [[Solar Concentrator Red Pages]]<br /> <br /> '''Categories'''<br /> *[[:Category:Solar Power]]<br /> *[[:Category:Solar Turbine]]<br /> <br /> ==Product Ecology==<br /> [[Image:3b-Solarenergyeco.png|right|600px]]<br /> [[Image:SolarEconomy.jpg|right|400px]]<br /> <br /> {{Product Ecology<br /> |From=<br /> * {{Induction Furnace}}<br /> * {{Electric Motor}}<br /> * {{Bioplastic Extruder}}<br /> <br /> |Uses=<br /> * [[Sunlight]]<br /> * [[Heat]]<br /> * [[Heat Transfer Fluid]]<br /> <br /> |Creates=<br /> * [[Steam]]<br /> * [[Power]]<br /> * [[Heat]]<br /> <br /> |Enables=<br /> * {{Steam Generator}}<br /> * {{Steam Engine}}<br /> * {{UPS}}<br /> * [[Sintering]]<br /> * [[CHP]]<br /> <br /> |Components=<br /> * [[Mirrors]]<br /> * [[Pipe]]<br /> * [[Fluid]]<br /> }}<br /> <br /> ==Components==<br /> *Mirrors<br /> *Tubes<br /> *Boiler<br /> *Turbine<br /> <br /> ==Status==<br /> <br /> The Solar Concentrator is currently in the [[Solar Concentrator/Research Development|research phase of product development.]]<br /> <br /> ==See Also==<br /> *[[Zenman Energy]]<br /> *[[Solar Fire]]<br /> *[[Solar Collector Calculations]]<br /> *[[100 miles on each side]]<br /> <br /> *[[http://wiki.osefrance.org/doku.php?id=wiki:concentrateursolaire| OSE France Solar Concentrator LFR]]<br /> <br /> *[http://en.wikipedia.org/wiki/Solar_concentrator Wikipedia: Solar Concentrator]<br /> *[http://en.wikipedia.org/wiki/Solar_thermal_energy Wikipedia: Solar Thermal Energy]<br /> <br /> {{GVCS Footer}}</div>

Andrea https://wiki.opensourceecology.org/index.php?title=Main_Page/fr&diff=125592 2015-01-31T23:43:34Z

<p>Andrea: </p> <hr /> <div>{{Lang|Page Principale}}<br /> __NOTOC__ <br /> {| align=&quot;center&quot; style=&quot;max-width:65em;&quot;<br /> |-<br /> |<br /> &lt;!-- BANNER ACROSS TOP OF PAGE --&gt;<br /> {| id=&quot;mp-topbanner&quot; style=&quot;width:100%; background:#f9f9f9; margin:1.2em 0 6px 0; border:1px solid #ddd;&quot;<br /> | style=&quot;width:61%; color:#000;&quot; |<br /> <br /> &lt;!-- HEADER - OPEN SOURCE ECOLOGY --&gt;<br /> {| style=&quot;width:280px; border:none; background:none;&quot;<br /> | style=&quot;width:280px; text-align:center; white-space:nowrap; color:#000;&quot; |<br /> &lt;div style=&quot;font-size:162%; border:none; margin:0; padding:.1em; color:#000;&quot;&gt;Le wiki {{LinkLang|Open Source Ecology}},&lt;/div&gt;<br /> &lt;div style=&quot;top:+0.2em; font-size:95%;&quot;&gt;site de développement du '''{{LinkLang|Global Village Construction Set}}''',&lt;/div&gt;<br /> &lt;div style=&quot;top:+0.2em; font-size:95%;&quot;&gt;concevant des technologies libres de droit pour [[OSE Specifications#Localization of Material Sourcing and of Production|les communautés résilientes]].&lt;/div&gt;<br /> &lt;br&gt;<br /> &lt;div id=&quot;articlecount&quot; style=&quot;width:100%; text-align:center; font-size:85%;&quot;&gt;[[Special:Statistics|{{NUMBEROFARTICLES}}]] Pages<br /> &lt;/div&gt;<br /> |}<br /> <br /> &lt;!-- LIST ON RIGHT-HAND SIDE OF BANNER --&gt;<br /> | style=&quot;width:13%; font-size:95%;&quot; |<br /> * {{LinkLang|:Category:Metalworks|Métallurgie}}<br /> * [[:Category:Materials|Matériaux]]<br /> * [[:Category:Digital Fabrication|Production informatisée]]<br /> | style=&quot;width:13%; font-size:95%;&quot; |<br /> * [[:Category:Food and Agriculture|Agriculture et Nourriture]]<br /> * [[:Category:Energy|Énergie]]<br /> * [[:Category:Software|Logiciels]]<br /> | style=&quot;width:13%; font-size:95%;&quot; |<br /> * [[:Category:Housing and construction|Construction / Habitat]]<br /> * [[:Category:Organizations|Organisations]]<br /> * '''{{LinkLang|Wiki map|Plan du Site}}'''<br /> |}<br /> <br /> &lt;!-------- LEFT COLUMN ---------&gt;<br /> {|id=&quot;mp-upper&quot; style=&quot;margin:0px 0px 0px 0px; background:none;&quot;<br /> |class=&quot;MainPageBG&quot; style=&quot;width:60%; border:1px solid #fad67d; background:#faf6ed; vertical-align:top; color:#000;&quot;|<br /> {|id=&quot;mp-left&quot; width=&quot;100%&quot; cellpadding=&quot;2&quot; cellspacing=&quot;5&quot; style=&quot;vertical-align:top; background:#faf6ed;&quot;<br /> <br /> &lt;!-----------WELCOME!---Note: My use of header tags in this section is highly inelegant. If you know a better way, please change it. -------------&gt;<br /> |-<br /> ! &lt;h2 id=&quot;mp-tfa-h2&quot; style=&quot;margin:0; background:#faecc8; font-size:120%; font-weight:bold; border:1px solid #fad67d; text-align:left; color:#000; padding:0.2em 0.4em;&quot;&gt;Bienvenue !&lt;/h2&gt;<br /> |-<br /> |style=&quot;color:#000; text-align:center;&quot;| &lt;div id=&quot;mp-tfa&quot;&gt;<br /> <br /> {| style=&quot;background-color:#faf6ed; margin: 1em auto 1em auto; text-align:left;&quot; cellpadding=&quot;5&quot; cellspacing=&quot;3&quot; <br /> |-<br /> |&lt;h3 style=&quot;font-size:1.5em;&quot;&gt;{{LinkLang|Crash course on OSE|Introduction}}&lt;/h3&gt; &lt;h4 style=&quot;font-size:0.9em; font-weight:normal;&quot;&gt;Résumé de nos travaux&lt;/h4&gt;<br /> |&lt;h3 style=&quot;font-size:1.5em;&quot;&gt;[http://blog.opensourceecology.org/ Blog]&lt;/h3&gt; &lt;h4 style=&quot;font-size:0.9em; font-weight:normal;&quot;&gt;Dernières nouvelles et mises à jour&lt;/h4&gt;<br /> |&lt;h3 style=&quot;font-size:1.5em;&quot;&gt;[http://forum.opensourceecology.org/ Forum]&lt;/h3&gt; &lt;h4 style=&quot;font-size:0.9em; font-weight:normal;&quot;&gt;Rencontres, brainstorms, discussions&lt;/h4&gt;<br /> |- <br /> |&lt;h3 style=&quot;font-size:1.5em;&quot;&gt;{{LinkLang|FAQs|FaQ}}&lt;/h3&gt; &lt;h4 style=&quot;font-size:0.9em; font-weight:normal;&quot;&gt;Vos questions trouveront réponse&lt;/h4&gt;<br /> |&lt;h3 style=&quot;font-size:1.5em;&quot;&gt;{{LinkLang|Get involved|Engagez-vous}}&lt;/h3&gt; &lt;h4 style=&quot;font-size:0.9em; font-weight:normal;&quot;&gt;Contribuez à notre projet&lt;/h4&gt;<br /> |&lt;h3 style=&quot;font-size:1.5em;&quot;&gt;{{LinkLang|Donate|Faire un don}}&lt;/h3&gt; &lt;h4 style=&quot;font-size:0.9em; font-weight:normal;&quot;&gt;Aidez-nous financièrement&lt;/h4&gt;<br /> |[[Utilisateurs Francophones]]<br /> |}<br /> &lt;/div&gt; <br /> <br /> &lt;!--------------INTRODUCTION ---------------&gt;<br /> |-<br /> ! &lt;h2 id=&quot;mp-tfa-h2&quot; style=&quot;margin:0; background:#faecc8; font-size:120%; font-weight:bold; border:1px solid #fad67d; text-align:left; color:#000; padding:0.2em 0.4em;&quot;&gt;Introduction&lt;/h2&gt;<br /> |-<br /> |style=&quot;color:#000;&quot;| &lt;div id=&quot;mp-tfa;&quot;&gt;<br /> <br /> {| style=&quot;background-color:#faf6ed; margin: 1em auto 1em auto;&quot; <br /> |Open Source Ecology est un réseau d'agriculteurs, d'ingénieurs et de donateurs qui a imaginé et créé le ''Global Village Construction Set'', une plateforme technologique ''open source'', à faible coût et à haute performance. Elle a été conçue pour permettre la fabrication artisanale des machines industrielles nécessaires à l'établissement d'une civilisation durable avec tout le confort moderne. Le GVCS facilite l'entrée dans l'agriculture, la construction et la fabrication artisanale. C'est comme un Mécano à taille-humaine constitué d'outils modulaires permettant de créer une économie diversifiée.<br /> <br /> le savez-vous? Open Source Ecology France [http://www.osefrance.fr] est une association crée en Oct 2014, rejoignez-nous pour contribuir à la construction du GVCS.<br /> <br /> '''Le GVCS en 2 minutes'''<br /> &lt;html&gt;<br /> &lt;script type=&quot;text/javascript&quot; src=&quot;http://s3.www.universalsubtitles.org/embed.js&quot;&gt;<br /> (<br /> {&quot;base_state&quot;: {&quot;language&quot;: &quot;fr&quot;}, &quot;video_url&quot;: &quot;http://www.youtube.com/watch?v=CD1EWGQDUTQ&quot;}<br /> )<br /> &lt;/script&gt;<br /> &lt;/html&gt;<br /> <br /> |}<br /> &lt;/div&gt; <br /> |}<br /> <br /> |style=&quot;border:1px solid transparent&quot;|<br /> <br /> &lt;!-------RIGHT COLUMN---------&gt;<br /> | class=&quot;MainPageBG&quot; style=&quot;width:40%; border:1px solid #C1CEDE; background:#f1f5fc; vertical-align:top;&quot;|<br /> {|id=&quot;mp-right&quot; width=&quot;100%&quot; cellpadding=&quot;1&quot; cellspacing=&quot;5&quot; style=&quot;vertical-align:top; background:#f1f5fc;&quot;<br /> <br /> &lt;!-------------- NEWS FEED (BLOG) ---------------&gt;<br /> |-<br /> ! &lt;h2 id=&quot;mp-otd-h2&quot; style=&quot;margin:0; background:#abd5f5; font-size:120%; font-weight:bold; border:1px solid #C1CEDE; text-align:left; color:#000; padding:0.2em 0.4em;&quot;&gt;News&lt;/h2&gt;<br /> |-<br /> |style=&quot;color:#000;&quot;| &lt;div id=&quot;mp-tfa&quot;&gt;<br /> {{IncludeLang|News}}<br /> &lt;/div&gt; <br /> <br /> &lt;!-------------- TRUE FANS ---------------&gt;<br /> |-<br /> ! &lt;h2 id=&quot;mp-otd-h2&quot; style=&quot;margin:0; background:#abd5f5; font-size:120%; font-weight:bold; border:1px solid #C1CEDE; text-align:left; color:#000; padding:0.2em 0.4em;&quot;&gt;Ce qu'en disent nos donateurs, les True Fans&lt;/h2&gt;<br /> |-<br /> |style=&quot;color:#000;&quot;| &lt;div id=&quot;mp-tfa&quot;&gt;<br /> {{IncludeLang|True Fan}} <br /> &lt;/div&gt; <br /> <br /> &lt;!-------------- FEATURED PAGE ---------------&gt;<br /> |-<br /> ! &lt;h2 id=&quot;mp-otd-h2&quot; style=&quot;margin:0; background:#abd5f5; font-size:120%; font-weight:bold; border:1px solid #C1CEDE; text-align:left; color:#000; padding:0.2em 0.4em;&quot;&gt;À lire&lt;/h2&gt;<br /> |-<br /> |style=&quot;color:#000;&quot;| &lt;div id=&quot;mp-tfa&quot;&gt;<br /> {{IncludeLang|Featured Page}} <br /> &lt;/div&gt; <br /> |-<br /> |}<br /> |}<br /> &lt;!------------BOTTOM SECTION --------------&gt;<br /> {| id=&quot;mp-tfp&quot; style=&quot;margin:4px 0px 0px 0px; width:100%; background:none;&quot;<br /> |class=&quot;MainPageBG&quot; style=&quot;width:100%; border:1px solid #ddcef2; background:#faf5ff; vertical-align:top; color:#000;&quot;|<br /> {| cellpadding=&quot;2&quot; cellspacing=&quot;5&quot; style=&quot;vertical-align:top; background:#faf5ff; color:#000; width:100%&quot;<br /> &lt;!---------GVCS LIST-------------------------------&gt;<br /> ! &lt;h2 id=&quot;mp-tfp-h2&quot; style=&quot;margin:0; background:#ddcef2; font-size:120%; font-weight:bold; border:1px solid #afa3bf; text-align:left; color:#000; padding:0.2em 0.4em&quot;&gt;Le Global Village Construction Set&lt;/h2&gt;<br /> |-<br /> |style=&quot;color:#000;&quot;| <br /> {| align=&quot;center&quot; style=&quot;background-color:#f1f5fc; text-align:left;&quot;<br /> |{{IncludeLang|GVCS List}}<br /> |}<br /> |}<br /> |}<br /> |}</div>

Andrea