Dessicant-Humidifier Cycle Refrigeration: Difference between revisions

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=Basics=
#REDIRECT [[Desiccant-Humidifier Cycle Refrigeration]]
*A type of Refrigeration Cycle that uses a combination of evaporative cooling (endothermic cool end), and dehumidification via dessicant(s) (exothermic hot end) to pump heat
*Can be used for [[Solar Air Conditioning]]
*Is also advantagous in it's design, and material simplicity
 
=Plotting=
*Should the columns be randomly packed, packed, spray, or some hybrid
*Little info on water evaporation (That [[User:Eric]] has found so far )
*[https://www.aiche.org/system/files/aiche-proceedings/conferences/404771/papers/483651/P483651.pdf A Whitepaper on CO2 Scrubber Tower Design] (this was for co2 scrubbing via amonia absorbtion but compared the Spray Towers and Packed Columns)
 
=Process=
[[File:Dessicant AC Diagram.jpg]]
 
==Evaporative Cooling Collumn==
*Room Temperature air is pushed in to a counter flow water sprayer collumn with mesh/[[bioballs]]
*The water evaporates and cools the air (at the cost of increased humidity)
*It is then sent to the Dessication Collumn
 
==Dessication Collumn==
*This works in a similar manner as the Evaporative Column, but it has the opposite goal, Dessication of the Air Stream
*It does this via a dessicant, most likely a [[Liquid Dessicant]], due to ease of operation
*Produces Fully Dry Air, and Saturated Dessicant via Liquid Dessicant
*Make an identical unit to the Evaporative Cooling Collumn, and replace the water with ?percent concentrated calcium chloride solution
*Air sent to Humidity Control Collumn (Optional), Liquid Dessicant sent to Regenerator
 
==Humidity Control Collumn==
*This takes the Fully Dry Air, and brings the humidity up to comfortable levels
*It can use OTS humidifiers, or be a smaller version of the Evaporative Cooling Collumn
*This stage is OPTIONAL
 
==Dessicant Regeneration Module==
*This is a module where the Saturated Liquid Dessicant is Heated to Concentrate it and thus regenenerate it.
*Passive solar is promising, but any heat source will do
*Also heat exchangers that utilize waste heat from the process for regeneration may improve efficiency further
 
=Industry Standards=
*
 
=Open Source Designs=
*[https://www.youtube.com/watch?v=R_g4nT4a28U A design by the youtube channel "Tech Ingredients" ]
 
=OSE Design=
*[[Open Source Dessicant-Humidifier Cycle Based Liquid Chiller]] (Used with a [[Hydronic Cooling]] system, or just a spray tower for the air?)
 
=Internal Links=
*[[Liquid Dessicants]]
 
=External Links=
*[https://en.wikipedia.org/wiki/Solar_air_conditioning#Solar_open-loop_air_conditioning_using_desiccants The Wikipedia Page on Solar open-loop air conditioning using desiccants]
*[https://www.youtube.com/watch?v=R_g4nT4a28U A video on a design by the youtube channel "Tech Ingredients"]

Latest revision as of 04:30, 18 June 2021

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