Thermoelectric Generator: Difference between revisions
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=Individual Modules= | =Individual Modules= | ||
*$3 for 3W - [https://www.ebay.com/itm/TEG-Module-High-Temperature-Power-Thermoelectric-Generator-Semiconductor-F4I0/184519142503?_trkparms=aid%3D1110009%26algo%3DSPLICE.COMPLISTINGS%26ao%3D1%26asc%3D20200220094952%26meid%3Dfdf55403879047b888e22da5995c38dc%26pid%3D100008%26rk%3D2%26rkt%3D12%26sd%3D310148993913%26itm%3D184519142503%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3Ddefault%26brand%3DUnbranded&_trksid=p2047675.c100008.m2219] | |||
*$5 for 3W - at 100C between 20C and 120C - [https://www.wish.com/product/596f3a08697ee011070b3077?hide_login_modal=true&from_ad=goog_shopping&_display_country_code=US&_force_currency_code=USD&pid=googleadwords_int&c=%7BcampaignId%7D&ad_cid=596f3a08697ee011070b3077&ad_cc=US&ad_curr=USD&ad_price=2.00&campaign_id=7203534630&gclid=CjwKCAiA7939BRBMEiwA-hX5J5Q4-q8DeF-8bXMzNnWWXSc0LwlHDjpep5_QORoIuM4tNUXpph7-BBoC6rAQAvD_BwE&share=web] | *$5 for 3W - at 100C between 20C and 120C - [https://www.wish.com/product/596f3a08697ee011070b3077?hide_login_modal=true&from_ad=goog_shopping&_display_country_code=US&_force_currency_code=USD&pid=googleadwords_int&c=%7BcampaignId%7D&ad_cid=596f3a08697ee011070b3077&ad_cc=US&ad_curr=USD&ad_price=2.00&campaign_id=7203534630&gclid=CjwKCAiA7939BRBMEiwA-hX5J5Q4-q8DeF-8bXMzNnWWXSc0LwlHDjpep5_QORoIuM4tNUXpph7-BBoC6rAQAvD_BwE&share=web] | ||
*Cooling is low price - but we need TEG, not cooling. Cooling - $2 for 60W - or 3W at 5% efficiency - [http://www.amazon.com/Vktech-TEC1-12706-Thermoelectric-Cooling-Peltier/dp/B00IKDL22O/ref=sr_1_5?s=pc&ie=UTF8&qid=1461831196&sr=1-5&keywords=Teg] | *Cooling is low price - but we need TEG, not cooling. Cooling - $2 for 60W - or 3W at 5% efficiency - [http://www.amazon.com/Vktech-TEC1-12706-Thermoelectric-Cooling-Peltier/dp/B00IKDL22O/ref=sr_1_5?s=pc&ie=UTF8&qid=1461831196&sr=1-5&keywords=Teg] | ||
Revision as of 20:00, 20 November 2020
Efficiency
- 5-8% - []
DIY Builds
- 14 Watts hackaday - [1]
Industry Standards
- 45W for $500 - [2]. Fan cooled.
- 100W max hot side temp is 300C? - [3] - $725 - [4]
- 70W - max hot side temp is 840F? -
- 60W liquid cooled - [5] - Don't exceed 900F on hot side.
- 50W siberian from a small stove - [6]
- 100W - German - http://thermalforce.de/engl/product/module/index.php
- 200W Swedish - [7]
- 500W Firevolt
Individual Modules
- $3 for 3W - [8]
- $5 for 3W - at 100C between 20C and 120C - [9]
- Cooling is low price - but we need TEG, not cooling. Cooling - $2 for 60W - or 3W at 5% efficiency - [10]
- Specs - [11]
Links
- Key link -Thermoelectrics offer to be competitive with other alternative sustainable energy sources - [12]
- Published report on a 150W initial design, which put out 14W in reality. -[http://www.harding.edu/olree/2009-10/senior%20design%20-%20final%20reports/thermoelectric%20generator/thermoelectric_generator_-_final_report.pdf
- Design paper on TEGs - [13]
- http://www.newelectronics.co.uk/electronics-news/high-power-thermoelectric-generator-utilises-thermal-difference-of-only-5c/175937/
Technical Design
- Best Resource as a Design Guide - tight packing fraction of modules appears to be a key requirement for higher power applications - [14] - as also seen in Firevolt.
- DOE design report - 500w on a 200 degree differential from car exhaust - [15]
Conclusions
- If accessible modules put out 3W (5% of 60W) and cost $2, then we have a 70 cent per watt cost in TEG modules at maximum efficiency. This translates to a practical 100W system at $70 in peltier cells, plus balance of system for heating and cooling. If a stove is used, and the cold water side is based on a simple radiator (which adds minimally to space heating) - the cost is feasible. Pump - [16] - 6W draw, but pump could probably be smaller. $20. Baseboard radiators for cool water heat rejection - $40x2. Aluminum heat sinks - that's the most expensive part - so use simple 1/8"x2"x2" square steel tubing at a dollar per pound. Should be doable at low cost of approximately $250 in parts, making this very competitive with PV prices. A 100W system can produce as much power as a 400W PV system that assumes 6 hrs of light per day. Equivalent PV cost of 65 cents per watt.