Open Source Peltier Refrigerator: Difference between revisions
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=Introduction= | =Introduction= | ||
4x less efficient than compression-based refrigerators, but may be worth it for reasons of higher simplicity or where DC only is available - [https://www. | *4x less efficient than compression-based refrigerators, but may be worth it for reasons of higher simplicity or where DC only is available - [https://en.wikipedia.org/wiki/Thermoelectric_cooling#Performance] | ||
*DOE publication evaluating refrigeration types - [http://www.pnl.gov/main/publications/external/technical_reports/pnnl-19259.pdf] | |||
*This is made up for by using a chest-style refrigerator. How many times more efficient is a top opening vs front opening fridge? | |||
:*10-20x - [http://www.builditsolar.com/Projects/Conservation/chest_fridge.pdf] | |||
:*10x - [http://lifehacker.com/5334245/convert-a-chest-freezer-into-a-super-efficient-refrigerator] | |||
:*'''12x + easy part list''' - [https://johnlvs2run.wordpress.com/2009/10/08/chest-fridge-conversion/] | |||
*Insulation approaches max quickly after 2" of thickness for foam - see graph at bottom of - [http://www.iowafoam.com/benefits.html] | |||
=OS Projects= | |||
*OS project, stalled? - https://www.youtube.com/watch?v=LEG6UkFyRxo&feature=youtu.be | *OS project, stalled? - https://www.youtube.com/watch?v=LEG6UkFyRxo&feature=youtu.be | ||
*Hackaday build - http://hackaday.com/2015/04/03/building-your-own-mini-fridge/ | *Hackaday build - http://hackaday.com/2015/04/03/building-your-own-mini-fridge/ | ||
| Line 8: | Line 15: | ||
=Commercial= | =Commercial= | ||
*$600, 60W, 1.7 cu ft, 12v - [http://www.raneystruckparts.com/truck-fridge-built-in-12-volt-dc-refrigerator-with-freezer-crx-50/?gclid=CMKyt8i0sMwCFQcMaQodoKsMOA] | *$600, 60W, 1.7 cu ft, 12v - [http://www.raneystruckparts.com/truck-fridge-built-in-12-volt-dc-refrigerator-with-freezer-crx-50/?gclid=CMKyt8i0sMwCFQcMaQodoKsMOA] | ||
*1.7 cu ft, $200 - [https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8&client=ubuntu#q=dc+refrigerator&tbm=shop&spd=9941802997261216640] | |||
=Super Efficient (Not Peltier)= | |||
*Sundanzer - $1020 for 5.8 cu ft - Danfoss DC compressor - 4" insulation - [http://www.backwoodssolar.com/sundanzer-5-8cf-refrigerator] | |||
:*Power draw - 185 Whr per day | |||
:*Compare to 7 cu ft conversion abobe - 8 watt average - or 192 Whr per day. Same performance, about 1/5 the price. | |||
=Links= | |||
*How to build a big walk-in freezer - [http://smithmeadows.com/farm/how-to-build-a-walk-in-freezer/]. Uses 4" of insulation. By Forrest Pritchard. | |||
Latest revision as of 06:25, 28 April 2016
Introduction
- 4x less efficient than compression-based refrigerators, but may be worth it for reasons of higher simplicity or where DC only is available - [1]
- DOE publication evaluating refrigeration types - [2]
- This is made up for by using a chest-style refrigerator. How many times more efficient is a top opening vs front opening fridge?
- Insulation approaches max quickly after 2" of thickness for foam - see graph at bottom of - [6]
OS Projects
- OS project, stalled? - https://www.youtube.com/watch?v=LEG6UkFyRxo&feature=youtu.be
- Hackaday build - http://hackaday.com/2015/04/03/building-your-own-mini-fridge/
- The Survivalist Blog - [7] - includes part list; converts a cooler.
Commercial
Super Efficient (Not Peltier)
- Sundanzer - $1020 for 5.8 cu ft - Danfoss DC compressor - 4" insulation - [10]
- Power draw - 185 Whr per day
- Compare to 7 cu ft conversion abobe - 8 watt average - or 192 Whr per day. Same performance, about 1/5 the price.
Links
- How to build a big walk-in freezer - [11]. Uses 4" of insulation. By Forrest Pritchard.