Compressed Air Energy Storage: Difference between revisions
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*3kW hr of energy storage at 8 bar requires 65 cubic meters of volume - [https://www.lowtechmagazine.com/2018/05/ditch-the-batteries-off-the-grid-compressed-air-energy-storage.html] | *3kW hr of energy storage at 8 bar requires 65 cubic meters of volume - [https://www.lowtechmagazine.com/2018/05/ditch-the-batteries-off-the-grid-compressed-air-energy-storage.html] | ||
**This is 510 cubic meters. But air is free. | |||
*But - if you use high pressure, you can reduce that volume down to 300 bar simply using a $300, 1800W Scuba compressor. | *But - if you use high pressure, you can reduce that volume down to 300 bar simply using a $300, 1800W Scuba compressor. | ||
*Scuba compressor on AliExpress - $300 - [https://m.aliexpress.com/item/32815880523.html?src=google&_randl_currency=USD&_randl_shipto=US&src=google&albch=shopping&acnt=494-037-6276&isdl=y&slnk=&plac=&mtctp=&albbt=Google_7_shopping&aff_platform=google&aff_short_key=UneMJZVf&gclsrc=aw.ds&&albagn=888888&albcp=9317063908&albag=94962804715&trgt=297309937645&crea=en32815880523&netw=u&device=m&albpg=297309937645&albpd=en32815880523&gclid=EAIaIQobChMIq_SpqLrF6AIVA1YMCh3CWAAcEAkYASABEgLdMvD_BwE] | *Scuba compressor on AliExpress - $300 - [https://m.aliexpress.com/item/32815880523.html?src=google&_randl_currency=USD&_randl_shipto=US&src=google&albch=shopping&acnt=494-037-6276&isdl=y&slnk=&plac=&mtctp=&albbt=Google_7_shopping&aff_platform=google&aff_short_key=UneMJZVf&gclsrc=aw.ds&&albagn=888888&albcp=9317063908&albag=94962804715&trgt=297309937645&crea=en32815880523&netw=u&device=m&albpg=297309937645&albpd=en32815880523&gclid=EAIaIQobChMIq_SpqLrF6AIVA1YMCh3CWAAcEAkYASABEgLdMvD_BwE] | ||
*80 cu ft tanks cost $200. That is 2 cubic meters. They are rated for 3000 psi. Standard is 200 bar [https://www.google.com/search?q=what+is+pressure+is+nside+scuba+tank&oq=what+is+pressure+is+nside+scuba+tank&aqs=chrome..69i57j0l3.9658j0j4&client=ms-android-verizon&sourceid=chrome-mobile&ie=UTF-8] | *80 cu ft tanks cost $200. That is 2 cubic meters. They are rated for 3000 psi. Standard is 200 bar [https://www.google.com/search?q=what+is+pressure+is+nside+scuba+tank&oq=what+is+pressure+is+nside+scuba+tank&aqs=chrome..69i57j0l3.9658j0j4&client=ms-android-verizon&sourceid=chrome-mobile&ie=UTF-8] | ||
*For DIY - take schedule 80 steel pipe. | |||
Revision as of 19:52, 31 March 2020
- 3kW hr of energy storage at 8 bar requires 65 cubic meters of volume - [1]
- This is 510 cubic meters. But air is free.
- But - if you use high pressure, you can reduce that volume down to 300 bar simply using a $300, 1800W Scuba compressor.
- Scuba compressor on AliExpress - $300 - [2]
- 80 cu ft tanks cost $200. That is 2 cubic meters. They are rated for 3000 psi. Standard is 200 bar [3]
- For DIY - take schedule 80 steel pipe.