Compressed Air Storage Calculations: Difference between revisions
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*0,75 hp $200 30 cfm [https://www.ebay.com/itm/Gast-2Am-Ncc-96-Air-Motor-0-75-Hp-30-Cfm-3000-Rpm/224284004034?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20201210111314%26meid%3D51badb5ba31a4cfba8919d28689fa4d1%26pid%3D101195%26rk%3D1%26rkt%3D12%26mehot%3Dpf%26sd%3D164136369915%26itm%3D224284004034%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLv5PairwiseWebWithDarwoV3BBEV2b&_trksid=p2047675.c101195.m1851] | *0,75 hp $200 30 cfm [https://www.ebay.com/itm/Gast-2Am-Ncc-96-Air-Motor-0-75-Hp-30-Cfm-3000-Rpm/224284004034?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20201210111314%26meid%3D51badb5ba31a4cfba8919d28689fa4d1%26pid%3D101195%26rk%3D1%26rkt%3D12%26mehot%3Dpf%26sd%3D164136369915%26itm%3D224284004034%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLv5PairwiseWebWithDarwoV3BBEV2b&_trksid=p2047675.c101195.m1851] | ||
*Rotary vane, 1.8 hp $200 [https://www.amazon.com/4AM-NRV-92-1-80HP-ROTARY-PNEUMATIC-D414496/dp/B00YQ79ZAY/ref=zg_bs_6374816011_8?_encoding=UTF8&psc=1&refRID=33XPE9NQWWJ9M0CCSTX1] | *Rotary vane, 1.8 hp $200 [https://www.amazon.com/4AM-NRV-92-1-80HP-ROTARY-PNEUMATIC-D414496/dp/B00YQ79ZAY/ref=zg_bs_6374816011_8?_encoding=UTF8&psc=1&refRID=33XPE9NQWWJ9M0CCSTX1] | ||
*[[Radial | *[[Radial Piston Motor]] - 20x more efficient at full load than rotary! [https://ptm-mechatronics.com/ueberzeugender-effizienztest-beim-groessten-lackhersteller-deutschlands/] | ||
=Cylinder Sourcing= | =Cylinder Sourcing= | ||
Revision as of 02:09, 9 February 2021
Calculations for a 1kWhr System
- From Compressed Air Energy Storage results, it takes 170 cubic meters of air to deliver 1kWhr of usable stored energy.
Calculator
See https://www.tribology-abc.com/abc/thermodynamics.htm
According to the calculator, a 50 l tank of air at 3000 psi will release about 0.5kWhr via adiabatic expansion, and 2.5x this with isothermal expansion.
Rough Calculations
- Air tools require 30 cfm for 1 hp [1]
- A 300 cuf tank thus gives 10 minutes, about, of 1 hp power.
- 6 cylinders would thus give 1 hp hr. Not great, but we can get much better efficiencies from a better air engine.
Air Engine
- Rotary air engine - [2]
- 0,75 hp $200 30 cfm [3]
- Rotary vane, 1.8 hp $200 [4]
- Radial Piston Motor - 20x more efficient at full load than rotary! [5]
Cylinder Sourcing
- Firefighter supply - 300 cf $300 [6]
- 250 cf - $285 [7]
- 250 cf = $330 [8] K size?
- T-size 300 cf - [9]
- T goes up to 390 cf - [10]
Compressor
- Scuba compressor - $243, 1800W - [11]