Propane Tank: Difference between revisions
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*1000 gallon propane tank - used at $1000, weighs 1700 lb empty. | *1000 gallon propane tank - used at $1000, weighs 1700 lb empty. | ||
*New $2700 - [https://www.kleen-ritecorp.com/p-37889-1000-gallon-above-ground-propane-tank.aspx]. New $3000 [https://homeguide.com/costs/propane-tank-cost] | |||
*Tank empty weights - [http://www.missiongas.com/lpgastankdimensions.htm]. 870 lb for 500 gal. | *Tank empty weights - [http://www.missiongas.com/lpgastankdimensions.htm]. 870 lb for 500 gal. | ||
*500 gal is 1.9 cu m. | *500 gal is 1.9 cu m. | ||
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*If we have 290 grams generated/day for $3500 of off-the-shelf electrolyzer as at [[Hydrogen Compression]] - then we need only 2 bar pressure in the 500 gallon tank. This pressure comes readily from the electrolyzer, so no pumping is needed. | *If we have 290 grams generated/day for $3500 of off-the-shelf electrolyzer as at [[Hydrogen Compression]] - then we need only 2 bar pressure in the 500 gallon tank. This pressure comes readily from the electrolyzer, so no pumping is needed. | ||
*For one gallon gas equivalent - we need 6-7 bar of pressure in a 500 gal tank. | *For one gallon gas equivalent - we need 6-7 bar of pressure in a 500 gal tank. | ||
*Thus, here we see how a single propane tank suffices for hydrogen storage of 3kWhr equivalent using a [[Honda EU1000]] generator - at 6-7 bar. And 6kWhr at its full pressure rating! And about 1.5 kWhr equivalent at 2 bar. | |||
Latest revision as of 02:25, 14 February 2021
- 1000 gallon propane tank - used at $1000, weighs 1700 lb empty.
- New $2700 - [1]. New $3000 [2]
- Tank empty weights - [3]. 870 lb for 500 gal.
- 500 gal is 1.9 cu m.
- 1 cu m of hydrogen is 82 grams, so we have almost 160 grams stored in a 500 gal tank.
- Normal propane tank pressure is up to 200 psi - [4]
- 200 psi is 13.6 atm
- A 500 gal propane tank can store 1.1 kg of hydrogen. Thiis is 1.1 gallon gasoline equivalent.
- If we have 290 grams generated/day for $3500 of off-the-shelf electrolyzer as at Hydrogen Compression - then we need only 2 bar pressure in the 500 gallon tank. This pressure comes readily from the electrolyzer, so no pumping is needed.
- For one gallon gas equivalent - we need 6-7 bar of pressure in a 500 gal tank.
- Thus, here we see how a single propane tank suffices for hydrogen storage of 3kWhr equivalent using a Honda EU1000 generator - at 6-7 bar. And 6kWhr at its full pressure rating! And about 1.5 kWhr equivalent at 2 bar.