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smallscaleH2 · 07-13-2017, 05:37 AM

A question I had was how much hydrogen gas (and at what pressure !) equals 1 liter of gasoline. Wikipedia mentions gasoline has 33,41 kWh per gallon (or hence 125 kWh per liter) and (idealhy.eu mentions that) hydrogen gas contains 0,003 kWh per liter (at a pressure of 1 bar). I would thus assume that to attain a same amount of energy (125 kWh per liter), I'd need to use a 41666 bar compression on that 1 liter tank.

Is this actually correct ? I don't see where I made a mistake, yet such kind of pressures are not used in everyday life (the biggest compression rate used is some 700 bar).

Can anyone verify whether my calculation is correct or not ?

07-13-2017, 05:37 AM	#1 (permalink)
smallscaleH2 EcoModding Lurker Join Date: Jul 2017 Location: Planet Earth Posts: 43 Thanks: 3 Thanked 0 Times in 0 Posts	H2 equivalent to 1 liter of gasoline A question I had was how much hydrogen gas (and at what pressure !) equals 1 liter of gasoline. Wikipedia mentions gasoline has 33,41 kWh per gallon (or hence 125 kWh per liter) and (idealhy.eu mentions that) hydrogen gas contains 0,003 kWh per liter (at a pressure of 1 bar). I would thus assume that to attain a same amount of energy (125 kWh per liter), I'd need to use a 41666 bar compression on that 1 liter tank. Is this actually correct ? I don't see where I made a mistake, yet such kind of pressures are not used in everyday life (the biggest compression rate used is some 700 bar). Can anyone verify whether my calculation is correct or not ?