4 ms·
> You could have a hydrogen BBQ, but the tank would probably have to be much larger for the same amount of burn time. Isn't the opposite true? I mean, hydrogen
by badosu 9y ago
> You could have a hydrogen BBQ, but the tank would probably have to be much larger for the same amount of burn time.
Isn't the opposite true? I mean, hydrogen at 700 bar has a specific energy of 142 MJ/kg while hydrocarbons in general have less than 60 MJ/kg.
- dmoy 9y agoYup but propane is 20x denser than hydrogen, so even if you have 2x energy per weight, you have 0.1x energy per volume. Or something like that.
- badosu 9y agoGotcha, thanks!
- shmolyneaux 9y agoNo, hydrogen gas is less dense than hydrocarbons (at the same pressure) since it has a lower molar mass (volume is inversely proportional to the molar mass).
- deleted 9y ago[deleted]