3 ms·
Liquid hydrogen is really, really, bad as a fuel. The energy density per mass is very high, but it's also the least dense gas, so the volumetric energy density
by henrikschroder 8y ago
Liquid hydrogen is really, really, bad as a fuel.
The energy density per mass is very high, but it's also the least dense gas, so the volumetric energy density is absolute crap, even at high pressure. A bucket of kerosene contains a lot more hydrogen atoms than a bucket of liquid hydrogen, and unlike the hydrogen, it's safe to keep at room temperature, at normal pressure, and it's neither corrosive, flammable, or explosive.
- scrumbledober 8y agoI would say kerosene is flammable...
- supermatt 8y agoFlammable has a very specific definition - it must be easily ignited at room temperature. Kerosene is not easily ignited at room temperature (e.g. you couldn't light a puddle of it with a match), so it is not considered "flammable". It does burn at room temperature though, so it is considered "combustible"