Aircraft retrofitted with hydrogen fuel cells could slash CO2 emissions from small planes — and potentially pave the way for hydrogen jets, new study shows.
The first hydrogen-powered planes are taking flight::undefined
It depends on whether you mean by weight or by volume.
By weight, hydrogen has an almost unbeatable energy density. It’s much higher than methanol or even gasoline.
By volume, hydrogen has a horrible energy density, several orders of magnitude lower than any modern type of battery, for example.
So if you have infinite space, hydrogen is great. But a plane does not have infinite space. So you try to compress the hydrogen or cool it down to increase the energy density. However, this will still come out at much worse than gasoline or jet fuel.
Yeah, I was thinking volume. Wasn’t aware that energy density was also calculated by weight. It makes me wonder tho, is this more “hydrogen economy” hype, or is it worth it
The big issue for aircraft is weight more so than weight. You can add a section and stretch an airplane without too much issue. Whereas the ability to lift is limited by weight and engine power.
Is hydrogen more energy dense than other net zero fuels such as methenol?
It depends on whether you mean by weight or by volume.
By weight, hydrogen has an almost unbeatable energy density. It’s much higher than methanol or even gasoline.
By volume, hydrogen has a horrible energy density, several orders of magnitude lower than any modern type of battery, for example.
So if you have infinite space, hydrogen is great. But a plane does not have infinite space. So you try to compress the hydrogen or cool it down to increase the energy density. However, this will still come out at much worse than gasoline or jet fuel.
Yeah, I was thinking volume. Wasn’t aware that energy density was also calculated by weight. It makes me wonder tho, is this more “hydrogen economy” hype, or is it worth it
The big issue for aircraft is weight more so than weight. You can add a section and stretch an airplane without too much issue. Whereas the ability to lift is limited by weight and engine power.