Posted on 04/21/2022 2:39:28 PM PDT by Jonty30
A revolutionary cryogenic tank design promises to radically boost the range of hydrogen-powered aircraft – to the point where clean, fuel-cell airliners could fly up to four times farther than comparable planes running on today's dirty jet fuel.
Weight is the enemy of all things aerospace – indeed, hydrogen's superior energy storage per weight is what makes it such an attractive alternative to lithium batteries in the aviation world. We've written before about HyPoint's turbo air-cooled fuel cell technology, but its key differentiator in the aviation market is its enormous power density compared with traditional fuel cells. For its high power output, it's extremely lightweight.
(Excerpt) Read more at newatlas.com ...
When you burn hydrogen with oxygen, it forms water. You’re not “using up” any water.
The good news about burning hydrogen is that it goes up (in the literal sense) very fast. It doesn’t splash, stick to things, and ignite them. The bad news is that hydrogen can burn with an almost invisible (in visible light, not IR) flame.
At what, 20 times the volume?
Plus, for the scientifically illiterate, because you can’t mine/drill for hydrogen on earth, it is effectively an energy storage mechanism, not a source of energy.
Meaning just like your electric car, your hydrogen powered car/jet/whatever is ultimately powered by fossil fuel anyway.
Great link, thanks, that was exactly what I was wondering about.
Only if you haven't come up with a better source of electricity than fossil fuel*. Note that you can use hydrogen as a grid storage mechanism. That helps with power sources that run when they want to (= wind, solar) and power sources that can't be effectively throttled-down at night (= nuclear, coal to some extent).
*Fossil fuel can generate hydrogen directly, without going through electricity. The direct path is much more efficient, of course.
I think gasoline has about 3000 times the energy of hydrogen at STP.
Depends on your driving habits.
New Yark....
I maintain that the key to this tech is the efficient generation of hydrogen via an onboard on-demand closed-loop electrolysis system. In addition, plasma plugs similar to that which were developed by Meyers would be required among other “enhancements”.
Aren’t you using up water to release hydrogen, which will release oxygen into the atmosphere. Does this not use more water than can be recombined from free hydrogen and oxygen. I am ignorant on this stuff, feel free to laugh or poke fun at me. It just seems logical.
Less than a mile. What about you?
Woo-Hoo..... WOT. Prolly about the same.
I guess energy content isn’t everything.
“closed-loop electrolysis”
Ah, the perennial favorite of the scientifically illiterate, the perpetual motion machine. I really wish you people would post some actual designs and do the actual math instead of impotently posting your dreams of castles built on clouds.
If it "used more water," the water would have to go somewhere. Where could it go? Conservation of matter says that there's nowhere else, so the water in has to equal the water out. Of course, you're turning liquid water into water vapor ultimately, but the sun does that anyway.
I should point out that there would be some leakage of hydrogen. Some of that hydrogen would end up burning to water in the atmosphere, but most of it would probably just rise to the upper atmosphere and diffuse out into space. So, yes, in a real world system there would be some leakage of hydrogen and therefore some loss of water.
You’re comparing a gas to a liquid, though. Compare liquid to liquid or gas to gas, and the difference is much less.
“Liquid hydrogen today comes from Natural Gas...and guess what the byproduct of that process is?”
I’m sure it’s something terrible...racism?
No, you miss the point: a cleaner conscience.
“... do the actual math instead of impotently posting your dreams of castles built on clouds.”
Do math, not meth.
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