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Author Topic: Hydrogen Fuel  (Read 625 times)

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dmc0319

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Hydrogen Fuel
« on: January 23, 2017, 04:40:47 AM »

I'd like to get a couple of different people's inputs on these questions.

Do you believe Hydrogen is a practical fuel source?
If not, do you believe it can become one?
Why or why not?
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Babcock_Hall

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Re: Hydrogen Fuel
« Reply #1 on: January 23, 2017, 05:37:32 AM »

What do you think?  It is a Forum Rule that you must provide your attempt answer a question or give your thoughts before we can help you.
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discodermolide

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Re: Hydrogen Fuel
« Reply #2 on: January 23, 2017, 05:38:39 AM »

Nice homework question.
Think about generation.
Then think about storage and delivery.
Let's not mention safety
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Enthalpy

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Re: Hydrogen Fuel
« Reply #3 on: January 24, 2017, 09:57:14 AM »

Hydrogen fuel, you mean, for rockets? Definitely yes, for >50 years, and irreplaceable.

Oh, for other uses? That could prove to be one of the most expensive errors in human research, unless someone eventually finds a decent storage method (or until humans find an even more expensive error, of course). The progress of lithium batteries has made hydrogen less seducing in the last years.

I still see a future for hydrogen fuel: at aeroplanes. Hydrogen's energy per mass unit improves the range and flight duration. Car fuel cells are already light enough for slower aeroplanes: helicopters far better than kerosene right now, 500km/h planes easy, 1000km/h planes not quite good. Design examples there with 100kg/100kW fuel cells, the last ones with up-to-date 50kg/100kW, including my tank design for liquid hydrogen.
http://www.scienceforums.net/topic/75102-electric-helicopter/#entry748087
http://www.scienceforums.net/topic/73798-quick-electric-machines/#entry738661
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