ST Alpha - "The other problem with hydrogen as a fuel is that while it's energy dense per mass, it's not energy dense per volume" (Reading a Post)

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The other problem with hydrogen as a fuel is that while it's energy dense per mass, it's not energy dense per volume

Posted by Reagen Aug 4 '22, 06:16

a comparable fuel tank for hydrogen would have to be around 200L at 10000 psi, which would make fuel tank ruptures an exciting family adventure in rocket sledding.

Responses:

Probably sometimes, but mostly it’s gonna shoot out and dissipate pretty quickly. The danger is pretty comparable to gasoline, but the engineering is - mafic Aug 4, 06:38 1
- I'm less worried about explody and more nozzley. -- nm - Reagen Aug 4, 06:42
isn't pixie's sweet new ride hydrogen? -- nm - amanda Aug 4, 06:21 7
- FCEV babeee. i have (near) zero concerns about tank or station ruptures. H2's been in regular use here in CA for 10+ years with no incidents i'm aware - hollywood big shot Aug 4, 08:35
- did he get a balloon? -- nm - crash davis Aug 4, 07:06 3
  - How fun would it be to look up and see commuters going to work by hot air balloon? I mean, not fun if you're sitting in traffic, but still. -- nm - Max Aug 4, 07:30 1
    - If there was a regular helium dirigible passenger service line somewhere, I'd be interested in a ticket -- nm - crash davis Aug 4, 07:37
  - Hindenburg II -- nm - Beaker Aug 4, 07:08
- he's definitely gassy -- nm - oblique Aug 4, 06:34 1
  - and dense -- nm - budice Aug 4, 06:36

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The other problem with hydrogen as a fuel is that while it's energy dense per mass, it's not energy dense per volume

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