this post was submitted on 13 Mar 2025
36 points (95.0% liked)

Solarpunk technology

2898 readers
20 users here now

Technology for a Solar-Punk future.

Airships and hydroponic farms...

founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
[–] CrimeDad@lemmy.crimedad.work 6 points 2 months ago (18 children)

Why run ammonia when you can just run liquid hydrogen? Why run liquid hydrogen when you can just run a nuclear reactor?

[–] thedeadwalking4242@lemmy.world 2 points 2 months ago (7 children)
[–] CrimeDad@lemmy.crimedad.work 4 points 2 months ago (6 children)

It does not leak like crazy. I know because I have experience engineering and operating high pressure electrolysis, storage, and fueling systems for hydrogen. Even when it does leak, what's nice about hydrogen is that it's not toxic to humans or pollutive to the environment, unlike ammonia or fossil fuels. Hydrogen leaks are easily mitigated with proven detection and ventilation techniques.

[–] kevinhippert@c.im 0 points 2 months ago (2 children)
[–] CrimeDad@lemmy.crimedad.work 2 points 2 months ago

That is an interesting article, but the authors are clear that they don't know what to expect for hydrogen leakage in a developed hydrogen economy. Sure, hydrogen might be a greenhouse gas, but you can't really compare it to carbon dioxide because that's a waste product that we actively dispose of to the atmosphere. You can't really compare it to methane either because it's naturally abundant and the LEL is much higher. Relatively leaky valves and fittings are unfortunately acceptable in natural gas service. In other words, hydrogen leakage is barely tolerable, so we have no choice but to employ technology and techniques to prevent it.

[–] humanspiral@lemmy.ca 2 points 2 months ago

The GHG "problem" of H2 is that it competes with methane for breakdown of methane in atmosphere. If we use/leak less methane, then problem solved.

load more comments (3 replies)
load more comments (3 replies)
load more comments (13 replies)