this post was submitted on 30 Jul 2026
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Science Memes

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[–] marcos@lemmy.world 56 points 1 day ago (2 children)

Most new clean energy does not use boiling water.

Pushing electrons? Really? Man of your talents?

[–] fullsquare@awful.systems 10 points 1 day ago (1 children)

there is a power generation scheme that uses high temperature fuel cells. optimally it could run on hydrogen only, but because it runs hot, it is able to take almost any flammable gas, along with some steam, and it forms hydrogen internally, then oxidizes it. this alone generates bulk of electricity, but offgas is hot, so it goes to heat exchanger which boils water, which then turns steam turbine

[–] grue@lemmy.world 11 points 1 day ago (1 children)

That's just burning a hydrocarbon with extra steps.

[–] fullsquare@awful.systems 10 points 1 day ago

it replaces gas turbine with a fuel cell, which is a good couple % more efficient than CCGT. still under development. there is also another variant where hot offgas is generated under pressure and expanded directly. no steam, same effect