this post was submitted on 10 Aug 2023
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[–] [email protected] 0 points 1 year ago (2 children)

tf wrote that title.. nuclear is defacto renewable

[–] [email protected] -1 points 1 year ago (1 children)

No it's not. That's just delusional. All the ideas of a sustainable uranium fuel cycle are based on non-existent technology. Uranium is a finite resource and we have nowhere near enough of it to power the world, even if you ignore all the other problems.

[–] [email protected] 0 points 1 year ago (1 children)

there is enough U238 to last until we get there. except if you think fusion is more than 500 years away (yes, that number is out of my ass)

[–] [email protected] -1 points 1 year ago

U238 is not fissile so that's not very useful.

[–] [email protected] 0 points 1 year ago (1 children)

No, it's zero emission but not renewable.

Nuclear fission is actually by definition the least renewable energy source. Even coal and oil are renewable on long enough time scales. But there will never be more uranium than there is right now.

We actually don't have that much of it if we consider the long term future, only a thousand years or so. So nuclear is intended to be a bridge to eventual full renewable power generation and storage, an essential component in the present day but it's still a bridge.

Another thing to consider is that nuclear is the only power source that works in deep space away from the Sun. So if we're serious about exploring the solar system or further, we'd be best not to burn up all of our fissionable material right away.

[–] [email protected] 0 points 1 year ago (1 children)

Nuclear fission is actually by definition the least renewable energy source

But if you go according the strict physical principle every energy source is non-renewable

The sun fuses a finire amount of hydrogen, earth has a finire amount of latent heat, the moon a finire amount of gravitational inertia etc.

And there's a little paradox if you think about it, how can fusion be non-renewable but solar, that use radiation from the sun fusion, be renewable?

[–] [email protected] -1 points 1 year ago

Fission and fusion are two different things.