this post was submitted on 29 Sep 2024
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Science

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To make solar power viable, we need a solution for overnight energy storage.

Batteries are complicated.

Do you know what isn't? Water go up. stonks-up

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[–] Sausage@hexbear.net 7 points 2 months ago (3 children)

Isn’t the salt very corrosive?

[–] reallyzen@lemmy.ml 6 points 2 months ago* (last edited 2 months ago) (1 children)

Well, it's in a tank. Atop a 250m high tower. Smack in the centre of a ring of mirrors focusing all their heat on it. Liquified to generate steam.

I think the "corrosive" part is the least of the issues here.

[–] Sausage@hexbear.net 5 points 2 months ago

Just something I’ve heard from some people about molten salt.

[–] TankieTanuki@hexbear.net 3 points 2 months ago (1 children)
[–] Sausage@hexbear.net 4 points 2 months ago* (last edited 2 months ago) (1 children)
[–] TankieTanuki@hexbear.net 2 points 2 months ago (1 children)
[–] Sausage@hexbear.net 4 points 2 months ago (1 children)

I guess cleaning up after a huge salt spill isn’t its also probably terrible for the ground when it leaks. From reading Wikipedia it also uses an obscene amount of fresh water.

[–] TankieTanuki@hexbear.net 2 points 2 months ago (1 children)
[–] Sausage@hexbear.net 3 points 2 months ago

I mean it also contains salt ;) as I said salt is corrosive sea water has 35 parts per thousand of salt in it and look how corrosive that is. Here we are talking about hot molten salt…

[–] Collatz_problem@hexbear.net 2 points 2 months ago (2 children)

No, saltwater is corrosive, pure salt is not.

[–] Sausage@hexbear.net 3 points 2 months ago (1 children)

Cool good to know, but why do they need to keep cleaning the pipes?

[–] Collatz_problem@hexbear.net 2 points 2 months ago

Some of molten salt crystallizes on pipe walls, because they are colder, and it makes the pipe narrower.

[–] Sausage@hexbear.net 2 points 2 months ago (1 children)

https://www.sciencedirect.com/science/article/abs/pii/S030645492100801X

Just from reading here a bit there seems to be some corrosion though. My chemistry is to shit atm to understand it though

[–] Collatz_problem@hexbear.net 2 points 2 months ago

making it necessary to mitigate corrosion by either purifying the salt, controlling its redox potential in a reducing state, or using redox buffers

The salt is not pure enough, it seems.