84
submitted 1 month ago by Dadifer@lemmy.world to c/science@lemmy.world
(page 2) 29 comments
sorted by: hot top controversial new old
[-] Kolanaki@pawb.social 2 points 1 month ago* (last edited 1 month ago)

I think I understand how the battery where they drop a big weight down a mountain works; how do these work? Or how does it compare in effectiveness as I assume it's probably the same principle?

load more comments (2 replies)
[-] JennyLaFae@lemmy.blahaj.zone 1 points 1 month ago
[-] AA5B@lemmy.world 1 points 1 month ago

Tidal power probably needs shallow water while these would be great in deep water

[-] JennyLaFae@lemmy.blahaj.zone 1 points 1 month ago

https://en.m.wikipedia.org/wiki/Wave_power

They can do wave power deep sea buoys then :)

They're going to...pull a vacuum in a concrete sphere deep underwater. And then use the force of water being sucked back in to turn a turbine.

...sure.

[-] Impronoucabl@lemmy.world 1 points 1 month ago

Interesting concept, but not very scalable. It's basically a reversed dam - when it's full, there's 0m head of water. Then with excess energy, you lower the level inside, storing the energy in the water outside. E.g -2m head. Water then flows in to equalise head, and doing so, regenerates electricity. Adding depth to supercharge pressure differentials is a good idea, although I wonder how they limit the flow rate, or otherwise prevent cavitation shocks each cycle.

Could be useful as a private industrial battery, but a dam would still be better on an infrastructural level.

[-] pixeltree@lemmy.blahaj.zone 1 points 1 month ago

Dams do have their own significant challenges with habitat destruction and displacing people and silt buildup

load more comments (18 replies)
[-] MonkderVierte@lemmy.ml 0 points 1 month ago* (last edited 1 month ago)

Why not submerge a tank with a hole at the bottom and blow air in the tank via a hose to store energy?

load more comments (1 replies)
load more comments
view more: ‹ prev next ›
this post was submitted on 11 May 2025
84 points (98.8% liked)

science

19450 readers
143 users here now

A community to post scientific articles, news, and civil discussion.

rule #1: be kind

founded 2 years ago
MODERATORS