Sure wish they mentioned the effeciency.
Without it you should dismiss the whole article as worthless garbage
Comment on Grid-Scale Bubble Batteries Will Soon Be Everywhere
SpaceNoodle@lemmy.world 3 weeks ago
Sure wish they mentioned the effeciency.
BlackLaZoR@fedia.io 3 weeks ago
kalkulat@lemmy.world 2 weeks ago
Damned good question, and I played stump-the-search-engine for 15 minutes and it’s like they’re AVOIDING that question
it_depends_man@lemmy.world 3 weeks ago
Could be very high, even the waste heat from the compression could be used to achieve more compression and turbines get to above 90%, that all depends on the scales they’re building this at. 70% overall doesn’t seem unrealistic as an educated guess.
oxbech@feddit.dk 3 weeks ago
On their website (energydome.com) they claim “75%+” round trip efficiency, so not a bad guess!
sunbeam60@feddit.uk 3 weeks ago
That’s a hell of a lot better than most other systems. If true, and if scalable, this is a huge innovation.
fullsquare@awful.systems 3 weeks ago
compressors, turbines (like steam turbines), piping, container for liquid carbon dioxide, lots of plastic for the bubble, something for thermal storage, dry and clean carbon dioxide, these aren’t unusual or restricted resources, don’t depend on critical raw materials or anything like that
fullsquare@awful.systems 3 weeks ago
Compressed air without heat recovery is more like 30%, so this is huge
brucethemoose@lemmy.world 3 weeks ago
I was just about to bang out that they must lose a lot of heat from the compression. But apparently not! That’s amazing.
HaraldvonBlauzahn@feddit.org 3 weeks ago
No. Waste heat can by definition not be converted to mechanical work.
Otherwise, one could build a perpetuum mobile: Convert heat to mechanical work, use that work to generate heat, convert it to work again, and so on. You’d have a machine that generates energy out of nothing, and that’s not possible because of the law of energy conservation.
nooneescapesthelaw@mander.xyz 3 weeks ago
en.wikipedia.org/wiki/Recuperator