News for hackers. Stuff that matters.

A comment on Gravitricity – Fast, long-life energy storage. Parent comment

Re:Gravitricity – Fast, long-life energy storage by mekkkkkk on Wednesday September 09, 2020 @09:09AM (#24420599)
You would need to supply a lot of power just to maintain a vacuum and levitating your flywheel. Not sure this solution would be very effective. Maybe with superconductors, but then cooling is your problem instead.
[ Parent | on HN ]
Re:Gravitricity – Fast, long-life energy storage by teekert on Wednesday September 09, 2020 @09:21AM (#24420702)
Or use normal magnets (non-electro magnets) The vaccuum, sure, this may take some energy depending on the insulation.
[ Parent | on HN ]