News for hackers. Stuff that matters.

A comment on Cement recycling method could help solve one of the big climate challenges. Parent comment

Re:Cement recycling method could help solve one of the big c... by organsnyder on Friday May 24, 2024 @08:32AM (#40465518)
> 1.44 gigajoules (0.4MWh) is required for 1 ton of steel. In theory.

That's actually a lot less than I thought it would be. My smallish (6kW) solar system on my garage has generated 20MWh in the ~3.5 years it's been operating. I'm sure 50 tons (in theory) of steel isn't huge by industrial standards, but that's more than I'd expect from a residential array in Michigan.

[ Parent | on HN ]
Re:Cement recycling method could help solve one of the big c... by logtempo on Friday May 24, 2024 @09:28AM (#40466059)
It's a little bit more than the energy of a "normal" lightning, according to wikipedia^T^M

One of the side problem is energy density. Your garage can deliver 6kWh at best, but it can't deliver 12kWh for 30min.

[ Parent | on HN ]