Chris Remington@beehaw.orgM to Technology@beehaw.org · 7 days agoA Finnish town is heating itself with 2,000 tonnes of crushed rock: its giant “sand battery” can cover almost a month of heating demand and has cut district heating emissions by 70%www.cnbc.comexternal-linkmessage-square10linkfedilinkarrow-up191arrow-down10cross-posted to: technology@lemmy.worldglobalnews@lemmy.zipeurope@feddit.org
arrow-up191arrow-down1external-linkA Finnish town is heating itself with 2,000 tonnes of crushed rock: its giant “sand battery” can cover almost a month of heating demand and has cut district heating emissions by 70%www.cnbc.comChris Remington@beehaw.orgM to Technology@beehaw.org · 7 days agomessage-square10linkfedilinkcross-posted to: technology@lemmy.worldglobalnews@lemmy.zipeurope@feddit.org
minus-squarefullsquarelinkfedilinkarrow-up6·7 days agoIt’s easier to freeze water than to cool rock borehole
minus-squareHobbitFoot @thelemmy.clublinkfedilinkEnglisharrow-up4·7 days agoThe problem with freezing water is the material expansion.
minus-squarefullsquarelinkfedilinkarrow-up4·7 days agothat’s no problem at all, systems like that are in use
It’s easier to freeze water than to cool rock borehole
The problem with freezing water is the material expansion.
that’s no problem at all, systems like that are in use