Chris Remington@beehaw.orgM to Technology@beehaw.org · 2 months 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-square11linkfedilinkarrow-up1103arrow-down11cross-posted to: futurology@futurology.todaynews@beehaw.orgtechnology@lemmy.worldenergy@slrpnk.nettechnology@lemmit.onlineglobalnews@lemmy.zipeurope@feddit.org
arrow-up1102arrow-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 · 2 months agomessage-square11linkfedilinkcross-posted to: futurology@futurology.todaynews@beehaw.orgtechnology@lemmy.worldenergy@slrpnk.nettechnology@lemmit.onlineglobalnews@lemmy.zipeurope@feddit.org
minus-squareHobbitFoot linkfedilinkEnglisharrow-up4·2 months agoThe problem with freezing water is the material expansion.
minus-squarefullsquare@awful.systemslinkfedilinkarrow-up4·2 months agothat’s no problem at all, systems like that are in use
The problem with freezing water is the material expansion.
that’s no problem at all, systems like that are in use