this post was submitted on 16 Jun 2025
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The 15 metres wide battery can store a month's heat demand in summer - how does it work?

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[–] [email protected] 1 points 12 hours ago (1 children)

depends. wood stoves put out a metric shitton of heat, no matter how hot their surroundings. the more of it you capture, the less wood you need. we have a massive old stone oven that takes a week to heat up but then keeps above ambient for like two-three. it's several m^3^ in size, the house is built around it. it also keeps the house cool in summer by absorbing heat.

[–] [email protected] 1 points 11 hours ago

Oh sure the technique of storing heat in stone is valid. Again, the Finnish have used it for long time in oven design. It's possible to get modern soap stone ovens for this purpose.

https://en.wikipedia.org/wiki/Masonry_heater