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sabine

17,693 Posts.

3692

06/07/22

12:51

Post #: 62399104
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Originally posted by watso ↑

maybe fill the large thermos with sand instead .. it seems that sand can store heat for ages at 500C instead of water at 100C ..

The sand is very effective at storing heat, and can reach a temperature of 500°C just by passing some low-cost electricity through it. Sand particles can undergo reflective heating - a heating method that results in high temperatures with minimal input.

The founders of the company that made this 'sand battery' have installed it in the town of Kankaanpää in Finland. It is being used to warm water for the district, and is pumped to homes, offices, and swimming pools, according to BBC.

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But WOW watso!
Why do they not?
Thermos flasks are the FUTURE!

And that Polar Night Energy company is amazing
https://polarnightenergy.fi/

And it works with AUSTRALIAN sand too!

….
People can also use those two ‘ingredients’ (sand+thermos) to cook up a sous vide!
https://www.eater.com/2018/6/6/17390354/beach-sous-vide-cooking-video-thermos

Thank you watso for such an interesting topic!

cheers
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