Heat pumps, more than you wanted to know (2023)

Re:Heat pumps, more than you wanted to know (2023) by bluemax on Tuesday January 09, 2024 @06:46AM (#38925004)

Several companies are developing thermo acoustic heatpumps that will have some advantages over regular heatpumps. They should produce less noise, don't use greenhouse gasses and work in a wider range of temperatures.

https://www.blueheartenergy.com/ https://www.equium.fr/en/home

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Re:Heat pumps, more than you wanted to know (2023) by rihegher on Tuesday January 09, 2024 @07:32AM (#38925376)

Equium is using helium, a non renewable gas. Not a greenhouse gas but not really sustainable either.

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Re:Heat pumps, more than you wanted to know (2023) by bill38 on Tuesday January 09, 2024 @07:47AM (#38925535)

They fill the core of their heat pump with helium at 30+ bars and seal it. That's all. It's not used continuously. So not a big quantity used.

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Re:Heat pumps, more than you wanted to know (2023) by DrScientist on Tuesday January 09, 2024 @07:01AM (#38925128)

Anybody got any actual experience of these yet?

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Re:Heat pumps, more than you wanted to know (2023) by hasmanean on Tuesday January 09, 2024 @07:19AM (#38925287)

LBNL had a solid state thermoacoustic resonator the size of a coin, which I read about but never saw it in the market. It was supposed to be able to extract heat from anywhere.

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