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A comment on Heat pumps, more than you wanted to know (2023). Parent comment

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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