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samskiter OP t1_j1cq9k9 wrote

Reply to comment by kilotesla in Why do we use phase change refrigerants? by samskiter

Nice! So your system could dynamically flex the boiling point to match the desired working range (within reason)?

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kilotesla t1_j1da7rf wrote

It could within some range. It would be best as a heat pump for heating from moderately warm temperatures up to high temperatures, perhaps 40° C up to 100° C, for example.

Note that that's also how a conventional heat pump works, with an HFC refrigerant. Let's say it's operating between 10° C and 40° C. The evaporator pressure will be set up so that the boiling point of the HFC is around 10° C, and the condenser pressure will be high enough to make the boiling point there 40° C.

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