choosing a compressor for a chiller circuit. Choice: ozone-depleting R-22 with 2.45W cooling per 1W input, or ozone-safe R134a with 1.6W/W
@whitequark How does R744 compare in efficiency? I've heard it's even better.
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@RichFelker it's not too bad but the required pressures are so high that no one wants to use it after brief evaluation a few yrs ago -
@RichFelker iirc the high side pressure is 70atm? and you need a two-stage compressor too
End of conversation
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