Carnot 'theoretical COP' from which values?

[Timbones (Tim)]

I don’t have an answer, but this related topic may be of interest:

Is anyone monitoring condenser and evaporator temperatures?

I’m doing a bit of work on the dynamic heat pump simulator here: Dynamic heat pump simulator . I’m looking for real world data on: The difference between the condensing temperature and the flow/outlet water temperature. The difference between the evaporator temperature and the outside air temperature. and crucially how these DT’s vary with load. @johncantor gave me a rule of thumb for typical differences: The condensing temperature is typically +2K above the flow temperature The evaporato…