[Equest-users] eQuest heat pump performance curves

Fernando Varela fvarela at ind.uned.es
Tue Nov 17 02:04:22 PST 2015


Dear users:

I've noticed that eQuest heat pump performance curves:

ChlrHPAirHeatCap-fHW&39+
ChlrHPAirHeatCap-fHW&39-

which refer, respectively, to the temperature capacity factor of the heat
pump in normal and defrost mode, seem to be exchanged. This is,
ChlrHPAirHeatCap-fHW&39+ curve seems to be the defrost mode curve, and
ChlrHPAirHeatCap-fHW&39- the curve regarding to normal mode.

I've plotted (with fixed condensing temperature) both capacities varying
exterior temperature, and observing the results taking the curves in the
opposite way as it shoud be (below 39ºF,ChlrHPAirHeatCap-fHW&39+, and
ChlrHPAirHeatCap-fHW&39- above 39ºF ), the resulting HP capacity curve
seems more like it should be.

Am I doing something wrong?

Thank you in advance.

*Fernando Varela Díez*
Dpto. Ingeniería Energética - ETSI Industriales
Email: fvarela at ind.uned.es
Tlf: 91 398 6468

Universidad Nacional de Educación a Distancia (UNED)
C/ Juan del Rosal, 12. Despacho 2.20
Ciudad Universitaria, 28040, Madrid
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