Nomenclature

COP Coefficient of performance
COPC COP for cooling circuit
COPC cor COP for cooling circuit corrected to condensation temperature 30°C
COPF COP for freezing circuit
COPF ,cor COP for freezing circuit corrected to condensation temperature 30°C
COPF,tot COP for freezing circuit calculated as a cascade system
EtaCarnot,C Carnot efficiency for cooling circuit
EtaCarnot,F Carnot efficiency for freezing circuit
EtaCarnot,F,tot Carnot efficiency for freezing circuit calculated as a cascade system
Etotal(corrected) Energy consumption corrected to condensation temperature 30°C
Etotal (measured) Energy consumption measured
Pc Condensation pressure
P0 Evaporation pressure
Tc Condensation temperature
T0 Evaporation temperature
v Volumetric efficiency
is Isentropic efficiency

 



Version 1.0 September 2004, © Danish Environmental Protection Agency