Problem 6.33:
A standard vapor compression cycle uses tetrafluoroethane as the refrigerant. The refrigerant at the exit of the condenser is saturated liquid at 90 °F; at the exit of the evaporator it is saturated vapor at 0 °F. The cycle is powered by a compressor rated at 5 hp. The coefficient of performance of this cycle is 2.5.
a) How much heat is removed in the evaporator?
b) What is the flow rate of the refrigerant?
c) What is the entropy generation?
d) What is the efficiency of the compressor? NOTE: 1 hp = 2545 Btu/h.