Question:-
Sub cooling heat exchanger is used in a refrigeration cycle. The enthalpies at condenser outlet and evaporator outlet are 78 and 182 kJ/kg respectively. The enthalpy at outlet of isentropic compressor is 230 kJ/kg and enthalpy of sub cooled liquid is 68 kJ/kg. the COP of the cycle is
Option (A)
3.25
Option (B)
2.16
Option(C)
3.0
Option(D)
3.5
Correct Option:
(B)
Question Solution:
C.O.P = (182-68) / (230-182) = 2.375 » 2.16
question-answer-faq-9439