Q181
A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be
A.
1 kW
B.
2 kW
C.
3 kW
D.
4 kW
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
C.O.P. (heat pump) = 1 + C.O.P. (R effect) [R = Refrigeration]5 = 1 + C.O.P. (R effect)
C.O.P. (R effect) = 5 - 1.
C.O.P. (R effect) = 4.