Question:-
A heat pump works on a reversed Carnot cycle. The temperature in the condenser coils is 27° C and that in the evaporator coils is – 23°C. For a work input of 1 kW, how much is the heat pumped?
Option (A)
1 kW
Option (B)
5 kW
Option(C)
6 kW
Option(D)
None of the above
Correct Option:
(C)
Question Solution:
C.O.P = {T2 / (T2-T1)} = {300 / (300-250)} = 6
C.O.P. = Q2/Win
Required heat = 6 x 1 = 6kW
question-answer-faq-9522