Question:-
A refrigerator based on reversed Car not cycle works between two such temperatures that the ratio between the low and high temperature is 0.8. If a heat pump is operated between same temperature range, then what would be its COP?
Option (A)
2
Option (B)
3
Option(C)
4
Option(D)
5
Correct Option:
(D)
Question Solution:
Given:
(T1/T2) = 0.8

(COP)p = {T2 / (T2-T1)}
= {1 / (1-T1/T2)} = (1 / 1-0.8)
(COP)p = 5
question-answer-faq-9478