In a mechanical refrigerator, the low temperature coils are at a temperature of - 230C and the compressed gas in the condenser has a temperature of 270C. The theoretical coefficient of performance is
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a
5
b
8
c
6
d
6.5
answer is A.
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Detailed Solution
Coefficient of performance K = T1T1-T2 = (273-23)(273+27)-(273-23) = 250300-250 = 25020 = 5