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Question -

A refrigerator is to maintain eatables kept inside at 90 C. If room temperature is 360 C, calculate the coefficient of performance.



Answer -

Temperature inside the refrigerator, T1 =90 C

= 273 + 9

= 282 K

Room temperature, T2 = 360 C

= 273 + 36

= 309 K

Coefficient of performance = (T1) / (T2 –T1)

On substituting, we get,

= 282 / (309 – 282)

We get,

= 10.44

Hence, the coefficient of performance of the given refrigeratoris 10.44

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