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Q12.10 A refrigerator is to maintain eatables kept inside at 9o C. If room temperature is 36o C, calculate the coefficient of performance.

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Room Temperature, T1 =  36o C = 309 K

The temperature which has to be maintained inside the fridge, T2 = 9o C = 282 K

Coefficient of performance is E

\\E=\frac{T_{2}}{T_{1}-T_{2}}\\ E=\frac{282}{309-282}\\ E=\frac{282}{27}\\ E=10.4

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