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In a mechanical refrigerator, the low temperature coils are at a temperature of – $25^{0} C$ and the compressed gas in the condenser has a temperature of $27^{0} C .$ The theoretical coefficient of performance is

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detailed solution

Correct option is C

k=T2T1−T2=273−25(273+27)−(273−25)= =248300−248 =24852 = 4. 76

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In a mechanical refrigerator, the low temperature coils are at a temperature of – 250C and the compressed gas in the condenser has a temperature of 270C. The theoretical coefficient of performance is

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In a mechanical refrigerator, the low temperature coils are at a temperature of – $25^{0} C$ and the compressed gas in the condenser has a temperature of $27^{0} C .$ The theoretical coefficient of performance is