A refrigerator works $$between40C$$ and $$300C$$. It is required to remove $$600$$ calories of heat every second in order to keep the temperature of the refrigerated space constant. The power required is (Take$$ $$1$$ cal $$=$$ $$4.2$$ $$Joules)

Question

A refrigerator works $$between40C$$ and $$300C$$. It is required to remove $$600$$ calories of heat every second in order to keep the temperature of the refrigerated space constant. The power required is (Take$$ $$1$$ cal $$=$$ $$4.2$$ $$Joules)

Infinity Learn · Accepted Answer

Given, $$T2=4$$°$$C=277$$ K, $$T1=30$$°$$C=303$$ $$KQ2=600$$ cal per second  Coefficient of performance, α$$=T2T1-T2=277303-277=27726$$. Also, α$$=Q2W$$∴ Work to be done per second $$=$$ power required $$=W=Q2$$α$$=26277$$×$$600$$ cal per second $$=26277$$×$$600$$×$$4.2$$ J per second $$=236.5$$ W

A refrigerator works between $4^{0} C$ and $30^{0} C$ . It is required to remove 600 calories of heat every second in order to keep the temperature of the refrigerated space constant. The power required is (Take 1 cal = 4.2 Joules)

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A refrigerator works between40C and 300C. It is required to remove 600 calories of heat every second in order to keep the temperature of the refrigerated space constant. The power required is (Take 1 cal = 4.2 Joules)

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A refrigerator works between $4^{0} C$ and $30^{0} C$ . It is required to remove 600 calories of heat every second in order to keep the temperature of the refrigerated space constant. The power required is (Take 1 cal = 4.2 Joules)