Question 1000: Thermodynamics & KTG

Question

A refrigerator works between 4oC and 30oC. 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)

Accepted Answer

Now $$COP = {{{L_Q}} \over {Power}} = {{{T_L}} \over {{T_H} - {T_L}}}$$
$$ \Rightarrow Power = {{{L_Q} 	imes \left( {{T_H} - {T_L}} ight)} \over {{T_L}}}$$
= (600 ÃÂ 4.2) ÃÂ 26/277 = 236.53 W

Answer

236.5 W

Answer

2365 W

Answer

2.365 W

Answer

23.65 W

Thermodynamics & KTG

A refrigerator works between 4oC and 30oC. 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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