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Question

An ideal refrigerator is operating between 37 C and 13 C. The power required per ton of refrigerator is

A
1.2 kW
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B
0.9 kW
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C
0.4 kW
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D
0.67 kW
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Solution

The correct option is D 0.67 kW

TH=273+37=310 K

TL=27313=260 K

COP =RCPin=TLTHTL

3.5Pin=260310260

Pin=3.5×50260=0.673 kW

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