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Heat Pumps

Which of the ...

Question

Which of the following curve represents the variations of coefficient of performance (COP) of Carnot refrigeration with lower temperature ( $T_{2}$ ) keeping fixed the surrounding temperature ( $T_{1}$ )?

A

3

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B

1

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C

None of these

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D

2

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Solution

The correct option is B 1

$C O P_{R} = \frac{T_{2}}{T_{1} - T_{2}} = \frac{1}{(\frac{T_{1}}{T_{2}} - 1)}$

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