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Conservation of Energy

For the given...

Question

For the given reverse Brayton cycle, the COP of the heat pump is

A

1

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B

1.5

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C

0.9

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D

2.4

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Solution

The correct option is D 2.4
$(C O P)_{H P} = \frac{h_{2} - h_{3}}{(h_{2} - h_{1}) - (h_{3} - h_{4})} = \frac{500 - 320}{(500 - 300) - (320 - 210)}$

$(C O P)_{H P} = 2.4$

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