A space is kept at –15°C by a vapor-compression

Chapter 11, Problem 27P

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Problem 27P

A space is kept at –15°C by a vapor-compression refrigeration system in an ambient at 25°C. The space gains heat steadily at a rate of 3500 kJ/h and the rate of heat rejection in the condenser is 5500 kJ/h. Determine the power input, in kW, the COP of the cycle and the second-law efficiency of the system.

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