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Engineering

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A vapor‐compression refrigeration system circulates Refrigerant 134a at a rate of 0.2 kg/s. The refrigerant enters the compressor at ‐10 °C, 1 bar, and exits at 8 bar. The isentropic compressor efficiency is 70%. There are no appreciable pressure drops as the refrigerant flows through the condenser and evaporator. The refrigerant leaves the condenser at 8 bar, 30°C. Ignoring heat transfer between the compressor and its surroundings, determine: (a) the rate at which heat energy is removed from the refrigerated space, in kW. (b) the coefficient of performance.

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Busiyijide Busiyijide

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Answer:

a) 30.94 KW

b) 2.34

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the solution to this problem is shown in the picture attached

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