SOPEEC Refrigeration Operator A Practice Questions - SOPEEC Refrigeration Operator Class A Exam

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An ammonia refrigeration system is required to provide a cooling capacity of 150 kW. The evaporator exit enthalpy is 1460 kJ/kg and the liquid entering the expansion valve has an enthalpy of 360 kJ/kg. What is the required mass flow rate of the refrigerant in kg/s?

0.103 kg/s 0.136 kg/s 0.417 kg/s 0.733 kg/s

Correct Answer:

0.136 kg/s

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