a commercial refrigerator with refrigerant 134a as the working fluid i
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at-35 C by rejecting waste heat to cooling water that enters the condenser at 18 C at a rate of 0.25 kg/s and leaves at 26C. The refrigerant enters the condenser at 1.2 MPa and 50°C and leaves at the same pressure sub cooled by 5°C. It the compressor consumes 3.3 kW of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, () the COP, and () the minimum power input to the compressor for the same refrigeration load.
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