A commercial refrigerator with refrigerant 134a as the working fluid is used to keep the refrigerated...
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A commercial refrigerator with refrigerant 134a as the workingfluid is used to keep the refrigerated space at TL = -35°C byrejecting waste heat to cooling water that enters the condenser at18°C at a rate of 0.25 kg/s and leaves at 26°C. The refrigerantenters the condenser at 1.2 MPa and 50°C and leaves at the samepressure and 41.3°C. If the compressor consumes 3.3 kW of power,determine (a) the mass flow rate of the refrigerant, (b) therefrigeration load, (c) the COP, and (d) the minimum power input tothe compressor for the same refrigeration load (e) find out thevolume flow rate of refrigerant at the inlet of the condenser inL/min. Assume Th = 18 oC.
A commercial refrigerator with refrigerant 134a as the workingfluid is used to keep the refrigerated space at TL = -35°C byrejecting waste heat to cooling water that enters the condenser at18°C at a rate of 0.25 kg/s and leaves at 26°C. The refrigerantenters the condenser at 1.2 MPa and 50°C and leaves at the samepressure and 41.3°C. If the compressor consumes 3.3 kW of power,determine (a) the mass flow rate of the refrigerant, (b) therefrigeration load, (c) the COP, and (d) the minimum power input tothe compressor for the same refrigeration load (e) find out thevolume flow rate of refrigerant at the inlet of the condenser inL/min. Assume Th = 18 oC.
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