In a cooling machine that uses R-134a as a refrigerant and operates according to the ideal vapor compression refrigeration cycle, the cooled environment is kept at -30 °C and the condensation temperature entering the condenser at 18 °C with a flow rate of 0.25 kg/s and leaving the water at 26 °C. are given. The refrigerant enters the condenser at a pressure of 1.2 MPa and 65 °C and exits at 42 °C. The inlet condition of the compressor is 60 kPa and -34 ° C, and it gains 450 W of heat from the environment during the compression process. Accordingly, calculate (a) dryness fraction of the refrigerant in the evaporator inlet (b) the cooling capacity (c) the COP value of the cooling system.

In a cooling machine that uses R-134a as a refrigerant and operates according to the ideal vapor compression refrigeration cycle, the cooled environment is kept at -30 °C and the condensation temperature entering the condenser at 18 °C with a flow rate of 0.25 kg/s and leaving the water at 26 °C. are given. The refrigerant enters the condenser at a pressure of 1.2 MPa and 65 °C and exits at 42 °C. The inlet condition of the compressor is 60 kPa and -34 ° C, and it gains 450 W of heat from the environment during the compression process. Accordingly, calculate (a) dryness fraction of the refrigerant in the evaporator inlet (b) the cooling capacity (c) the COP value of the cooling system.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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