2. Consider a heat engine that operates between high temperature reservoir at 650°C and a heat sink at 30°C. Part of the work generated by the heat engine is used to drive the refrigerator where the food compartment is kept at -12 °C in an environment of 30°C. The total heat gain to the food compartment is 2500 kJ/h and the heat rejection to the condenser is 4000 kJ/h. Determine (0.416 kW, 1.667, 2233.14 kJ/h, 2791.43 kJ/h, 732 kJ/h) a) Power input to the compressor in kW and COP of the refrigerator b) Maximum heat that is required by the heat engine to drive the refrigerator c) Maximum heat that is required by the heat engine to drive the refrigerator if there is a 20% loss of power during transmission. d) Total rate of minimum heat rejection to the environment.

2. Consider a heat engine that operates between high temperature reservoir at 650°C and a heat sink at 30°C. Part of the work generated by the heat engine is used to drive the refrigerator where the food compartment is kept at -12 °C in an environment of 30°C. The total heat gain to the food compartment is 2500 kJ/h and the heat rejection to the condenser is 4000 kJ/h. Determine (0.416 kW, 1.667, 2233.14 kJ/h, 2791.43 kJ/h, 732 kJ/h) a) Power input to the compressor in kW and COP of the refrigerator b) Maximum heat that is required by the heat engine to drive the refrigerator c) Maximum heat that is required by the heat engine to drive the refrigerator if there is a 20% loss of power during transmission. d) Total rate of minimum heat rejection to the environment.

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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