The vapour compression cycle below (Figure Q4) utilises the refrigerant R134a flowing at 0.05 kg s¹. Assuming that the compression is adiabatic and reversible. If the actual input power to the compressor is 2 kW, determine the following: a. The theoretical input power to the compressor and the heat transfer (4) to the evaporator. Take the enthalpies h₁, h₂, and h3 to be 238.41, 263.68 and 81.5 kJ kg-¹, respectively. b. The coefficient of performance (COP) based on your answer to (a). c. The compressors mechanical efficiency. d. The COP based on the actual power input. P@ 5.673 bar 3 T@ 15 °C 4 P@ 0.8071 bar T@ -35 °C Warm condenser Cold evaporator Dout in 2 P@5.673 bar T@ 50 °C Compressor 1 P @ 0.8071 bar T@ -20 °C

The vapour compression cycle below (Figure Q4) utilises the refrigerant R134a flowing at 0.05 kg s¹. Assuming that the compression is adiabatic and reversible. If the actual input power to the compressor is 2 kW, determine the following: a. The theoretical input power to the compressor and the heat transfer (4) to the evaporator. Take the enthalpies h₁, h₂, and h3 to be 238.41, 263.68 and 81.5 kJ kg-¹, respectively. b. The coefficient of performance (COP) based on your answer to (a). c. The compressors mechanical efficiency. d. The COP based on the actual power input. P@ 5.673 bar 3 T@ 15 °C 4 P@ 0.8071 bar T@ -35 °C Warm condenser Cold evaporator Dout in 2 P@5.673 bar T@ 50 °C Compressor 1 P @ 0.8071 bar T@ -20 °C

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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