The refrigeration cycle shown in Fig. 10.18 used R134a as the working fluid. The following data were measured at each state:

State 1: 120 kPa. x15 1.0
State 2: 1200 kPa, 60 8C
State 3: 1190 kPa.58 8C
State 4: 1170 kPa. 44 8C
State 5: 1160 kPa, 43 8C
State 6: 130 kPa
State 7: 128 kPa, x75 0.42
State 8: 122 kPa. x85 0.95
Assuming an adiabatic compressor, determine the compressor efficiency and the coefficient of performance of a refrigerator.

Transcribed Image Text:

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