The figure shown represents a refrigeration system works with R-134a as a refrigerant to produce 20 T.R. The evaporator, flash sub-cooler and condenser temperatures are respectively -23 °C, 0 °C and 42 C. The liquid refrigerant leaves the condenser saturated and it is sub-cooled 7 °C in the liquid flash sub-cooler. Vapor leaves the evaporator coil with 5 °C superheated. Adiabatic compression efficiency s 90 % for each stage. Find the power required to derive the compressor and C.O.P of the system. Cond Evap 8 C₁ C₂

The figure shown represents a refrigeration system works with R-134a as a refrigerant to produce 20 T.R. The evaporator, flash sub-cooler and condenser temperatures are respectively -23 °C, 0 °C and 42 C. The liquid refrigerant leaves the condenser saturated and it is sub-cooled 7 °C in the liquid flash sub-cooler. Vapor leaves the evaporator coil with 5 °C superheated. Adiabatic compression efficiency s 90 % for each stage. Find the power required to derive the compressor and C.O.P of the system. Cond Evap 8 C₁ C₂

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter41: Troubleshooting

Section: Chapter Questions

Problem 8RQ: When the outside ambient air temperature is 90F, the temperature of the condensing refrigerant in a...

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