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

Elements Of Electromagnetics
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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
is 90 % for each stage.
Find the power required to derive the compressor and C.O.P of the system.
Cond
Evap
8
C₁
C₂
Transcribed Image Text: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 is 90 % for each stage. Find the power required to derive the compressor and C.O.P of the system. Cond Evap 8 C₁ C₂
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