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Vapor compression cycle performance
1- Effect of evaporation pressure “ or temperature”
for the following figs:R-22, 4.5% clearance, 50 L/s
displacement rate and 35 C condensing temperature
a - Volumetric efficiency and mass flow rate
B- Specific work and compressor power
C- Refrigeration effect and refrigeration capacity
D- C.O.P and volume flow rate/unit capacity
2- Effect of condensing pressure “ temperature”
• for the following figs:R-22, 4.5% clearance, 50
L/s displacement rate and -20 C evaporating
temperature
A- Volumetric efficiency and mass flow rate
B- Refrigeration effect and refrigeration capacity
C- Specific work and compressor power
3- Effect of pressure ratio- 1- volumetric efficiency
4- Variation of discharge temperature with condensing pressure” temperature”
isentropic compression from saturated vapor at 0 C