A 30 kW ammonia compressor (ˠ = 1.2) operates with an evaporator
and condenser temperatures of 10 C & 40 C, respectively. The
clearance factor is 5% with compression or adiabatic efficiency
85%, mechanical efficiency 80% & actual volumetric efficiency
75%.
Determine:
a. Draw the PH diagram indicating all enthalpy & sp. vol.
b. Clearance volumetric efficiency
c. Actual work, kJ/kg
d. Ideal COP
e. Actual COP
f. Mass of refrigerant flow, kg/s
g. Indicated work, kW
h. Brake work,...