Homework Question 5:

4.41 Refrigerant 134a enters an insulated compressor operating at steady state

as saturated vapor at -20°C with a mass flow rate of 1.2 kg/s. Refrigerant exits at 7

bar, 70°C. Changes in kinetic and potential energy from inlet to exit can be ignored.

Determine (a) the volumetric flow rates at the inlet and exit, each in m³/s, and (b)

the power input to the compressor, in kW.