Refrigerant R-12 enters the compressor of a refrigerator at 140 kPa, -10oC at a rate of 0.3 m3/min and leaves at 1 MPa. The compression process is isentropic. The refrigerant enters the throttling valve at 0.95 MPa, 30oC and leaves the evaporator as saturated vapor at -18.5oC.
(a) Show the cycle on a T-s diagram with respect to saturation lines, determine
(b) The power input to the compressor,
(c) The rate of heat removal from the refrigerated space,
(d) The pressure drop and rate of heat gain in the line between the evaporator and compressor.