Repeat Prob. 11–122 if the heat exchanger provides 9.51°C of subcooling.

Data From Q#122:

The refrigeration system of Fig. P11–122 is another variation of the basic vapor-compression refrigeration system which attempts to reduce the compression work. In this system, a heat exchanger is used to superheat the vapor entering the compressor while sub cooling the liquid exiting from the condenser. Consider a system of this type that uses refrigerant- 134a as its refrigerant and operates the evaporator at −10.09°C and the condenser at 900 kPa. Determine the system COP when the heat exchanger provides 5.51°C of sub cooling at the throttle valve entrance. Assume the refrigerant leaves the evaporator as a saturated vapor and the compressor is isentropic.

Transcribed Image Text:

Condenser Compressor Evaporator OMERO