The high temperature heat source for a cyclic heat engine is a SSSF heat exchanger where R 134a enters at 80 61616 C, saturated vapor, and exits at 80 61616 C, saturated liquid at a flow rate of 5 kg s Heat is rejected from the heat engine to a SSSF heat exchanger where air enters at 150 kPa and am...

CV R134a Heat Exchanger MR134a 5 kgs Inlet T 80C sat ...

The high-temperature heat source for a cyclic heat engine is a SSSF heat exchanger where R-134a enters

Question:

The high-temperature heat source for a cyclic heat engine is a SSSF heat exchanger where R-134a enters at 80C, saturated vapor, and exits at 80C, saturated liquid at a flow rate of 5 kg/s. Heat is rejected from the heat engine to a SSSF heat exchanger where air enters at 150 kPa and ambient temperature 20C, and exits at 125 kPa, 70C. The rate of irreversibility for the overall process is 175 kW. Calculate the mass flow rate of the air and the thermal efficiency of the heat engine.