Additional problems with applications of exergy related to cycles are found in Chapters 9 and 10.
Review Problems
The high-temperature heat source for a cyclic heat engine is a steady-flow 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 steady-flowheat 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.
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