Repeat Prob. 9-86 using exergy analysis.
Prob. 9-86:
Consider a simple Brayton cycle using air as the working fluid; has a pressure ratio of 12; has a maximum cycle temperature of 6008C; and operates the compressor inlet at 100 kPa and 158C. Which will have the greatest impact on the back-work ratio: a compressor isentropic efficiency of 80 percent or a turbine isentropic efficiency of 80 percent? Use constant specific heats at room temperature.