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An air-standard Brayton cycle has a compressor pressure ratio of 10. Air enters the compressor at...

An air-standard Brayton cycle has a compressor pressure ratio of 10. Air enters the compressor at p1 = 14.7 lbf/in.2, T1 = 70°F, with a mass flow rate of 90,000 lb/h. The turbine inlet temperature is 1800°R. Calculate the thermal efficiency and the net power developed, in horsepower, if (a) the turbine and compressor isentropic efficiencies are each 100%. % hp (b) the turbine and compressor isentropic efficiencies are 88 and 84%, respectively. % hp (c) the turbine and compressor isentropic efficiencies are 88 and 84%, respectively, and a regenerator with an effectiveness of 80% is incorporated. % hp

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