Question

Incorrect answer. Your answer is incorrect. Try again.

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 1900°R. Calculate the thermal efficiency

and the net power developed, in horsepower, if

(a) the turbine and compressor isentropic efficiencies are each 100%.

Entry field with incorrect answer

47.56

%

Entry field with incorrect answer

5468.73

hp

(b) the turbine and compressor isentropic efficiencies are 88 and 84%, respectively.

Entry field with incorrect answer

84

%

Entry field with incorrect answer

hp

(c) the turbine and compressor isentropic efficiencies are 88 and 84%, respectively, and a regenerator with an effectiveness of 80% is incorporated.

Entry field with incorrect answer

%

Entry field with incorrect answer

hp

Answer 1