Consider a Brayton cycle with a pressure ratio of 12, that receives 5.5 lbm/s of air at 65 $^\circ$F. Assume that the maximum allowable temperature in the machinery is 2400 $^\circ$F. Using the air standard assumptions, if the isentropic efficiency of the compressor and turbine is 96 % and 94 % respectively, then:

(a) what is the net power output of this system? $\displaystyle \frac{\text{MMBTU}}{\text{hr}}$(check internet for this unit)

(b) what is the thermal efficiency of this system? %