Consider a Brayton cycle with a pressure ratio of 13, that receives 6.5 lbm/s of air at 75 ∘F. Assume that the maximum allowable temperature in the machinery is 2500 ∘F. If the isentropic efficiency of the compressor and turbine is 93 % and 92 % respectively, then what is the thermal efficiency of this system? heat capacity of air: c_p = 0.240 btu/(R*lbm) k of air is 1.4

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