Air enters the compressor of an ideal air standard Brayton cycle at 195 kPa, 290 K, with

Question:

Air enters the compressor of an ideal air standard Brayton cycle at 195 kPa, 290 K, with a volumetric flow rate of 6 m3/s. The compressor pressure ratio is 9. The turbine inlet temperature is 1400 K. The compressor has an efficiency of 90% and the turbine has an efficiency of 75%. Determine
(a) Net power output (W⋅net) and
(b) The thermal efficiency (ηth,Brayton),
(c) Back work ratio. Use the PG model for air.