Air enters the compressor of an air-standard Brayton cycle with a volumetric flow rate of 60 m3/s at 0.8 bar, 280 K. The compressor pressure ratio is 20 and the maximum cycle temperature is 2100 K. For the compressor, the isentropic efficiency is 89% and for the turbine the isentropic efficiency is 92%. Determine (a) the net power developed, in MW; (b) the rate of heat addition in the combustor, in MW; (c) the thermal efficiency of the cycle.