Air enters the compressor of a gas turbine at 100 kPa, 300K, and a volumetric flow rate of 5 m3 /s. The air is compressed in two stages to 1500 kPa, with intercooling to 300 K between the stages at a pressure of 400 kPa. The turbine inlet temperature is 1400 K and the expansion occurs in two stages, with reheat to 1300 K between the stages at a pressure of 400 kPa. The compressor and turbine stage efficiencies are both 90%. Determine: