An industrial gas turbine plant comprises LP and HP compressors with intercooling, three combustion chambers, HP, IP and LP turbines and an exhaust gas heat exchanger. The HP turbine drives both compressors but the IP and LP turbines supply the power output. The pressure ratios of the IP and LP turbines are equal. From the data given below, calculate the power output, the fuel consumption rate and the plant efficiency.

Pressure at LP compressor inlet 1.035 bar. Pressure at LP turbine exhaust 1.035 bar. Temperature at all compressor inlets 15C Temperature at all turbine inlets 650C Pressure ratio for each compressor 3:1 Isentropic efficiency of compressors 0.85 Isentropic efficiency of turbines 0.80 Heat exchanger effectiveness 0.70 Calorific value of fuel 44.2 MJ/kg Mass flow rate of gas 45.4 kg/s