Q8. The layout of a gas turbine plant is illustrated in Fig. Q3. The plant operates between pressures of 1.00 bar and 23.00 bar. The HP turbine drives the compressor, and the LP turbine drives the load. Air enters the compressor at temperature of 300 K. Combustion gases enter the HP turbine at 1530 K. The isentropic efficiency of the compressor is 0.80, and that of each turbine is 0.90. For the compression process, γ = 1.4 and Cp = 1.005 kJ/kg K. For the remaining processes, γ = 1.33 and Cp = 1.150 kJ/kg K. The mass flow rate of exhaust gas is 110 kg/s, and the calorific value of the Fuel is 40 MJ/kg.
(a) Sketch the cycle on a T-s diagram.
(b) Calculate EACH of the following:
(i) The temperature and pressure at HP turbine exhaust
(ii) The power output
(iii) The specific fuel consumption in kg/kWh.
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