Academics – Applied Heat : 2014/OCT/02
Question
Q9. The layout of a gas turbine plant is shown in Fig Q2. The plant operates between pressures of 0.98 bar and 7.01 bar. All the work produced by the HP turbine drives the compressor.
The LP turbine drives the load. Air enters the compressor at 26°C and the combustion gas enters the HP turbine at 985°C.
The isentropic efficiency of the compressor is 0.84 and that of each turbine is 0.86.
(a) Sketch the cycle on a T-s diagram.
(b) Calculate EACH of the following:
(i) The temperature at the HP turbine exhaust
(ii) The pressure at the HP turbine exhaust
(iii) The network output per kg of air.
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