Gas turbine exhaust of Ex. 5.1 is employed in a waste heat recovery boiler to raise steam at p = 66 bar and t = 540°C. The steam expands to a condenser pressure of 0.1 bar and dryness fraction 0.90....

Gas turbine exhaust of Ex. 5.1 is employed in a waste heat recovery boiler to raise steam at p = 66 bar and t = 540°C. The steam expands to a condenser pressure of 0.1 bar and dryness fraction 0.90. Taking a pinch-point of 20°C determine.

(a) The steam boiler capacity,

(b) Temperature of the gases in the stack,

(c) Steam turbine efficiency,

(d) Steam turbine plant output and efficiency, and

(e) Efficiency of the combined cycle plant.