Other Gas Power System Applications A combined gas turbine?vapor power plant operates as shown in Fig. P9.95. Pressure and temperature data are given at principal states, and the net power developed by the gas turbine is 147 MW. Using air-standard analysis for the gas turbine, determine.

(a) the net power, in MW, developed by the power plant.

(b) the overall thermal efficiency of the plant. Stray heat transfer and kinetic and potential energy effects can be ignored.

T, = 690 K P, = 13.6 bar 2+ Air inlet Exhaust < Compressor T, = 400 K P5 = 1 bar P% = P Fig. P9.95 np Combustor LT, = 300 K -1 P = 1 bar Gas turbine in Heat exchanger Steam cycle Pump = 80% T, = 1580 K -3_pz = 13 bar Turbine -4_T, = 900 K P4 = 1 bar T, = 520C P = 100 bar Turbine 83 Condenser |n = 85% Pg = Ps = 0.08 bar W. gas 147 MW W vap - Qout