4 The steam cycle of a combined cycle power plant (shown in Figure Q4 below) is to be designed based on a gas turbine un

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4 The Steam Cycle Of A Combined Cycle Power Plant Shown In Figure Q4 Below Is To Be Designed Based On A Gas Turbine Un 1 (239.26 KiB) Viewed 35 times

4 The steam cycle of a combined cycle power plant (shown in Figure Q4 below) is to be designed based on a gas turbine unit whose gas flow rate is 60 kg/s and exhaust gas temperature is 600K. Assume pinch temperature is 25K. Steam at 15bar in HRSG is superheated to 300K and expanded through steam turbine to a condenser pressure of 0.03bar. The isentropic efficiency of the steam turbine is estimated to be 80%. Assume feed pump efficiency of 75% for steam cycle. The properties of saturated water and superheated steam are provided in Tables Q4(a) and Q4(b) respectively below. Calculate: (i) The boiler steam generation rate. (ii) The steam turbine power output. (iii) The condition team xhausted fron (iv) The efficiency of the steam cycle. (8) (6) (3) (8) steam turbine. Exhaust to Stack Steam Turbine Waste heat boiler Economiser 16 Evaporator لام لما ما Feed water Superheater 7 탈 8 Condenser D. Feed pump Gas Turbine Figure Q4