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  3. number 3 please...

Question: number 3 please...

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Number 3 please


Steam is supplied to a two-stage turbine at 40 bar and 350°C. It expands in the first turbine until it is just dry saturated, then it is re-heated to 350°C and expanded through the second-stage turbine. The condenser pressure is 0.035 bar. Calculate the work output and the heat supplied per kilogram of steam for the plant, assuming ideal processes and neglecting the feed-pump term. Calculate also the specific steam consumption and the cycle efficiency. 3 4 If the expansion processes in the turbines of Problem 3 have isentropic efficiencies of 84% and 78% respectively, in the first and second stages, calculate the work output and the heat supplied per kilogram of stcam, the cycle efficiency, and the specific steam consumption. Compare the efficiencies and specific steam consumptions obtained from Problems. 1, 2, 3, and 4. Compare also the wetness of the steam leaving the turbines in each case. Specific steam consumption (ssc) ssc = [kg/kWh] Deadline: 01/31/2019
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