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Steam leaves the boiler of a 100 MW Rankine cycle power plant at 400°C and 3.5MPa....

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Mechanical Engineering

Steam leaves the boiler of a 100 MW Rankine cycle power plant at400°C and 3.5MPa. The Turbine has an isentropic efficiency of 85%and exhausts at 15 kPa. In the condenser, the water is subcooled to38°C by lake water at 13°C. The pump isentropic efficiency is 75%Draw and label the T-s diagram (4 points) for this cycle anddetermine: 1. The cycle’s thermal efficiency (7 points) 2. The massflow rate of the steam in the boiler (kg/h) (7 points) 3. Theback-work ratio (5 points) 4. The minimum required cooling waterflow rate if regulations limit the cooling water temperature riseto 10°C (kg/h) (7 points)

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