In a hydroelectric power plant, water at 20°C is supplied to the turbine at a rate of 0.55 m3/s through a 200-m-long, 0.

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In A Hydroelectric Power Plant Water At 20 C Is Supplied To The Turbine At A Rate Of 0 55 M3 S Through A 200 M Long 0 1 (233.66 KiB) Viewed 14 times

In a hydroelectric power plant, water at 20°C is supplied to the turbine at a rate of 0.55 m3/s through a 200-m-long, 0.35-m-diameter cast iron pipe. The elevation difference between the free surface of the reservoir and the turbine discharge is 140 m, and the combined turbine-generator efficiency is 80 percent. Disregarding the minor losses because of the large length-to-diameter ratio, determine the electric power output of this plant. The density and dynamic viscosity of water at 20°C are p= 998 kg/m3 and u = 1.002 10–3 kg/m-s. The roughness of the cast iron pipes is ε = 0.00026 m. Х The electric power output of this plant is kW.