It is desired to construct a hydraulic turbine for a hydraulic power plant to operate under the following conditions: di

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It Is Desired To Construct A Hydraulic Turbine For A Hydraulic Power Plant To Operate Under The Following Conditions Di 1 (133.75 KiB) Viewed 16 times

It is desired to construct a hydraulic turbine for a hydraulic power plant to operate under the following conditions: discharge Q = 3.5 m3/s of water, the available net head = 290 meters, the hydraulic efficiency = 0.8, the rotating speed = 300 rpm. A Pelton wheel impulse turbine was selected with the following specifications: the bucket angle b2 = 160°, the coefficient of velocity for the nozzle is 0.98 and assume the friction coefficient k = 0.2. Determine the following: A) The brake horsepower. B) The Pelton wheel diameter in meters. O 1.01 3,790 O 3.52 6,406 2.08 10,827 1.60 4,928 O 2.70 8,328 C) The required number of Jets. 1 2 3 5 E) The computed head coefficient. 0.049 0.340 0.088 0.158 0.024 D) Jet Diameter to Wheel diameter ratio, dj/Dw. 0.158 0.049 0.024 0.340 0.088 F) The Specific Speed in M.K.S., Ns. 0.158 0.088 0.340 0.024 0.049 pa