a) A Pelton water wheel with a diameter of 1.2 m works under a head of 520 m and 340 rpm. Assuming the nozzle jet diamet

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A A Pelton Water Wheel With A Diameter Of 1 2 M Works Under A Head Of 520 M And 340 Rpm Assuming The Nozzle Jet Diamet 1 (119.63 KiB) Viewed 39 times

a) A Pelton water wheel with a diameter of 1.2 m works under a head of 520 m and 340 rpm. Assuming the nozzle jet diameter (d). deflection angle (B₂), and coefficient of velocity, C, to be equal to 10 mm, 155 and 0.97, respectively. Calculate; i) the power developed by the Pelton wheel, and ii) the overall efficiency of the turbine. b) The mean bucket speed of a Pelton turbine is 17 m/s. The rate of flow of water supplied by the jet under a head of 42 m is 1 m³/s. The jet is deflected by the buckets at an angle of 160° and assume that the coefficient of the velocity, C, 0.982. (Assume p 1000 kg/m³). Determine; i) the inlet and the outlet velocity triangle diagram, and ii) the power of the Pelton turbine in kW.