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
Posted: Fri Jul 08, 2022 6:28 am
- 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 (79.68 KiB) Viewed 33 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 Determine; 1000 kg/m³). i) the inlet and the outlet velocity triangle diagram, and ii) the power of the Pelton turbine in kW. -