5 6 [15] QUESTION The nozzle of a 4-jet Pelton wheel turbine each have a diameter of 130 mm and the velocity of each wat
Posted: Tue Jun 07, 2022 1:59 pm
QUESTION The nozzle of a 4-jet Pelton wheel turbine each have a diameter of 130 mm and the velocity of each water jet is 96,5 m/s. The available head at the nozzle is 520 m. The blade velocity is 46% of the jet velocity and has a turbine hydraulic efficiency of 85% (i.e. nozzles included). The friction across the buckets is 7% from entry to exit. Calculate: 6.1 The flow rate through the turbine. (2) 6.2 The nozzle velocity coefficient. ( 6.3 The bucket outlet angle. 6.4 The hydraulic power generated by the turbine. 6.5 The hydraulic efficiency of the wheel (i.e. nozzles excluded) (5) (3) (3)
5 6 [15]