1. À Pelton wheel performance data are collected in the following table. Turbine speed (RPM) 3000 Shaft torque (Nem) 2.4 Water supply line Water flow pressure (bar) rate (L/min) 18.4 If water supply pipe diameter is 25 mm and turbine wheel diameter is 70 mm, calculate the hydraulic head in m, jet velocity in m/s, speed ratio, hydraulic power in W, mechanical power in W and efficiency of the turbine. What is the optimum speed (RPM) of the wheel (for maximum power)?

1. À Pelton wheel performance data are collected in the following table. Turbine speed (RPM) 3000 Shaft torque (Nem) 2.4 Water supply line Water flow pressure (bar) rate (L/min) 18.4 If water supply pipe diameter is 25 mm and turbine wheel diameter is 70 mm, calculate the hydraulic head in m, jet velocity in m/s, speed ratio, hydraulic power in W, mechanical power in W and efficiency of the turbine. What is the optimum speed (RPM) of the wheel (for maximum power)?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A pump is tested in the laboratory and the following data were obtained: = 5 ft-lbf Torque Rotational speed Inlet pressure Outlet pressure Velocity in the inlet line Height to inlet gage T 1200 rpm 10 psia = 28 psia = 8 ft/s 2 ft 5 ft P1 P2 V = Z1 Height to outlet gage = z2 Inlet flow line = 2-nominal schedule 40 Outlet flow line = 2-nominal schedule 40 Fluid = water a) Determine the pump efficiency. b) Consult an actual pump catalog and select a pump for these conditions.
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