APPENDIX G – Pumps and Turbines
Surge Analysis and the Wave Plan Method
Supplementary Material: Example Problems and Solutions
Appendix G – Problem 39
G.39 Compute the brake power and hydraulic torque associated with a Francis turbine when the flowrate through the turbine is 1.5 m3/s and the pressure head across the turbine is 75m while spinning at a constant 1350 rpm. Assume an efficiency of 82% for this turbine. What is the electrical torque on the generator shaft? If the rated speed of the turbine is 1350 rpm, determine the h/(a2+v2) and w/(a2+v2) values from Figure G.22. Use the appropriate sign convention for the turbine flowrate and speed as described section G.5.2.
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