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Selection of Turbine Diameter and Speed for Francis, Kaplan, and Pelton Hydraulic Turbines

by C. S. Kojo Kpordze, Univ of Idaho, Kimberly, ID, USA,
C. C. Warnick, Univ of Idaho, Kimberly, ID, USA,



Document Type: Proceeding Paper

Part of: Water Power '87

Abstract:

This paper is a continuation of work presented at WATERPOWER '83 and presents up-to-date information on the selection of diameter and speed for Francis, Kaplan, and Pelton type hydraulic turbines. A new methodology developed by Kpordze (1983) (1986) was used in defining the selection process for these conventional turbines. Data for the period 1965 to 1984 on rated head, rated discharge, rated power, runner speed, and turbine diameter from manufactured units were used to develop the procedure. Regression analysis was used to develop empirical equations and experience curves that permit the selection of turbine diameter and turbine speed when rate head, rated discharge, and rated power output are known. These latter three parameters are normally known early in the planning process. The procedure presented uses a simple ratio of rated power over rated head to arrive at an estimate of diameter and the speed is determined from an empirical relation between turbine speed and the square root of rated head divided by diameter.

Subject Headings: Turbines | Regression analysis | Head (fluid mechanics) | Hydro power | Hydraulic design | Data analysis | Hydrologic data

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