Index Method for Pumping Operation of Reversible Pump-Turbine

[+] Author and Article Information
M. Yamabe, Y. Yamaguchi

Hitachi Research Laboratory, Hitachi, Ltd., Hitachi Japan

J. Basic Eng 91(1), 103-107 (Mar 01, 1969) (5 pages) doi:10.1115/1.3571010 History: Received June 27, 1968; Online November 03, 2011


The adaptability of the Winter-Kennedy index method [1] was examined, and consequently “Draft Tube Index Method” for Francis and diagonal flow pump-turbines under pumping operation were newly investigated experimentally. It is clarified that the Winter-Kennedy method is applicable to Francis pump-turbines, but not suitable to apply on diagonal flow pump-turbines with adjustable guidevanes, and that the draft tube index method, depending upon differential pressure between two pressure taps provided on the draft tube or on the air-pipe, indicates sufficient accuracy to apply on Francis and diagonal flow pump-turbines.

Copyright © 1969 by ASME
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