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Francis inlet scroll at the Grand Coulee Dam Side-view cutaway of a vertical Francis turbine. Here water enters horizontally in a spiral-shaped pipe (spiral case) wrapped around the outside of the turbine's rotating runner and exits vertically down through the center of the turbine. The Francis turbine is a type of water turbine.
Turbines are sometimes differentiated on the basis of the type of inlet flow, whether the inlet velocity is in axial direction, radial direction or a combination of both. . The Francis turbine is a mixed hydraulic turbine (the inlet velocity has Radial and tangential components) while the Kaplan turbine is an axial hydraulic turbine (the inlet velocity has only axial velocity componen
The power station can be accessed either by an elevator or a tunnel. The plant has 16 Francis turbines, divided into two sets of eight each, and separated by a mounting area, workshops, control room, elevator shaft and ventilation system. The turbines were built by two partners of James Bay Energy (SEBJ).
The tangential water inflow of the mill race made the submerged horizontal wheel in the shaft turn like a true turbine. [1] A Francis turbine runner, rated at nearly one million hp (750 MW), being installed at the Grand Coulee Dam, United States. A propeller-type runner rated 28,000 hp (21 MW) The earliest known water turbines date to the Roman ...
Ortolano, Leonard; Cushing, Kao (2000), Grand Coulee Dam and the Columbia Basin Project USA (PDF), World Commission on Dams, Annexes, Cape Town, South Africa, OCLC 45147763, archived from the original (PDF) on June 13, 2010; Pitzer, Paul C. (1994), Grand Coulee: Harnessing a Dream, Pullman, WA: Washington State University, ISBN 0-87422-110-2
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