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The Pelton wheel or Pelton Turbine is an impulse-type water turbine invented by American inventor Lester Allan Pelton in the 1870s. [ 1 ] [ 2 ] The Pelton wheel extracts energy from the impulse of moving water, as opposed to water's dead weight like the traditional overshot water wheel .
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.
Surprisingly, the turbine now moved faster. That was Pelton's great discovery. In other turbines the jet hit the middle of the cup and the splash of the impacting water wasted energy." [6] Experimenting and modelling, Pelton improved upon the efficiency of the Knight wheel (developed earlier by the Knight Foundry at nearby Sutter Creek).
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 ...
Francis turbine, a type of widely used water turbine. Kaplan turbine, a variation of the Francis Turbine. Turgo turbine, a modified form of the Pelton wheel. Tyson turbine, a conical water turbine with helical blades emerging partway down from the apex gradually increasing in radial dimension and decreasing in pitch as they spiral towards the ...
Turbines: Mutt: 4.4 MW Pelton turbine Limmern: 4 x 250 MW variable-speed Francis pump-turbines Tierfehd: 3 x 87 MW Pelton turbines; 2 x 20 MW Pelton turbines; 1 x 140 MW Francis pump-turbine Linthal: 2 x 17.2 MW Pelton turbines: Installed capacity: Mutt: 4.4 MW Limmern: 1,000 MW Tierfehd: 441 MW Linthal: 34.4 MW: Annual generation: Mutt: 7 ...
Rainpower AS is a Norwegian company which develops, designs, manufactures and sells equipment for hydropower electricity generation. The company provides Pelton, Francis, and Kaplan turbines, as well as pump turbines, small hydropower plants, turbine governor, oil pressure systems, valve controllers, exciters, valves, gates, pipes, and other products and services related to the hydropower ...
The peak efficiency of a cross-flow turbine is somewhat less than a Kaplan, Francis or Pelton turbine. However, the cross-flow turbine has a flat efficiency curve under varying load. With a split runner and turbine chamber, the turbine maintains its efficiency while the flow and load vary from 1/6 to the maximum.