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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 .
At the rated power of 423 MW each turbine operates at a head of ~1869 meters (6130 feet) and a flow rate of 25 cubic meters per second, with an efficiency in excess of 92% (~92.23%). The turbine assembly is a five-jet configuration; the stream of each jet is 184.7 mm (7.2716535 inches) in diameter with an exit velocity of 191.5 meters/second ...
The power house originally had 11 Pelton turbines made by Escher Wyss (Zürich). Each turbine was coupled to two 1,000 kW DC generators made by Dick, Kerr & Co., which powered the smelting process. There were also two AC generators for auxiliary power. [6]
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).
Kaplan turbine and electrical generator cut-away view. The runner of the small water turbine. A water turbine is a rotary machine that converts kinetic energy and potential energy of water into mechanical work. Water turbines were developed in the 19th century and were widely used for industrial power prior to electrical grids. Now, they are ...
The turbines are a Pelton wheel system with two nozzles. The generators are designed for 10.5 kV. The generators are designed for 10.5 kV. The electricity generated is exported to an above-ground 10 kV system via tunnels and bare conductor rails.
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 ...
Pelton impulse turbine, circa 1880, built by the Miners Foundry of Nevada City. Exhibit in National Museum of American History, Washington, DC, USA. Date: 18 January 2011, 15:57:26: Source: Self-photographed: Author: Daderot: Permission (Reusing this file) Public domain.
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