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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 mostly used for electric power generation.
The Francis turbine is a type of water turbine. It is an inward-flow reaction turbine that combines radial and axial flow concepts. Francis turbines are the most common water turbine in use today, and can achieve over 95% efficiency. [1] The process of arriving at the modern Francis runner design took from 1848 to approximately 1920. [1]
Pelton's paddle geometry was designed so that when the rim ran at half the speed of the water jet, the water left the wheel with very little speed; thus his design extracted almost all of the water's impulse energy—which made for a very efficient turbine.
A : Generator; B : Turbine; 1 : Stator, 2 : Rotor, 3 : Wicket gate, 4 : Turbine blade, 5 : Water flow, 6 : Turbine generator shaft. Reason This is an image of a water turbine that caught my eye, and does a good job of explaining the parts in a water turbine that move to generate electrical force from flowing water.
The water spins a turbine, which is connected to the generator that produces electricity. [13] The other type is called a run-of-river plant. In this case, a barrage is built to control the flow of water, absent a reservoir. The run-of river power plant needs continuous water flow and therefore has less ability to provide power on demand.
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A fifth turbine-generator, horizontal Francis-type, originally rated at 5 MW, was added to Plant 1 in 1905. [12] In 1908 Seattle-Tacoma Power Company, a forerunner to Puget Sound Energy, purchased Seattle Electric Company. [10] A second penstock was added to Plant 2 in 1957. The penstock was supplied and installed by Chicago Bridge & Iron Co.
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