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A Bonneville Dam Kaplan turbine after 61 years of service. The Kaplan turbine is a propeller-type water turbine which has adjustable blades. It was developed in 1913 by Austrian professor Viktor Kaplan, [1] who combined automatically adjusted propeller blades with automatically adjusted wicket gates to achieve efficiency over a wide range of flow and water level.
A Kaplan turbine has fewer runner blades than a Francis turbine because a Kaplan turbine's blades are twisted and cover a larger circumference. Friction losses in a Kaplan turbine are less. The shaft of a Francis turbine is usually vertical (in many of the early machines it was horizontal), whereas in a Kaplan turbine it is always vertical. A ...
This turbine was used until 1955 and today is exhibited at the Technisches Museum Wien. After the success of the first Kaplan turbines they started being used worldwide and remain one of the most widely used kinds of water turbines. In 1926 and 1934 Kaplan received honorary doctorates. He died of a stroke in 1934 at Unterach am Attersee, Austria.
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 ...
This is a retouched picture, which means that it has been digitally altered from its original version.Modifications: Verzerrung korr., Crop, Hintergrund unscharf maskiert, Farbe und Kontrast optimiert.
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Planning for expansion of the generation capacity started in 1981. Construction started on April 12, 1982, and the five new turbine generator units came on-line between April 13, 1985 and April 12, 1986. Units 1 and 2 are Kaplan turbines which are connected to single-phase generators to feed Amtrak's 25 Hz traction power system.
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