Water turbines with mixers and ejectors
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United States of America Patent
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Feb 19, 2013
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app pub date -
Apr 16, 2009
filing date -
Mar 23, 2007
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Abstract
Turbine systems for extracting energy from water traveling relative to the turbine system can include a rotor assembly for extracting the energy, a turbine shroud having a turbine shroud inner volume within which at least a portion of the rotor assembly is disposed, and an ejector shroud disposed adjacent to the turbine shroud. The turbine shroud and the ejector shroud can each have a terminus comprising a plurality of turbine shroud mixer elements or ejector shroud mixer elements, respectively. One or more of the mixer elements and ejector shrouds comprise a mixer/ejector pump which increases the energy extraction potential of the turbine system. One or more of the turbine shroud mixer elements, ejector shroud mixer elements, and ejector shroud and turbine shroud inlets can be asymmetric along a plane passing through the axis of rotation of the rotor assembly.
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