07478974 is referenced by 12 patents and cites 46 patents.

Normally hydroelectric dam powerhouses use river flow once before discharging it as turbulent tailwater, ineffective to spin turbines. The present invention uses tapered channels to confine and constrict turbulent tailwater into laminar flow that drives turbines both submersible and floatable utilizing the same water three times concurrently to generate new electricity. Channels originate adjacent to draft tube outlets, constrict in the downstream direction to create narrow necks where turbine/generators benefit from debris free, increased velocity and laminar flows to generate electricity. Hydroelectricity uses zero fuel, creates zero waste and has zero carbon dioxide emissions. Structures are uncomplicated, construction is within project boundaries minimizing environmental impacts and speeding projects coming online. New facilities are protected by existing dam security. Hydroelectricity replaces less dependable renewable energy systems.

Apparatus for hydroelectric power production expansion
Application Number
Publication Number
7478974 (B1)
Application Date
April 17, 2008
Publication Date
January 20, 2009
William Lowell Kelly
Walla Walla, 99362
Diller Ramik & Wight
E02B 9/00
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