The Gorlov helical turbine (GHT) is a water turbine evolved from the Darrieus turbine design by altering it to have helical blades/foils. Water turbines take kinetic energy and translate it into electricity. It was patented in a series of patents from September 19, 1995 to July 3, 2001 and won 2001 ASME Thomas A. Edison. GHT was invented by Alexander M. Gorlov, professor of Northeastern University.
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A water turbine is a rotary machine that converts kinetic energy and potential energy of water into mechanical work.
The runner of the small water turbine
The construction of a Ganz water Turbo Generator in Budapest in 1886
Roman turbine mill at Chemtou, Tunisia. The tangential water inflow of the mill race made the submerged horizontal wheel in the shaft turn like a true turbine.
A Francis turbine runner, rated at nearly one million hp (750 MW), being installed at the Grand Coulee Dam, United States.