Patent ID: 9000604
Filing Date: 2015-04-07
Classification: F03B,F05B,Y02E

Abstract:
1. A hydro turbine generator apparatus for generating electrical power from water flow, said apparatus comprising: a rotor comprising a hub and a plurality of blades extending radially outward from said hub; and a duct comprising an inlet end and an outlet end, an inner surface and an outer surface, and a central longitudinal axis, wherein said hub is disposed along said central longitudinal axis of said duct; wherein α comprises a first angle between said central longitudinal axis of said duct and a line tangential to said inner surface of said duct at said outlet end of said duct; β comprises a second angle between said central longitudinal axis of said duct and a line between a first point at the beginning of a flared section of said duct and a second point directly downstream of said first point and located on said inner surface of said duct at said outlet end of said duct; and wherein the ratio of α/β is between 1.5 and 2.5.