Patent ID: 8115329
Filing Date: 2012-02-14
Classification: F01D,F03B,F05B,F05D,Y02E,Y02T

Abstract:
1. An electrical power generation apparatus, comprising at least one underwater turbine unit, the at least one underwater turbine unit comprising at least one turbine that rotates in one direction in response to fluid flow in one direction and in another or counter direction in response to fluid flow in another direction, the at least one turbine comprising at least one blade, the at least one blade comprising a plurality of longitudinally spaced aerofoils, wherein each aerofoil is symmetrical about a mid-chord line thereof and is symmetrical about a chord line thereof and comprises first and second leading edges, each leading edge being part circular in shape, and wherein the at least one blade tapers in a radially outward direction, and wherein the turbine unit further comprises a housing having a fluid flow channel therethrough, the at least one turbine being mounted in the flow channel for rotation in response to fluid flow through the flow channel, and the flow channel comprises a venturi.