Tidal energy power generator - has submerged turbines set horizontally or obliquely within venturi at inlet of diffuser

摘要

The energy converter comprises a submerged tide or current driven turbine either attached to sea bed etc. or moored at a suitable depth. The turbine (9) is set within a Venturi the outlet of which may be angled away from the sea bed to avoid disturbing or cutting away the surface. The turbine may be one of a pair of more and may be driven from either side. The Venturi can be in a variety of forms with horizontal or vertical outlets and the turbine set horizontally or obliquely. Turbulence and cavitation can be minimised by the inclusion of tapered channels (17) above and/or below the inlet side of the Venturi leading past the turbine housing and exiting into the post turbine flow. The anti-turbulence channels preferably form an annulus or part annulus about the main channel.