| 摘要 |
A hydro-electric generator arrangement for underwater placement comprises a housing 210, a waterwheel 7 and an electrical generator (not shown), the housing being dome-shaped and containing a volume of trapped gas, which in use, displaces the water in the housing to a level below the axis A of the waterwheel. The trapped gas may be pressurized and pumped from the atmosphere. The submerged arrangement may be placed on the bed of a river to harness tidal currents, and preferably can be rotated for optimum through-flow. The waterwheel may comprise a first set of paddles 30 of a first diameter attached to the hub, and a second set 31 of concentric nested paddles of a second diameter attached to the hub (see fig.6). An independent claim relates to locating the waterwheel within a sub-surface tidal / river / sea current. |
