| 摘要 |
<p>A flowing-water driveable turbine assembly 4 for location in river or sea areas comprises a turbine support 6 with positive buoyancy in water. The support includes fixed buoyant material (112, figure 11) arranged to form a cradle for a ballast tank (114, figure 11). The turbine support 6 has an anchoring system 8 which may comprise four or more tethers. The buoyancy device may be shaped so that hydrodynamic drag associated with downwards movement is greater than the drag associated with upwards movement. The positive buoyancy of the turbine assembly holds the turbine support 6 and the turbine 10 to a position of floating equilibrium against a downward force of the anchoring system 8. There may be a duct around each turbine for directing water through the turbine to generate power from water flow, and a winch for submerging the turbine assembly or parts thereof.</p> |
