| 摘要 |
The water fall from a higher to a lower elevation is through an annular passageway having one or more turbines driven by the water as it flows through the column. The water flow is preferably a siphon action entry to the annular column being by way of an inverted U-tube with the inlet thereto immersed below the water level. The column is designed with offset portions whereby a plurality of turbines can be located downstream from one another in the column and laterally offset so that the turbines rotate about axes spaced apart horizontally from one another, each turbine or series of turbines driving an electric generator. The annular column is provided by two concentric shells or conduits spaced apart from one another, the flow of water being in the space between the shells.
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