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Mfg. Co. PHILADELPHIA Channel, where similar tidal conditions exist, are regions in which mariners proIceed with caution. It is only natural that men should have tried for years to make use of this tidal energy. We find in Brooklyn an old flood - mill which was installed as early as 1736. With the development of water turbines a new im petus in this direction was given, and a trial plant was installed on the German shore of the North Sea, in the be enough power may be obtained from the comparatively low fall to operate the plant efficiently. This fact has been the main drawback and has necessitated the presence of certain favorable conditions in order that the plan be practicable. RAISING A VESSEL AT NEWFOUNDLAND BY THE AID Of the Tides ginning of the eighties of the last century. Such plants are simple in principle. A reservoir is so arranged that the flow of the tide will fill it. The ebb serves to empty the reservoir and operate the turbines, generating electricity or driving other machinery. In putting the plant on an economical basis it is necessary to construct a large basin in order that Such conditions exist at Husum, where a small island close to the mainland. is connected with it by a dam. By the construction of two additional dams two basins have been made possible: one for high, It is planned in order to the other for low water. to build a third dam have a reserve basin available for emergency cases and for purposes of regulation. The power house will be situated on the dam between the high and low water reservoirs and will house six pairs of turbines, each pair driving one direct current generator. Running twenty-four hours daily, the turbines will develop six thousand horsepower. The reserve basin makes con tinuous service possible. |