An innovative system for recovering energy from tidal currents is proposed. The system is composed of a blade immersed in sea water and connected to a vertical bar which, moving up and down under the action of the sea current, transfers energy to a double effect pump. The latter feeds a pressurized reservoir providing a water flow rate, at suitable pressure, to a hydraulic turbine. The basic configuration involves a four-bar linkage connecting the vertical bar and the piston pump. The system can be employed in all the sites whose seabed quickly deepens and whose tidal currents are parallel to the coast. In this paper, the authors provide a methodology for designing the system, once found the bathymetry of the chosen site and the field of variation of the tidal current velocities, taking into account the morphology of the costal boundary layer. A case study, developed for the Calabrian site of Punta Pezzo (Strait of Messina – Italy), demonstrated the technical feasibility.

提出了一种用于从潮流中回收能量的创新系统。该系统由浸没在海水中的叶片组成，并连接至垂直杆，该垂直杆在海流的作用下上下移动，将能量传递至双效泵。后者将加压的储水器喂入到水轮机中，从而在适当的压力下提供水流量。基本配置包括连接垂直杆和活塞泵的四杆连杆机构。该系统可用于海床迅速加深且潮流与海岸平行的所有地点。在本文中，作者在考虑到肋边界层的形态之后，一旦找到所选地点的测深图和潮流速度变化的领域，便提供了一种用于设计系统的方法。