The present invention relates to systems and methods for pumping or removing a fluid from a region within or on top of or in contact with a water or liquid body and applications for said systems and methods. Some embodiments may also relate to anti-fouling or reducing fouling structures like docks.

The present invention relates to systems and methods for pumping or removing a fluid from a region within or on top of or in contact with a water or liquid body and applications for said systems and methods. Some embodiments may also relate to anti-fouling or reducing fouling structures like docks.

The present invention relates to systems and methods for pumping or removing a fluid from a region within or on top of or in contact with a water or liquid body and applications for said systems and methods. Some embodiments may also relate to anti-fouling or reducing fouling structures like docks.

The present invention relates to a system and device (1000) for controlling hydroelastic surface waves and to the use thereof. In particular, the invention relates to a system for controlling hydroelastic waves propagating over the surface of a liquid (1), the controlling system comprising a floating composite structure (10) having at least two zones Z1 and Z2 the respective bending coefficients D1 and D2 and/or the shapes of which are adapted to control the propagation of the hydroelastic waves, and for which it is possible to define an index n.sub.i, i being equal to 1 or 2, similar to the refractive index of an optical medium. The controlling system thus allows the propagation of the hydroelastic waves to be able to be controlled by applying the laws of geometric optics.

The present invention relates to a system and device (1000) for controlling hydroelastic surface waves and to the use thereof. In particular, the invention relates to a system for controlling hydroelastic waves propagating over the surface of a liquid (1), the controlling system comprising a floating composite structure (10) having at least two zones Z1 and Z2 the respective bending coefficients D1 and D2 and/or the shapes of which are adapted to control the propagation of the hydroelastic waves, and for which it is possible to define an index n.sub.i, i being equal to 1 or 2, similar to the refractive index of an optical medium. The controlling system thus allows the propagation of the hydroelastic waves to be able to be controlled by applying the laws of geometric optics.

This invention relates to an arrangement in a wave energy recovery apparatus and to a method for operating the wave energy recovery apparatus. The apparatus comprises at least a base (1), on which a reciprocating panel (2) is installed, a pivot shaft (7) for the reciprocating panel (2), a control system, and one or more power-take-off (PTO) units (3) to convert kinetic energy of waves or tidal currents to another type of energy. The arrangement comprises adjustment means (5, 5, 5) to set the top of the panel (2) in its vertical position to approximately correspond to the altitude of the surface (8) of the water.

This invention relates to an arrangement in a wave energy recovery apparatus and to a method for operating the wave energy recovery apparatus. The apparatus comprises at least a base (1), on which a reciprocating panel (2) is installed, a pivot shaft (7) for the reciprocating panel (2), a control system, and one or more power-take-off (PTO) units (3) to convert kinetic energy of waves or tidal currents to another type of energy. The arrangement comprises adjustment means (5, 5, 5) to set the top of the panel (2) in its vertical position to approximately correspond to the altitude of the surface (8) of the water.

An apparatus and method is disclosed for extracting energy from an oscillating working fluid, such as ocean waves. The apparatus (10) comprises an internal flow passage (40) for the working fluid, a turbine (44) and a flow control device (38), each of the turbine (44) and the flow control device (38) being in direct fluid communication with the flow passage (40), wherein in use the flow control device (38) is selectively moveable between a first configuration in which the flow control device (38) is open to allow a flow of the working fluid, such as air, to exit the flow passage (40) therethrough, and a second configuration in which the flow control device (38) restricts a flow of the working fluid therethrough. In such an instance, the working fluid then must enter the flow passage (40) via the turbine (44), which can be harnessed to generate electricity.

An apparatus and method is disclosed for extracting energy from an oscillating working fluid, such as ocean waves. The apparatus (10) comprises an internal flow passage (40) for the working fluid, a turbine (44) and a flow control device (38), each of the turbine (44) and the flow control device (38) being in direct fluid communication with the flow passage (40), wherein in use the flow control device (38) is selectively moveable between a first configuration in which the flow control device (38) is open to allow a flow of the working fluid, such as air, to exit the flow passage (40) therethrough, and a second configuration in which the flow control device (38) restricts a flow of the working fluid therethrough. In such an instance, the working fluid then must enter the flow passage (40) via the turbine (44), which can be harnessed to generate electricity.

The present invention relates to systems and methods for pumping or removing a fluid from a region within or on top of or in contact with a water or liquid body and applications for said systems and methods. Some embodiments may be applicable to, for example, inhibiting or preventing growth formation or fouling of structures in liquid environments. Other embodiments may be applicable to, for example, an energy storage device or a tidal power energy generation system.