A wave energy capture, storage, and conversion assembly, including a first screw pump assembly, including a screw including a first end and a second end, and a tube at least partially encircling the screw, the tube including a third end and a fourth end, and a first point absorber operatively arranged to displace the screw in a first circumferential direction.

A pump storage hydroelectricity storage and generation system configured to burn un-scrubbed gas and generate electricity with minimal elevation differential between upper and lower fluid storage reservoirs.

A screw system including a plurality of segmented blades. Each blade segment of the plurality of blade segments including a mounting portion and a vane portion. The mounting portion, having a helical length, for removably attaching the blade segment. The vane portion extending from the mounting portion along the helical length thereof. The vane portion having a front surface that is not parallel to a back surface from the mounting portion to a tip of the blade segment, along the helical length.

The device, comes to solve the problem of the Spanish rivers by the absence of migratory fish in dams, salmon, sea trout, shadles, sabogas, lampreys, eels, etc. The ascent of the fish is achieved by the mechanical actuation of an endless screw or Archimedes, located in an adapted channel, which, turning on its axis clockwise, allows water to be raised from the rivers including the existing fish in the bank. The descent of the fish is achieved by the passage of water with the fish through the screw. The passage induces an anti-clockwise rotation in the screw that is used to generate electricity. The sale of electricity allows investments to be financed for the environmental effect essential for compliance with current legislation and the provisions of the 2015-2021 Hydrological Plans, at no cost to the concessionaire of the exploitation nor the Spanish state.

A wave energy capture, storage, and conversion assembly, comprising at least one pump assembly, and a point absorber operatively arranged to displace the at least one pump assembly in a first circumferential direction.

A floating screw turbine device with adjustable rear deflectors/diffusors is disclosed. Three pontoons, spaced apart, carry water ducts in which screw turbines are mounted. Screw turbines, mounted in a V configuration, have mirror symmetrical pitches of the screws measured over the centre of symmetry that passes through the central pontoon. Such a configuration minimizes the vibration of the device. Rear deflectors/diffusors have an adjustable pitch relative to the floors of the water ducts by which they can affect the water flow velocity through the water ducts. In one embodiment, the optimum pitch is selected according to the previously performed computational fluid dynamics simulation for the device, where the pitch is changed using hydraulic or electromechanical actuators. In another variant an artificial neural network is taught to model a global function of the system dynamics in order to achieve optimal operation.

A wave energy capture, storage, and conversion assembly, comprising at least one pump assembly, and a point absorber operatively arranged to displace the at least one pump assembly in a first circumferential direction.

A hydrokinetic energy conversion system (1) comprising a turbine device (2) comprising a rotor (3) displaying a rotational axis (O), which turbine device is arranged to operate with the rotational axis in an inclined orientation vis--vis an incoming body of water (W), and which rotor comprises a blade (10) which is arranged to interact with the incoming body of water such that rotational energy is imparted to the rotor. The blade comprises a first, convex surface (12), a second, concave surface (13) and a free, distal edge (E) where the first surface and the second surface meet. The curvature of the second surface, when viewed in a plane orthogonal to the rotational axis, is such that a maximum depth (Dmax) of the second surface, when measured from a straight line intersecting the rotational axis and the distal edge, is at least 35% of the distance between the rotational axis and the distal edge.

A modular, electricity generating apparatus comprises an elongate, central member comprising a first end and a second end; at least one foil disposed about the central member in fluid interacting relation thereto; the solar foil comprising an outer surface having photovoltaic properties; the first end and the second end dimensioned and configured to be connected to a connecting node; and, the elongate central member at least partially formed of an electrically conductive material and configured to conduct electricity from at least one of the connecting nodes to the other of the connecting nodes.

A system for capturing the energy of fluid currents, using axial turbines with one free end and the other end fastened to a mechanical element or electric generator, characterized in that the turbines comprise coil springs, helically twisted plates or crossbeams, complete helical turbines with their shafts or just their blades, which capture the energy of wind or water, with their shaft or fastened end actuating an electric generator or mechanical system. In all cases the blades around the rotation axis of the turbines have an inclination such that they generate a torque in the same direction and the turbines are automatically oriented by the water or air currents, like weather vanes.