A runner for a hydraulic turbine configured to reduce fish mortality. The runner includes a hub and a plurality of blades extending from the hub. Each blade includes a root connected to the hub and a tip opposite the root. Each blade further includes a leading edge opposite a trailing edge, and a ratio of a thickness of the leading edge to a diameter of the runner can range from about 0.06 to about 0.35. Further, each blade has a leading edge that is curved relative to a radial axis of the runner.

A runner for a hydraulic turbine configured to reduce fish mortality. The runner includes a hub and a plurality of blades extending from the hub. Each blade includes a root connected to the hub and a tip opposite the root. Each blade further includes a leading edge opposite a trailing edge, and a ratio of a thickness of the leading edge to a diameter of the runner can range from about 0.06 to about 0.35. Further, each blade has a leading edge that is curved relative to a radial axis of the runner.

A rotor including soft rotor structures fixed to the rotor shaft, which rotor structures are of a soft material such as canvas or the like. The rotor structure is a loop arranged to form an asymmetrical cone when an air or water current flows through the loop.

The present invention relates to technologies or applications for the mitigation or adaptation to climate change, specifically to the generation of energy through renewable energy sources. In particular, the present invention provides a system for the continuous generation of renewable energy by harnessing ocean waves characterized in that it comprises: a first floating element positioned on the waves and operatively connected to a vertical assembly; a swing arm positioned on a fixed base and operatively connected at one end to said vertical assembly, and at the opposite end to a pair of pneumatic cylinders, wherein the movement of said swing arm alternately actuates each of the pneumatic cylinders comprising said pair of pneumatic cylinders; an air storage tank operatively connected to said pair of pneumatic cylinders; a turbine which is fed from said air storage tank, and which is operatively connected through its shaft to an electrical generator; an electrical substation operatively connected to said electrical generator, wherein said electrical substation is configured to store, manage and distribute the energy produced in said electrical generator; and a control system operatively connected to: said pair of pneumatic cylinders, said air storage tank, said turbine, said electrical generator, and said electrical substation; wherein said control system is configured to monitor and control each of the aforementioned.

A gate mechanism (20) is adapted for mounting within the extension (4) of a trawl net (1), the gate mechanism comprising a turbine (47/147/247) for powering rotation of the gate mechanism as it is dragged through the water within the trawl net.

A rotary device that converts a linear fluid movement to a rotational fluid movement to generate power includes a front sail and a plurality of sail pairs situated around a shaft. In some embodiments, each of the sail pairs includes oppositely disposed sails in the same longitudinal plane. In some embodiments, the front sail and/or each sail of the sail pairs can include a flap and/or an airfoil.

A method for obtaining fluid gravitational potential energy and buoyant potential energy by utilizing an internal space of a rotor on turbine engine is provided. The method includes allowing fluid to act on the outer space of the rotor to form a reciprocating power with the interior of the rotor through utilizing a spatial structure of the rotor. The method further includes the rotor on the turbine obtaining a rotational torque of the turbine engine in response to fluid transient action at the desired location.

A method for obtaining fluid gravitational potential energy and buoyant potential energy by utilizing an internal space of a rotor on turbine engine is provided. The method includes allowing fluid to act on the outer space of the rotor to form a reciprocating power with the interior of the rotor through utilizing a spatial structure of the rotor. The method further includes the rotor on the turbine obtaining a rotational torque of the turbine engine in response to fluid transient action at the desired location.

This invention regards a hydraulic turbine (1) to operate in pressure circuits, where there is a flow of a fluid, to control the flow and pressure downstream the installation point. Even so, said turbine (1) can generate power for itself based on the difference of pressure and flow, as the remaining power can be used in public power networks or isolated. Its application field comprises sanitation companies, beverage industries, paper and cellulose industries, petrochemical companies or any places, where it is needed to control the flow and pressure in supply networks.

According to the embodiment, in a range from a plane P1 including a runner rotation center axis C and an end point 15E2 of an outlet end 15 of the vane 13, up to a plane P2 corresponding to a position where the plane P1 is moved by an angle, which is determined by dividing 360° by a value that is four times the number of vanes 13, in a runner rotation direction, when respective sections of the vane 13 are taken at a plane including the axis C and radially extending, in at least one section, a tangent T1 on a centerline Cv of the vane 13 passing through an intersection X at which the centerline Cv and a flowing water surface 12f intersect, and a tangent T2 on the flowing water surface 12f passing through the intersection X, define an acute angle on a negative pressure surface.