A wind harvesting assembly for a wind turbine, having: a Venturi tube having a hollow interior having a first air pressure; an open top end having a first diameter; an open bottom end having the first diameter; a tube length spanning between the open top end and the open bottom end; and a constricted section located above the bottom end, the constricted section adapted to increase a velocity of air passing through by having a second diameter smaller than the first diameter; a plurality of vertical wind turbine blades arranged around the Venturi tube, wherein each vertical blade of the plurality of vertical wind turbine blades is associated with permanent magnets.

The present invention discloses a wind power generation tower. The wind power generation tower, according to one embodiment of the present invention, can implement wind power generation by accelerating wind speed even for low speed wind and simultaneously increasing the utilization efficiency of the wind which rotates blades, thereby improving overall power generation efficiency. In addition, the wind power generation tower, according to the one embodiment of the present invention, can increase the intensity of the wind by a Venturi effect and simultaneously increase the drop in pressure of the wind escaping the wind power generation tower by using the vortex generated at the rear surface of the wind power generation tower in a cylindrical shape, thereby improving the rotation of the blades provided to the inside of the wind power generation tower so as to enable faster rotation of the blades.

A high performance hybrid turbine is provided which has an impeller towards which a fluid flow of water, air, or other fluid is conveyed for rotation of the impeller around an axis of rotation. The impeller exploits the thrusts that the fluid flow exerts on the elements constituting the impeller and the thrusts generated by a certain number of airfoils provided inside the elements of the impeller. The high performance hybrid turbine, if used as a wind turbine, can operate at much higher wind speeds than conventional wind turbines.

Disclosed is an air-compression energy-storage and power-supply system having air purification capability through using solar energy. The system includes: a solar energy power supply device, it utilizes solar energy to produce power for the system itself, and for users to use in daytime; an air purification device, with its exhaust fan connected to a transformer power distribution device to obtain the power for rotation, so that outside air flows into the air cylinder after filtering by the air filter, then the purified air is exited from the air cylinder to provide purified air; an air-compression energy-storage and power-supply device, used to compress the purified air into high pressure for storage, and the high pressure purified air is released at night, for the generator to produce power for user to use at night; and a wind power transmission device, disposed above the air purification device.

In general terms the present invention proposes a device 100 for harvesting renewable energy. The device 100 comprises a wind turbine 140, a channel 160 for directing wind 198 to the wind turbine 140, and a solar receiver 155 positioned on an internal of the channel 160 for receiving sunlight 194 entering the channel 160.

A vortex hydroturbine includes a tank to be filled with a liquid, such as water. At least one turbine circulates the liquid within the tank and produces a vortex. A central turbine is driven by the circulating liquid and an electric generator is driven by the central turbine for producing electricity to be supplied to a load. A method for operating a vortex hydroturbine is also provided.

A renewable-energy power plant including a first structure, a second structure, a first flue, a second flue and a turbine arrangement comprising at least one turbine, wherein the first structure includes a primary fluid inlet and the second structure includes a secondary fluid inlet and a primary fluid outlet, wherein the secondary fluid inlet is connected to the first flue, wherein the primary fluid inlet is located lower than the secondary fluid inlet and the primary fluid outlet is located lower than the secondary fluid inlet, wherein the turbine arrangement is provided inside the second flue, wherein the power plant includes wetting means arranged to discharge an additive fluid to the working fluid passing through the secondary fluid inlet, wherein the turbine arrangement is arranged to generate power due to the working fluid flowing in a downwards direction inside the second flue and passing through the turbine arrangement.

The invention relates to a ducted wind turbine having a turbine rotor assembly which extracts kinetic energy from air flowing there past. The rotor assembly includes a plurality of rotor blades having rotor tips at their outermost ends which define a rotor tip sweep circumference. A duct assembly at least partially surrounds said rotor tip sweep circumference and a base platform supports the ducted wind turbine. The duct assembly is mounted on the base platform by way of a weathervane bearing arrangement such that the duct assembly may weathervane around the turbine rotor assembly in response to changes in wind direction. A semi-submersible support platform, wave energy capture apparatus, torsional bearing mechanism and a latticework wind turbine tower associated with the ducted wind turbine are also provided.

An apparatus, system and method to capture water power from head or pressure is provided utilizing pipes, inlets and outlets. The apparatus comprises a central bore having an internal diameter suitable for a fluid flow, the fluid flow moves inside the central bore through the apparatus, and at least one outlet, the fluid flow exits the apparatus through the at least one outlet, optionally, a plurality of inlets for flowing additional fluid to the central bore mix the fluid flow with the additional fluid from the plurality of inlets. The apparatus can further mix the fluid though additional mixing devices and additional devices can be used to recapture energy such as, hydroelectric power from the fluid flow. A system and method to capture water energy from fluid flow is provided.

A method and apparatus for generating electricity using a tidal stream impeller generator. The generator is a closed container, housing generators and related equipment in a non-flammable environment. The generator housing has affixed to it impeller blades, oriented to maximize the force captured from the movement of seawater with tides at depth. Tidal flow in seawater causes the housing and impeller blades rotate about a conduit, with the conduit serving as an axle as well as a conduit for cables, pipes, and related structures to enter the housing without breaching the watertight housing. The conduit passes through end caps on the housing, through watertight bearings. The rotation of the impeller provides the rotational energy for generators.