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.

A particular arrangement of vortex generators for an airfoil is described. The vortex generators are provided in pairs, preferably on a wind turbine blade, wherein by arranging the vortex generators according to specified characteristics, a surprising improvement in blade performance is provided over the prior art systems.

An energy-harvesting building structure has multiple levels, a vertical shaft (central vortex tower] to direct wind upward toward an outlet at the top, and multiple wind powered turbines in the shaft. Wind collection areas on multiple levels are exposed to multiple directions. Wind vanes pivot into a backstopped position for redirecting wind to spiral inward toward the shaft. Wind twisters receive and further redirect wind inward and upward into the shaft to feed an air vortex driving the turbines at different levels. Two concentric stages of wind vanes may be included within wind collection areas, with the inner stage vanes having a surface which deforms in one direction but not the other. The building can include occupancy zones between wind collection levels. Heated air can be released into the bottom of the shaft to feed the vortex. At a top level, another wind turbine can draw wind up the shaft.

A gravitational vortex variable flow energy system (GVvFES) is disclosed. An example embodiment includes: a turbine basin having an inlet portion and an outlet portion, the turbine basin having a hybrid conical shape; a generator installed adjacent to the turbine basin; a turbine blade hub having turbine blades attached thereto, the turbine blade hub being coupled to the generator with a turbine blade axle, the turbine blade hub being configured to achieve a variable and configurable height relative to a top of the turbine basin; and a diffuser installed beneath the outlet portion of the turbine basin, the diffuser being configured to achieve a variable and configurable height relative to a bottom of the turbine basin. An example embodiment also includes linkage to vary an angle or pitch of the turbine blades.

An electrical energy generating device (1) to transform kinetic energy of fluid passing through a pipe into electrical energy, the device may include a flow management unit (2) having a first housing (20) enclosing a plurality of tubes and a first gasket (27); a generating unit (3) having a second housing (30) with a plurality of coils (37) embedded within the second housing (30), a rotor rotatable within the second housing (30); and a connector (4) connecting the flow management unit (2) to the generating unit (3).

A combined omnidirectional flow turbine system includes rotors that are disposed in a vertical position and enclosed in a motionless structure that receives air flows from any external direction which are manipulated by an airfoil to cause the rotors to rotate. The motionless structure is a hollow body and it is formed by a support structure and cover, being said interior space adapted to store electronic components, which can be directly supplied by the energy, produced. On its outer surface, air particles and pollutants filters can be installed, taking advantage of the aerodynamic shape of the motionless structure, which promotes air flow adhesion along its surface, making possible to capture particles along their preferred path.

A vortex windmill run by incoming air flow to power a generator by which mechanical energy is converted into electrical energy in order to charge a battery. The vortex windmill includes a plurality of elongated blades having bulbous-shaped edges that are spaced from and connected to a rotatable central shaft, and which are located and rotatable within a cylindrical outer cage, such that when the incoming air flow rotates the blades and central shaft a vortex is formed around the central shaft which aids in maintaining the rotational velocity and momentum of the blades and central shaft during operation and for a period of time after the volume of incoming air flow or the velocity of the incoming air flow decreases, thereby increasing the efficiency of the windmill and the amount of energy produced from the air flow received by the windmill.

An assembly for generating electricity from flowing water includes a chamber having a base, a side wall extending from the base, a water inlet, and a water outlet, a rotor unit having a shaft and a rotor mounted to the shaft located in and rotatable in the chamber in response to water flow through the chamber, and an electrical generator coupled to the rotor unit for generating electricity in response to rotation of the rotor. The dimensions of the inlet, the outlet and the chamber and the positions of the inlet, the outlet and the rotor are selected to promote the formation of a vortex within the chamber when in use the assembly is located in a body of water or beside a body of water, in a waterway or beside a waterway, within an enclosed water conduit or beside an enclosed water conduit, and there is a flow of water through the chamber from the inlet to the outlet.

A vortex generator apparatus including a fluid intake duct, a fluid tank including: a first fluid inlet port, a second fluid inlet port, and a fluid outlet port. A turbine is provided outside of the fluid tank in fluid communication with the fluid outlet port.

A vortex hydroturbine includes a tank to be filled with a liquid, such as water. At least one turbine is driven exclusively by flowing water to circulate the liquid within the tank and produce 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.