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 waterwheel assembly for a river or similar body of flowing water includes a waterwheel mounted on a support structure, and one or more buoyant members, wherein waterwheel can move up and down, and the buyout members support part of the weight of the waterwheel so that the waterwheel is able to rise and fall with any change to the river level, and the support structure is secured on land by the river or body of water by means of one or more cantilevered beams. The waterwheel has an axle secured between two vertical posts by means of salable bearings that permit the waterwheel to move up and down.

Underwater vehicles capable of self-propulsion are described. An underwater vehicle includes a cross-flow turbine including two or more foils spaced apart from a main shaft. The foils have a pitch that is adjustable under control of a pitch control mechanism. The underwater vehicle also includes a frame supporting the main shaft. The frame enables rotation of the cross-flow turbine. The underwater vehicle additionally includes a generator-motor set including rotor and stator elements. The rotor element is in rotary communication with the main shaft.

A water current energy generator comprises a barrel configured to rotate in a water current and a pair of air compressors secured on either side of the barrel. As the barrel spins, the air compressors are actuated and compress air into a cylinder. The compressed air is then capable of being accessed by means of a pneumatic hose.

A vertical twin rotor water turbine apparatus and method for extracting energy from a flow of water is described herein. The described apparatus delivers favourable performance by virtue the operation of a novel configuration of a plurality of central cores with at least one blade member extending from each core and flow directors to increase the effectiveness and efficiency of said device.

A hydropower system has a channel and at least one water turbine. The channel has a flowing path, two side walls, and at least one turbine recess recessed in at least one of the side walls and having an opening communicating with the flowing path. The at least one water turbine is mounted in the at least one turbine recess and has a shaft, a blade wheel, and a generator. The blade wheel is mounted on and rotatable with the shaft and partially protrudes into the flowing path. The generator is connected to the shaft. The blade wheel may be propelled to rotate by flowing water flowing through the flowing path to drive the generator to generate power.

In a rotating machine having a fluidic rotor, the rotor comprises at least one blade mounted on an arm rotating about a rotor shaft forming a main axis of the rotor, the rotor being kept by a supporting structure in an orientation such that said axis is substantially perpendicular to the direction of flow of the fluid, the blade being mounted so as to pivot about an axis of rotation of the blade parallel to the main axis. The machine comprises means for generating a relative oscillation movement of the blade with respect to the arm at the axis of rotation of the blade, in order in this way to vary the inclination of the blade during the rotation of the rotor. Said means comprise, at the arm end, a mechanism comprising a first rotating element (A; B) known as the drive element and a second rotating element (B; A) known as the driven element, the elements being mounted on mutually parallel axes of rotation and separated by an inter-axis distance, the orientation of the drive element being controlled depending on the orientation of the rotor shaft while the orientation of the driven element determines the orientation of the blade, one of the rotating elements comprising a finger (D) spaced apart from its axis of rotation and the other rotating element comprising a groove (C) which receives the finger and in which the finger can slide. Application notably to wind turbines, to marine turbines and to nautical and aircraft propellers.

A hydro-kinetic power generation system is disclosed. The system includes a structure to be positioned in shallow or deep waterways, such as canals and rivers. The structure may be modular, such that the structure may be composed of one or more structural units that are each substantially the same. In various embodiments, each unit includes one or more curved walls for accelerating water through the unit, or through the structure as a whole. In one embodiment, the accelerator walls are curved for optimizing water flow through the structure without generating undue head loss. In certain embodiments, the units may be configured such that the accelerator walls are positioned on opposite sides of the structure, or the accelerator walls may be adjacently positioned. Coupled to the structure are turbines and gear box systems for harnessing energy from the moving water and converting the energy into electric power.

A hydropower system has a channel and at least one water turbine. The channel has a flowing path, two side walls, and at least one turbine recess recessed in at least one of the side walls and having an opening communicating with the flowing path. The at least one water turbine is mounted in the at least one turbine recess and has a shaft, a blade wheel, and a generator. The blade wheel is mounted on and rotatable with the shaft and partially protrudes into the flowing path. The generator is connected to the shaft. The blade wheel may be propelled to rotate by flowing water flowing through the flowing path to drive the generator to generate power.

A driving fan device has a transmission device and multiple blade assemblies. The transmission device has a transmission seat disposed at a center of the transmission device. The blade assemblies are mounted on the transmission seat. Each one of the blade assemblies has a fixing portion and a tilting portion. The fixing portion is mounted radially on the transmission seat and has a pivotal end and a groove. The pivotal end is disposed away from the transmission seat. The groove is caved inwardly near the pivotal end and has an inner surface. The tilting portion is pivotally connected to the fixing portion and has a rotating part and a forced part. The rotating part is disposed at the tilting portion, is pivotally connected to the pivotal end of the fixing portion, and has an abutting surface corresponding to the inner surface. The forced part is connected to the rotating part.