Provided are a floating structure fluid dynamic force use system and a wind-propelled vessel which uses the system whereby it is possible to compensate for overturning moment due to fluid dynamic force and to alleviate both tilting and size increases of a floating structure. A floating structure fluid dynamic force use system (1) comprises an assembly (12) which extracts energy from wind or water, and a floating structure (13) which supports the assembly (12). The assembly (12) comprises a wind receiving part (10) which receives fluid dynamic force, and a support column (11) which supports the wind receiving part (10). The assembly (12) is positioned with the center of gravity (15) thereof below the water line and is supported to be capable of tilting in an arbitrary direction upon the floating structure (13).

A device for generating electricity in an irrigation system includes a water turbine, a generator, and a bypass valve. The water turbine converts the flow of water in the irrigation system into rotational energy. The generator is connected to the water turbine for converting the rotational energy into electrical energy. The bypass valve assembly is in fluid communication with the water turbine and the irrigation system and is configured to regulate the flow of water through the water turbine and to direct excess water around the water turbine and back into the irrigation system. The device is configured to generate electricity while maintaining a predetermined flow rate in the irrigation system and to direct excess water around the water turbine and back into the irrigation system when the flow of water through the water turbine exceeds the predetermined flow rate.

A device for generating electricity in an irrigation system includes a water turbine, a generator, and a bypass valve. The water turbine converts the flow of water in the irrigation system into rotational energy. The generator is connected to the water turbine for converting the rotational energy into electrical energy. The bypass valve assembly is in fluid communication with the water turbine and the irrigation system and is configured to regulate the flow of water through the water turbine and to direct excess water around the water turbine and back into the irrigation system. The device is configured to generate electricity while maintaining a predetermined flow rate in the irrigation system and to direct excess water around the water turbine and back into the irrigation system when the flow of water through the water turbine exceeds the predetermined flow rate.

The system includes a support structure with upstream and downstream pulleys rotatably supported thereby and with cables following circuits around each of the upstream and downstream pulleys. Prime movers, such as in the form of sail members, are attached to the cable. These prime movers have surfaces which are more perpendicular to the flowing water when on a downstream leg of the cable circuit than when on an upstream leg thereof. The prime movers are configured to rotate as they pass about the downstream pulley and upstream pulley to optimize their orientation to minimize drag when following the upstream leg of the circuit and to maximize surface area against which the flowing water acts when following the downstream leg of the cable circuit. Power is outputted from the system through action of the cable upon a power output such as an electric generator coupled to one of the pulleys.

The system includes a support structure with upstream and downstream pulleys rotatably supported thereby and with cables following circuits around each of the upstream and downstream pulleys. Prime movers, such as in the form of sail members, are attached to the cable. These prime movers have surfaces which are more perpendicular to the flowing water when on a downstream leg of the cable circuit than when on an upstream leg thereof. The prime movers are configured to rotate as they pass about the downstream pulley and upstream pulley to optimize their orientation to minimize drag when following the upstream leg of the circuit and to maximize surface area against which the flowing water acts when following the downstream leg of the cable circuit. Power is outputted from the system through action of the cable upon a power output such as an electric generator coupled to one of the pulleys.

A turbine with rotary blades includes a stator, a rotor rotational about an axis of the turbine and rotational blades evenly spaced around a circumference of the rotor. The turbine includes a pressure chamber circumscribed by a slot and a sealing chamber between which an inlet channel for a medium supply leads into the pressure chamber. The slot, the sealing chamber and the blades are adapted to permanently seal both the slot and the sealing chamber with at least one blade. The rotation of the blades can be ensured by a toothed gear, wherein angular speed of the blades is an integer multiple of the angular speed of the rotor. The blades may have a front wall and a rear wall of approximately conical or cylindrical shape.

Device for generating energy using the current of a river (2) or similar, which device (1) includes a paddlewheel (11) and at least one generator set (14) of which the drive shaft (17a) is coupled to the shaft (11) of the paddlewheel (10), characterized in that the paddlewheel (10) is self-floating and that the device (1) is provided with an at least partly submerged housing (3) with an open bottom (4) that is located at a height (A) above the bed (5) of the river (2), wherein the paddlewheel (10) is bearing mounted and of which the internal space (8) is pressurized to regulate the height of the water level (12) in the housing (3).

Device for generating energy using the current of a river (2) or similar, which device (1) includes a paddlewheel (11) and at least one generator set (14) of which the drive shaft (17a) is coupled to the shaft (11) of the paddlewheel (10), characterized in that the paddlewheel (10) is self-floating and that the device (1) is provided with an at least partly submerged housing (3) with an open bottom (4) that is located at a height (A) above the bed (5) of the river (2), wherein the paddlewheel (10) is bearing mounted and of which the internal space (8) is pressurized to regulate the height of the water level (12) in the housing (3).

An automated power generation system utilizes at least two separate specially designed piston tanks containing water or other liquid that moves within each separate piston housings in a generally vertical manner either upward due to buoyant forces or downward due to gravitational force to continuously pressurize and displace water or other liquid which is directed in a cyclic manner by means of a penstock to and through common power generating means such as a Pelton Turbine or other hydro turbines to generate electrical power and to operate the same for uninterrupted power supply for 24-hours per day, 7-days a week and 365 days a year. This cycle of power generation continues (not in the concept of perpetual motion) and obeys the law of conservation of energy as energy is neither created nor destroyed within the system but converted from one form to the other as needed

A system for generating electricity using the earth's gravitational field for its motive force includes twin electricity generators. Each electricity generator includes a water tower that is vertically juxtaposed with a linear generator. A shuttle, when dropped from the top of a water tower accelerates for engagement with a linear generator at a constant engagement velocity. An electro-magnetic engagement between the shuttle and the linear generator provides the system's output. Its input is provided by a mechanical drive unit that reciprocatingly manipulates water levels in both of the water towers to drive the system.