A system for water desalination and power generation. The system includes a power generation section and a desalination section. The power generation section includes a first tank, a second tank, and a first channel. The desalination section includes a third tank, a fourth tank, and a second channel The system utilizes waste energy in power plants to desalinate water and generate power. The disclosed system is able to improve the performance of power plants, by utilizing the wasted power of the exit steam, to desalinate seawater and even generate electricity. The disclosed system alleviates requirements for cooling towers and introduces thermal exchange tanks, radiators, and sprinkles instead of cooling towers.

A fluid power-extraction machine is immersed in an ambient flow of a fluid, captures (and extracts energy from) a portion of the fluid, and discharges it back into the ambient flow. The machine includes a housing bounding a fluid intake inlet and including an ambient flow deflector, a downstream body arranged rearwardly from the deflector and forming a discharge outlet between the deflector and the downstream body, and a power extraction device in a fluid flow channel communicating from the fluid intake inlet to the discharge outlet. The deflector outwardly deflects and accelerates a portion of the ambient flow adjacent to the discharge outlet. A mixing surface of the downstream body extends outwardly and rearwardly from the discharge outlet, mixing the accelerated flow, the discharged flow and the ambient flow together along the mixing surface. A backflow preventer of the downstream body prevents wake backflow from impeding discharge of spent flow at the discharge outlet.

A convex type guide plate waterwheel energy increasing device with gradually dense holes is provided. The convex type guide plate waterwheel energy increasing device comprises fixed devices, a main diversion plate and auxiliary diversion plates, wherein an upwards convex arc structure is arranged on the top surface of the main diversion plate, gradually dense first through holes are formed in the main diversion plate from the middle to the two ends, the diameters of the first through holes are gradually increased, the auxiliary diversion plates are connected to the two sides of the main diversion plate, second through holes are formed in the auxiliary diversion plates, fixed devices are fixed to the two sides of the auxiliary diversion plates, and the fixed devices are used for fixing the main diversion plate and the auxiliary diversion plates to the riverbed. Through the convex type main diversion plate with the gradual dense holes with different heights, the device adapts to the condition that the distance between the waterwheel and the bottom of the riverbed is different along with the change of the phase angle, kinetic energy of low-velocity air at the bottom of the riverbed is conveyed to the impeller area of the waterwheel, the effective acceleration area in the river channel is large, the average velocity of water flow in the impeller area of the waterwheel is increased, and the output power of the unit is improved.

The present invention provides an adaptive hydroelectric turbine system comprising a base for a hydroelectric turbine or other electrical component, the base having four ground contacting feet, at least one of which is displaceable relative to the remaining of the base such as to ensure that all four feet can contact the seabed to provide improved stability and load bearing capabilities.

The present invention provides an adaptive hydroelectric turbine system comprising a base for a hydroelectric turbine or other electrical component, the base having four ground contacting feet, at least one of which is displaceable relative to the remaining of the base such as to ensure that all four feet can contact the seabed to provide improved stability and load bearing capabilities.

A buoyant energy generating housing apparatus submersed in fluid currents. The disclosed embodiments comprises rotary turbines that harvest the kinetic energy in the currents, and buoys that house equipment and provide buoyancy to support the system. Movements and rotations are restrained by multiple cables or tendons that are anchored on the seabed, in combination with the internal active ballast system in the buoys. Applications in currents with direction change are possible with the use of two-buoy embodiments, further assisted by the optional use of weathervanes.

A device for use in extracting energy from an incoming fluid flow is presented. The device comprises: an oscillator assembly mounted on a base, the oscillator assembly comprising: a main body for exposing to an incoming fluid flow; and a joining element attached to the main body and configured for anchoring the main body to the base and enabling oscillation of the main body with respect to the base; an operative flow affecting unit comprising at least one flow interacting element located in at least one location respectively on a surface of the main body, the operative flow affecting unit being configured and controllably operable for affecting a separation of streams of the fluid flowing over the surface of the main body; a control unit in communication with the operative flow affecting unit, the control unit being configured and operable for activating and deactivating of each of the at least one flow interacting element of the operative flow affecting unit according to a certain time pattern, the time pattern being selected such that interaction between the flow interacting element and fluid streams creates vortices in the fluid streams at a selected vortex formation frequency causing an increase in oscillation of the main body, thereby enabling conversion of motion from the oscillation into useful energy.

A device for use in extracting energy from an incoming fluid flow is presented. The device comprises: an oscillator assembly mounted on a base, the oscillator assembly comprising: a main body for exposing to an incoming fluid flow; and a joining element attached to the main body and configured for anchoring the main body to the base and enabling oscillation of the main body with respect to the base; an operative flow affecting unit comprising at least one flow interacting element located in at least one location respectively on a surface of the main body, the operative flow affecting unit being configured and controllably operable for affecting a separation of streams of the fluid flowing over the surface of the main body; a control unit in communication with the operative flow affecting unit, the control unit being configured and operable for activating and deactivating of each of the at least one flow interacting element of the operative flow affecting unit according to a certain time pattern, the time pattern being selected such that interaction between the flow interacting element and fluid streams creates vortices in the fluid streams at a selected vortex formation frequency causing an increase in oscillation of the main body, thereby enabling conversion of motion from the oscillation into useful energy.

A buoyant hydrodynamic pump is disclosed that can float on a surface of a body of water over which waves tend to pass. The pump incorporates an open-bottomed tube with a constriction. The tube partially encloses a substantial volume of water with which the tube's constriction interacts, creating and/or amplifying oscillations therein in response to wave action. Wave-driven oscillations result in periodic upward ejections of portions of the water inside the tube that can be collected in a reservoir that is at least partially positioned above the mean water level of the body of water, or pressurized by compressed air or gas, or both. Water within such a reservoir may return to the body of water via a turbine, thereby generating electrical power (making the device a wave engine), or else the device's pumping action can be used for other purposes such as water circulation, propulsion, or cloud seeding.

A buoyant hydrodynamic pump is disclosed that can float on a surface of a body of water over which waves tend to pass. The pump incorporates an open-bottomed tube with a constriction. The tube partially encloses a substantial volume of water with which the tube's constriction interacts, creating and/or amplifying oscillations therein in response to wave action. Wave-driven oscillations result in periodic upward ejections of portions of the water inside the tube that can be collected in a reservoir that is at least partially positioned above the mean water level of the body of water, or pressurized by compressed air or gas, or both. Water within such a reservoir may return to the body of water via a turbine, thereby generating electrical power (making the device a wave engine), or else the device's pumping action can be used for other purposes such as water circulation, propulsion, or cloud seeding.