A pumping device has a container, an inlet pipe, a float barrel, and a discharging pipe. The container has a box containing water and a first gas, and a pressure gauge and a check valve mounted to the box. The inlet pipe connects to a water supply and has a second section erectly disposed within the box and communicating with an inside of the box. The float barrel is disposed within the box, contains a second gas, and has an opening. The second section is mounted through the opening. The discharging pipe has two opposite ends respectively communicating with a water reservoir and the inside of the box. The first gas has a pressure larger than 1 atm. The second gas has a pressure less than 1 atm. Water enters the float barrel. A water level inside the float barrel is higher than a water level inside the box.

A method for obtaining fluid gravitational potential energy and buoyant potential energy by utilizing an internal space of a rotor on turbine engine is provided. The method includes allowing fluid to act on the outer space of the rotor to form a reciprocating power with the interior of the rotor through utilizing a spatial structure of the rotor. The method further includes the rotor on the turbine obtaining a rotational torque of the turbine engine in response to fluid transient action at the desired location.

A method for obtaining fluid gravitational potential energy and buoyant potential energy by utilizing an internal space of a rotor on turbine engine is provided. The method includes allowing fluid to act on the outer space of the rotor to form a reciprocating power with the interior of the rotor through utilizing a spatial structure of the rotor. The method further includes the rotor on the turbine obtaining a rotational torque of the turbine engine in response to fluid transient action at the desired location.

The invention relates to a hydraulic device that uses gravity and buoyancy forces, in which during a rotation of the assembly, movable masses (M1, . . . , Mn) are displaced by means of a force acting on the masses that counteracts the weight force in such a way that said masses contribute to the rotational movement.

The invention discloses a power generating device and an operation method thereof based on ocean temperature difference, which belong to the field of ocean energy utilization, and include a negative thermal expansion body, a rope and a generator. The negative thermal expansion body is connected to the rope, and the rope is connected to the generator simultaneously. The negative thermal expansion body is in a contracted state when in the hotter upper seawater close to the sea surface, and the difference obtained by deducting buoyancy from gravity is relatively large. The negative thermal expansion body is in an expanded state when in colder deep seawater, and the difference obtained by deducting buoyancy from gravity is relatively small. The unbalanced force on the rope will drive the rope to move, and the generator will be driven to generate power through the rope.

An energy conversion system comprising: a riser conduit comprising a first liquid; a down-comer comprising a second liquid, the down-comer in fluid communication with the riser conduit, the second liquid comprising first liquid and finely divided material in suspension such that the second liquid has a higher specific gravity than the first liquid, the down-comer in fluid communication with a first tank and a second tank; a converter device arranged to convert energy of the first liquid into energy for output from the energy conversion system, and to discharge the first liquid thereafter; and a recirculator arranged to recirculate third liquid to maintain the finely divided material in suspension, the third liquid comprising second liquid and further finely divided material in suspension. The recirculator is arranged to discharge the third liquid to mix with the first liquid from the converter device to form the second liquid. The first tank and the second tank are arranged between the converter device and the down-comer, to receive the first liquid discharged from the converter and to supply the first liquid to the down-comer. Supply of first liquid to the first and second tanks is in use regulated to maintain the height of liquid in the first and second tanks below a predetermined threshold.

(EN) This invention relates to method and apparatus for extracting energy from water waves to generate electric power. The wave energy converter uses sea wave oscillations, from a land-based position. It understood a land-based power take off apparatus (3) that is oscillated by waves conveyed to it by canal or tunnel. The canal has a funnel shaped intake (1) at the coastline, a wave control gate (9) positioned near the intake and a power take off apparatus (3) positioned inland across the canal with a float (8) that works pumping cylinders (7) that pump hydraulic fluid to turn an impulse turbine (5) coupled to an electricity generator to generate electricity. The canal depth is predetermined to float the float, of the power take off apparatus (3), at all tide levels.

The subject of the invention is an energy generating apparatus for utilizing the energy of a flow medium having a support structure (13), at least one waving element (1), at least two fastening elements (4), a drive and control unit (5), and an energy recovery and transfer unit (10), wherein the waving element (1) is connected to the fastening elements (4), the drive and control unit (5) is connected to the fastening elements (4). It is characterized in that it comprises at least one turbulizer element (2), the waving element (1) between two fastening elements (4) is described as a regular waveform, determined by a function, and comprises at most one full wave period. The subject of the invention also includes the method for application of the apparatus.

The subject of the invention is an energy generating apparatus for utilizing the energy of a flow medium having a support structure (13), at least one waving element (1), at least two fastening elements (4), a drive and control unit (5), and an energy recovery and transfer unit (10), wherein the waving element (1) is connected to the fastening elements (4), the drive and control unit (5) is connected to the fastening elements (4). It is characterized in that it comprises at least one turbulizer element (2), the waving element (1) between two fastening elements (4) is described as a regular waveform, determined by a function, and comprises at most one full wave period. The subject of the invention also includes the method for application of the apparatus.

Disclose herein is a hydropower system for deployment in a natural body of water that has a at least one first cylindrical tube member disposed through a concrete block assembly and coupled to a turbine tunnel assembly designed to receive water from a natural body of water via gravitational forces acting on the water. At least one water intake with a vortex breaker is operationally coupled to the cylindrical tube member. At least one turbine generator assembly has a plurality of upwardly angled but non-vertical blade members extending therefrom around a central axis adapted to rotate an electric generator. At least one second cylindrical tube member is coupled to at least one injection hole member to at least one or more of a fault line, an underground water system, and a river system that impart energy to move the water back into the natural water cycle.