An air-blower dual-energy-extraction wave and tidal power generation device includes an air blower mechanism, a first conduit, a second conduit, four check valves, a bracket, and a power generation mechanism, wherein waves and tides boost a push member of the air blower mechanism to drive a piston of the air blower mechanism to operate for drawing in gas or liquid, dual energies, by the first conduit and the second conduit to gain double efficiency, and the gas or liquid is stored in a gas accumulation, constant-pressure, and pressure-regulating barrel for subsequent release of the gas or liquid, in a stable and constant manner, to drive a vane wheel power generator to rotate for generation of electrical energy. Furthermore, the invention provides an air-blower dual-energy-extraction wave and tidal power generation system, which includes a plurality of air-blower dual-energy-extraction wave and tidal power generation device for generation of electrical energy.

A power generation system is provided. The power generation system includes a floating body, a transmission device, a transportation tank, an upper container, and a power generator unit. The transmission device is driven by a tidal force or a buoyant force through the floating body to lift up the transportation tank to a first position, which is near to the upper container, or to lower the transportation tank down to a second position, which is at a lower level than that of the electric motor to recycle the solid particles. The upper container for carrying a plurality of solid particles is disposed at a higher level than that of the power generator unit, and is used to store and release the solid particles to drive the power generator unit to generate electric power.

A system and method for moving water up a water column to achieve a sufficient pressure to overcome a reverse osmosis filter. The system includes a rigid outer column for receiving and holding water, with an inner, deformable hose located inside the rigid outer column. The hose has a one-way valve at a distal end of the hose to allow water to enter the hose and an outlet at the proximal end of the hose to allow water to exit the hose. A water-raising device to raise the water within the inner, deformable hose includes a roller to selectively clamp the hose, and a buoyancy support attached to the roller. The buoyancy support is selectively inflated and deflated to move the clamp (and water inside the deformable hose) within the rigid outer column.