A facility for generating electricity that includes a water source, at least one water inlet valve for delivering water to a pressure vessel under pressure, a plurality of pressure vessel water outlet valves in flow communication with the pressure vessel and a turbine-powered electrical generator for delivery of water under pressure from the pressure vessel water outlet valves according to a predetermined sequence, and an electrical distribution system for selectively delivering electricity generated by the electrical generator to an external source for use or to an air compressor operatively connected to the water source for pressurizing the water being delivered to the pressure vessel.

An air-driven generator for generating electric power from movement of a working fluid. Upper ends of buoyancy conduits are in fluidic communication with an upper end of a gravitational distribution conduit, and a lower end of the gravitational distribution conduit is in fluidic communication with lower ends of the buoyancy conduits. An air injection system injects air into the buoyancy conduits. A closed fluid loop is formed with working fluid flowing from the gravitational distribution conduit driving a fluid turbine system that is interposed between the lower ends of the gravitational distribution conduit and the buoyancy conduits. Flow of working fluid can be induced by an injection of air into working fluid disposed in the buoyancy conduits to achieve a generation of power by actuation of the fluid turbine system. An upper chamber can remove entrained air. A Rankin Cycle Generator can receive and be actuated by exhausted air.

Provided is a vertical axis turbine with which blade lift is further increased, the use efficiency of the wind energy and the like is further improved, and initial motion is easy and reliable. One aspect of the present invention includes: a plurality of blades 20 that are connected to a rotation axis 11, have a blade span in the direction of the rotation axis 11 and a chord length in the rotation direction of the rotation axis 11, and are formed such that the distance thereof from the rotation axis 11 changes in a logarithmic spiral form from a blade tip 91 toward a blade root 92; small, so-called vortex generators 50 disposed on the blade surfaces; and so-called winglets 60 provided at the blade tips. Arms 30B connecting the blades 20 and the rotation axis 11 are also in a spiral or logarithmic spiral form and are formed in an airfoil shape so as to provide a sub-blade effect.

A method to dispose at least one air guiding tube between a penstock and a water turbine installed on a dam to form negative pressure at an outlet of the air guiding device by the water kinetic energy produced from high speed of water flow to take in external air for pressurizing, so as to produce a plurality of pressured air bubbles mixed into the water. The water with pressured air bubbles would be decompressed when flowing to an exit of the penstock and has their volumes increased, so as to enhance the water kinetic energy for driving the water turbine more efficiently; meanwhile the method can prevent from production of cavities and further avoid damages of the components of the water turbine from cavitation.

A system that produces electricity offshore through a fixed installation, including a minimum of; one turbine, one generator, one compressor set, one high voltage subsea cable, and one control center; the generator is a gas driven generator that produces enough power to operate the electric motors, an onshore control center that operate and monitor the system, and all electricity generated through the water turbines and generators are transported to the onshore electricity grid through a high voltage subsea cable

A facility for generating electricity, including a water source and a plurality of penstocks adapted for selective flow communication with the water source for delivering water from the water source to a turbine electricity generator. An electricity distribution system is provided having a first component adapted to deliver electricity generated by the turbine electricity generator to an electric grid and an alternative second component adapted to use the electricity to power an air compressor. A compressed air storage reservoir is provided for storing air compressed by the air compressor, including an outlet for selectively delivering the compressed air to the plurality of penstocks according to a predetermined sequence for providing energy to the water contained in the penstock to propel the water from the penstock to the turbine.

A facility for generating electricity, including a water source and a plurality of penstocks adapted for selective flow communication with the water source for delivering water from the water source to a turbine electricity generator. An electricity distribution system is provided having a first component adapted to deliver electricity generated by the turbine electricity generator to an electric grid and an alternative second component adapted to use the electricity to power an air compressor. A compressed air storage reservoir is provided for storing air compressed by the air compressor, including an outlet for selectively delivering the compressed air to the plurality of penstocks according to a predetermined sequence for providing energy to the water contained in the penstock to propel the water from the penstock to the turbine.

An energy conversion and storage system, comprises a piston defining an enclosed volume. The piston has an inlet valve proximate a bottom of the piston and an outlet valve proximate a top of the piston. A guide having a vertical displacement is arranged so that the piston travels along the guide. The guide has a compressed gas outlet proximate a bottom of the guide and is arranged to move gas into the piston when the piston contacts the compressed gas outlet. The guide has a release valve operator disposed proximate a top of the guide and is arranged to open the outlet valve when the piston contacts the release valve operator. A source of compressed gas in communication with the compressed gas outlet. The system has means for converting motion of the piston along the guide into either (i) motion of another object or (ii) electric power.

An energy conversion device includes a container body configured to hold a liquid; a housing affixed above the container body by a handler connected to a surface of the container body, wherein a primary roller is configured to rotate at a first end of the housing and a free roller is configured to rotate at a second end of the housing; a piston attached at a first end to an outer perimeter of the primary roller; an inflatable balloon attached to a second end of the piston within the container body, wherein vertical movement of the piston causes the primary roller to rotate; an air chamber configured to supply air to a lower opening in the inflatable balloon via a balloon valve; and an interconnect located on a side of the free roller configured for connection to one of an energy-driven device or a turbine generator.

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.