A kind of an energy-saving and endurable auto electric water pump, including fixed support, electrical connector, rear cover of motor, controller assembly, motor assembly, isolation sleeve, impeller assembly and pump head housing, and the said fixed support and said electrical connector are set on the outer end surface of the rear cover of the motor, the controller assembly is mounted on the inner end face of the rear cover of the motor, and rear cover of the motor is mounted together with the motor assembly, the said impeller assembly is installed together with the isolation sleeve through rotating axis, while the water-cooling mechanism is set on the controller assembly. In the present invention, the water cooling mechanism is set on the controller of the electric water pump, which can effectively reduce the temperature of the controller and improve the service life of the pump.

Disclosed is a micro wind cell and a micro wind cell array for generation of power. The micro wind cell for generating wind power may comprise a rotor, an upper support and a lower support, a spacer rod, one or more bearings, a generator mount, a power generator and a rotor pin. The rotor further comprises a plurality of rotor blades and a through hole formed at the center of the rotor. The through hole is configured to receive a rotor pin. Further, the rotor blades are configured perpendicular to the direction of wind and the rotor rotates for generation of power. The micro wind cell array comprises one or more micro wind cells for generating power utilizing flow of wind from multiple directions along a wall, and a battery pack for storing the generated power. The micro wind cell array in isosceles quadrilateral shape may enable stacking of arrays.

A liquid pump includes a housing, a motor fixed in the housing, and an impeller driven by the motor. The motor includes a stator and a rotor rotatable relative to the stator. The impeller is connected to a rotor of the motor. The housing includes a guide wall surrounding the stator, and a guide face extending outwardly from an outer surface of the guide wall to guide a liquid flowing to the guide wall to flow in a direction away from the stator, thus ensuring the electrical safety of the liquid pump.

A hanging windmill has a wind turbine and a generator mounted on an airframe supported by a hanger at the center of gravity of the assembly. A stop is provided for preventing the tipping of the airframe on the hanger beyond a point where the blades of the wind turbine strike the hanger.

A wind turbine system is disclosed. The wind turbine system includes a flow consolidating conduit and an air driven rotor assembly. The air driven rotor assembly includes a rotor housing, a rotor within the rotor housing, and an annular pre-rotor flow recirculation passage defined between the rotor housing and the rotor. The rotor has a plurality of air driven blades distributed around a rotor rotation axis. The rotor has a radially inward entry direction. The recirculation passage surrounds the rotor. The recirculation passage extends from a recirculation passage upstream end to a recirculation passage downstream end. The recirculation passage downstream end is open ended and provides fluid continuity from the recirculation passage downstream end to the recirculation passage upstream end. The recirculation passage has a passage cross-sectional area that decreases gradually from the recirculation passage upstream end to the recirculation passage downstream end.

A runner for a hydraulic turbine configured to reduce fish mortality. The runner includes a hub and a plurality of blades extending from the hub. Each blade includes a root connected to the hub and a tip opposite the root. Each blade further includes a leading edge opposite a trailing edge, and a ratio of a thickness of the leading edge to a diameter of the runner can range from about 0.06 to about 0.35. Further, each blade has a leading edge that is curved relative to a radial axis of the runner.

A runner for a hydraulic turbine configured to reduce fish mortality. The runner includes a hub and a plurality of blades extending from the hub. Each blade includes a root connected to the hub and a tip opposite the root. Each blade further includes a leading edge opposite a trailing edge, and a ratio of a thickness of the leading edge to a diameter of the runner can range from about 0.06 to about 0.35. Further, each blade has a leading edge that is curved relative to a radial axis of the runner.