A turbomachine includes a housing and a rotating group that is supported for rotation about an axis within the housing. The rotating group includes a rotor shaft, a wheel, and a fastener that clamps the wheel to the rotor shaft. The fastener is unitary and includes a head and a shank. The shank includes a piloting feature on an arcuate surface that faces radially outward with respect to the axis. The shank is received in the wheel and is attached to the rotor shaft with the piloting feature being piloted to an arcuate inner radial surface of the wheel. The head abuts an axial surface of the wheel for axially clamping the wheel to the rotor shaft.

An apparatus (1) for generating power is provided. The apparatus comprises: at least one pocket (2a-h) for collecting inlet gas which rises through a liquid in which the at least one pocket may be located; an output rotor (4); and a greenhouse gas scavenger (6) for removing greenhouse gas from an inlet gas; the apparatus being configured so that collection of inlet gas causes movement of the pocket, the pocket being coupled to the output rotor so that movement of the pocket causes rotation of the output rotor. A method is also provided.

A vacuum pump generally comprises a low pressure portion and a high pressure portion separated by a gas impermeable partition. Gas molecules exit the low pressure portion through an opening in the partition and passively impinge on a featureless rotatable surface in the high pressure portion. A drive rotates the rotatable surface with tangential velocity in the supersonic range at multiple times the most probable velocity of the impinging gas molecules. Impinging gas molecules are ejected outwardly from the periphery of the rotatable surface generating a substantial net outward flow of gas and reducing the pressure in the low pressure portion. The vacuum pump is effective to reduce the pressure in the low pressure portion to a target minimum pressure without using seals to prevent gas molecules from leaking back to the low pressure portion and without using blades or vanes to actively impact the gas molecules.

A light-emitting assembly with a micro hydraulic power generator includes a power generation module and a light-emitting module. The power generation module includes a housing, a coil module and an impeller. An accommodating space inside the housing is divided by a transverse baffle therein into two cavities, respectively a coil cavity and an impeller cavity. A side wall of the impeller cavity is provided with at least one water inlet. At least one internally recessed portion is provided at a connection portion between the transverse baffle and an outer wall of the coil cavity, and the transverse baffle defines a water outlet at a portion positionally corresponding to the internally recessed portion. The coil module is arranged in the coil cavity in a sealed manner by a colloidal material. The impeller is placed in the impeller cavity, the impeller can be rotated by an external force.

Described herein is essentially a high-efficiency, hybrid fluid-aeolipile. In operation, this hybrid device is placed in the stream of a moving fluid, preferably air. Energy is extracted from the fluid stream by directing a portion of the stream through and, optionally, around the device. As the fluid-flow moves through the device, it is directed into nozzles. These nozzles, which are free to pivot in a cyclical manner, employ the established phenomenon of “nozzle-effect” to accelerate the velocity of the air-flow passing through them, which is ultimately ejected from each nozzle tip, producing thrust. This thrust, amplified by nozzle-effect, drives the nozzles to pivot around a shared axis. The wind energy, thereby converted into cyclical motion, that may be used to perform useful work, is converted with greater efficiency, than is possible in conventional blade-type wind turbines.

In accordance with one aspect of the present disclose, a fluid compressor for compressing a fluid is disclosed. The fluid compressor has a frame and a piston assembly. The piston assembly has a compression chamber connected to the frame, and the compression chamber includes a movable piston inside of the compression chamber along with a connection rod of a smaller transverse dimension than the diameter of the piston connected to the piston at a first end of the connection rod. The fluid compressor further has a pivot point located on the frame, and a lever connected to the pivot point. The lever has a short end and a long end on opposite sides of the pivot point, and the short end is connected to a second end of the connection rod. Further included is a lifting device for raising and lowering the lever.

A convector for cooling a microprocessor includes a volute-shaped housing, a stator, and a rotor, and can be mounted to a CPU board of a computing device for thermal coupling with the microprocessor. The volute-shaped housing of the convector encapsulates the stator and the rotor, and has a radially outer casing which defines a single exit port for guiding a fluid out of the housing. The stator has a plurality of plates configured to conduct heat. The rotor has a plurality of disks and a shaft extending longitudinally along the housing. Together, the housing, the stator, and the rotor define a spiral flow path through the volute-shaped housing, in both radially outward and longitudinal directions, to the single exit port. A motor may be provided to impart rotational motion to the rotor.

A fluid pump for conveying a fluid may include an internal rotor rotatable about an axis of rotation relative to an external stator and an impeller connected to the internal rotor in a rotationally fixed manner configured to convey a fluid. The internal rotor may include a rotor receiving sleeve having a base body. The base body may include a receiving chamber configured to receive an anchor unit. The internal rotor may further include a bearing bushing penetrating the rotor receiving sleeve coaxially to the axis of rotation. The bearing bushing may be configured to receive a rotor shaft. The impeller may be directly connected to the rotor receiving sleeve in a rotationally fixed manner.

A water-flow power generating apparatus for generating electricity by a force of a water flow in water includes a main body including one rotor configured to rotate by a force received by blades from a water flow, a generator generating electricity by a rotation force of the rotor, and a pod accommodating the generator; a mooring cable for mooring the main body to a bottom of water; and a connecting mechanism for connecting the mooring cable to the pod. The mooring cable and the pod are relatively movable along a vertical plane orthogonal to a center axis of the rotor. A center of buoyancy of the apparatus main body is on a vertical upper side with respect to a center of gravity of the apparatus main body.

The present turbine is intended for use in the field of renewable energy. The turbine comprises a rotor with a guide apparatus disposed thereon, said guide apparatus having inlets for a working fluid which are in the form of ducts that spiral around each other in helices and have nozzles situated along a tangent to the circle of rotation. The guide apparatus is configured in the form of adjacent ducts which are open along their entire length or along at least a significant portion of their length and are situated on second order surfaces of revolution or on portions of such surfaces, and in particular on convex-concave surfaces of the pseudosphere type with a cone in the pole of an axial cowl of the rotor. The result is in simplification of the structure and reduction in the turbine mass, the gyroscopic effect and the starting speed of the working fluid.