A turbocharged compressor system using an Organic Rankine Cycle system to recover waste heat from a compression process. The Organic Rankine Cycle system circulates an organic fluid through an evaporator, where the organic fluid vaporizes and is expanded in a turbine section of a turbocharger to drive a compressor section of the turbocharger. The organic fluid vapor is condensed in a condenser and is pumped to the evaporator once again for recirculation. The compressor section of the turbocharger pre-compresses a working fluid before entering an airend in a compression system. As the working fluid exits the airend, it may be delivered to the evaporator, where the waste heat from the working fluid evaporates the organic fluid flowing in the Organic Rankine Cycle system. The working fluid may also be circulated between intercoolers in multi-stage compressor systems.

A waste heat recovery system includes a Rankine cycle (RC) circuit having a pump, a boiler, an energy converter, and a condenser fluidly coupled via conduits in that order, to provide additional work. The additional work is fed to an input of a gearbox assembly including a capacity for oil by mechanically coupling to the energy converter to a gear assembly. An interface is positioned between the RC circuit and the gearbox assembly to partially restrict movement of oil present in the gear assembly into the RC circuit and partially restrict movement of working fluid present in the RC circuit into the gear assembly. An oil return line is fluidly connected to at least one of the conduits fluidly coupling the RC components to one another and is operable to return to the gear assembly oil that has moved across the interface from the gear assembly to the RC circuit.

A ventilation fan with illumination includes a housing, a fan, and lighting equipment in the housing. The housing includes a first opening communicating with an air outlet, the first opening communicating with a duct, and a second opening that communicates with an interior space, The lighting equipment includes a light, a cover in the housing that surrounds the light periphery, the cover reflecting light and transmitting the light into the space through the second opening, and a restrictor that restricts passage of air between the light periphery and the lighting cover. An air intake gap is provided between a lower end of the cover and an edge of the second opening and introduced through the second opening and the air intake gap, is discharged through the first opening into the duct, the edge of the second opening being located below the lower end of the cover.

A ventilation fan with illumination includes a housing, a fan, and lighting equipment in the housing. The housing includes a first opening communicating with an air outlet, the first opening communicating with a duct, and a second opening that communicates with an interior space, The lighting equipment includes a light, a cover in the housing that surrounds the light periphery, the cover reflecting light and transmitting the light into the space through the second opening, and a restrictor that restricts passage of air between the light periphery and the lighting cover. An air intake gap is provided between a lower end of the cover and an edge of the second opening and introduced through the second opening and the air intake gap, is discharged through the first opening into the duct, the edge of the second opening being located below the lower end of the cover.

A ceiling fan is provided. The ceiling fan includes one or more fan blades. The ceiling fan further includes a motor. The motor is operatively coupled to the one or more fan blades. The motor is configured to drive rotation of the one or more fan blades. The ceiling fan further includes a light kit. The light kit includes a panel. The panel has an edge extending between a top surface of the panel and a bottom surface of the panel. The light kit further includes at least one light source positioned to illuminate the edge.

A hydraulically adjustable propeller assembly for an aircraft, a land vehicle or a water craft, includes an engine, a propeller unit having a propeller which comprises at least two propeller blades whose pitch is hydraulically settable, a pressure control unit which predetermines a fluid pressure for setting the pitch of the propeller blades and which is hydraulically connected to a pressure chamber of the propeller via a control line, and a pump unit which supplies a hydraulic fluid which is under a base pressure to the pressure control unit. The pump unit is a unit driven independently of the engine and the pressure control unit and includes at least one electrically operated main pump which supplies the hydraulic fluid which is under the base pressure for the pressure control unit.

A motor-compressor unit for sub-sea applications, including a pressure casing, and an electric motor housed in a motor compartment formed in the pressure casing and a compressor housed in a compressor compartment formed in the pressure casing. A shaft drivingly connects the electric motor and the compressor. At least one magnetic bearing rotatingly supports the shaft and a control system is provided for controlling the magnetic bearing. The control system is housed in a control system compartment structurally connected to and supported by the pressure casing.

A liquid pumping device (1) for beverage dispenser comprising: -a housing (2) with a liquid inlet (3) and a liquid outlet (4); -a gear pump (5) positioned in the housing with the liquid inlet communicating with the gear pump; wherein a flowmeter (6) is fluidly positioned in the housing (2) preferably between the gear pump (5) and the liquid outlet (4).

A protector for an electric submersible pump includes a plurality of chambers, with adjacent or consecutive pairs of chambers coupled, e.g., fluidly coupled, via a series or parallel body. The body defines two separate hydraulic circuits, which allows for the inclusion of a shaft seal, even when the body couples consecutive chambers in a parallel configuration or couples to a thrust bearing chamber. The shaft tube circuit can include a compensator and/or a relief valve.

Apparatus and methods for displaying an image by a rotating structure are provided. The rotating structure can comprise blades of a fan. The fan can be a cooling fan for an electronics device such as an augmented reality display. In some embodiments, the rotating structure comprises light sources that emit light to generate the image. The light sources can comprises light-field emitters. In other embodiments, the rotating structure is illuminated by an external (e.g., non-rotating) light source.