A ceiling fan may include a housing having a central longitudinal axis, an inlet, and an interior in fluid communication with the inlet. The ceiling fan may include a nozzle disposed around a portion of the housing that may be spaced a distance apart from the housing and define an interior passageway and an outlet in fluid communication with the interior passageway. The ceiling fan may include a conduit disposed between portions of the housing and the nozzle in fluid communication with the interior of the housing and the interior passageway of the nozzle. The fan may further include an impeller disposed in the housing and a motor coupled to the impeller. The motor may rotate the impeller for drawing air into the interior of the housing through the inlet, moving air through the conduit and the interior passageway, and expelling air out of the outlet in a preferential direction.

An apparatus, system and method to reduce the contaminate concentration of effluent before discharge is provided utilizing discharge pipes, inlets and outlets. The apparatus comprises a central bore having an internal diameter suitable for a fluid flow, the fluid flow moves inside the central bore through the apparatus, and at least one outlet, the fluid flow exits the apparatus through the at least one outlet, a plurality of inlets for flowing additional fluid to the central bore, and the inlets mix the fluid flow with the additional fluid from the plurality of inlets. The apparatus can further mix the effluent though additional mixing devices and additional devices can be used to recapture energy such as, hydroelectric power from the fluid flow. A method reduces the effluent concentration by mixing for example, by creating a helical flow in the central bore.

A concentrator nozzle attachment for a blower device is disclosed that increases the airflow velocity of the blower without sacrificing the field of the jetting air. The concentrator nozzle is formed of an outer ring with a centrally located guide surface and is placed at the exit of an air tube. As the air exits the air tube, it's forced to flow around the guide surface, thus increasing its velocity. The attachment is secured to the end of the air tube and so does not alter the outer diameter through which the air exits. In this way, air velocity is increased without reducing its effectiveness.

A fluid turbine assembly (1), comprising: at least a main rotation shaft (2) being configured to rotate around a longitudinal rotation axis (X), a main rotor (3) comprising a central portion and an outer portion, the main rotor (3) being installed on the main rotation shaft (2) in such a way to bring the main rotation shaft (2) in rotation with the main rotor (3), at least an auxiliary rotation shaft (2x), a secondary rotor (10), the secondary rotor (10) being installed on the auxiliary rotation shaft (2x) in such a way to bring the auxiliary rotation shaft (2x) in rotation with the secondary rotor (10), an inlet assembly (4) for a fluid, said inlet assembly (4) being configured to drive a fluid to the main rotor (3) and/or to the secondary rotor (10),
wherein at least the main rotor (3) and the secondary rotor (10) have different mechanical characteristics and/or inertia and/or wherein at least the main rotor (3) is configured for delivering a first power and the secondary rotor (10) is configured for delivering a second power,
the fluid turbine assembly (1) being configured to provide rotation power and/or torque to the main rotation shaft (2) through the main rotor (3) and/or to the auxiliary rotation shaft (2x) through the secondary rotor (10) or to select the rotation power and/or torque distribution from said main rotation shaft (2) and/or from the auxiliary rotation shaft (2x) according to a predetermined and automatically selectable criterion of selection of rotation power and/or torque transmission from at least one between said main rotor (3) or said secondary rotor (10).

Systems and methods related to linear turbine systems are presented. Each embodiment described herein may be designed as a single-stage, linear, impulse turbine system. In an embodiment, a linear turbine includes a first shaft extending along a first axis; a second shaft extending along a second axis, the second axis being separated from and substantially parallel to the first axis; a first plurality of buckets to travel a first continuous path around the first shaft and the second shaft along a first plane, the first path including a first substantially linear path segment between the first axis and the second axis; and a nozzle configured to direct a first fluid jet to contact the first plurality of buckets in the first linear path segment.

A funnel wind turbine has a horizontal funnel, rotor blades in the narrower end of the funnel, the rotor blades coupled to a rotor, a shaft coupling the rotor to a generator, and a support tower. The funnel wind turbine may have bearings or a yaw system to allow rotation of the horizontal funnel on the support tower. The funnel wind turbine may have wind direction and speed sensors, an electronic control unit, and a communication device (e.g., cellular antennas, radio transmitters/receivers, etc.) for transmitting information such as wind speed and direction, power generation, and efficiency to a distant receiver.

Systems and methods related to linear turbine systems are presented. Each embodiment described herein may be designed as a single-stage, linear, impulse turbine system. In an embodiment, a linear turbine includes a first shaft extending along a first axis; a second shaft extending along a second axis, the second axis being separated from and substantially parallel to the first axis; a first plurality of buckets to travel a first continuous path around the first shaft and the second shaft along a first plane, the first path including a first substantially linear path segment between the first axis and the second axis; and a nozzle configured to direct a first fluid jet to contact the first plurality of buckets in the first linear path segment.

A high efficiency induced-flow wind power system engages and converts both potential (to-pull) and kinetic (to-push) wind energies to effective airflow power, delivering induced (accelerated) airflow power in a controlled flow field to a turbine/rotor, impelling a 360-degree torque on the turbine/rotor and, as a result, extracting (converting) more than 80% of the combined effective wind power to mechanical power. The induced push-pull effect results in higher efficiency wind-to-mechanical power extraction (conversion). The induced-flow wind power system can be coupled with (i) an electrical generator, inverter/converter for generating AC and DC power, (ii) pressurized vessel for effective energy storage (iii) a pressurized structure, such as an air supported structure, to ensure its structural integrity. The Induced-Flow Wind System embodiment comprises: a passive-flow nozzle, an active-flow nozzles and a turbine encased in housing interposed within the flow field of the active-flow nozzle and coupled with an electrical generator or a compressor.

A fluid accelerator including an outer housing having an inlet end and an outlet end, the outer housing defining a converging nozzle proximate the inlet end. The fluid accelerator may also include an annular ring disposed proximate the inlet end of the outer housing within the converging nozzle, wherein the annular ring has an airfoil cross-sectional shape.

The invention relates to a device for converting wind energy to at least mechanical energy, comprising a rotor with a number of rotor blades drivable rotatably about a rotation axis by wind and a duct disposed therearound, wherein a central axis of the duct substantially coincides with the rotation axis of the rotor, characterized by guide means disposed upstream of the rotor for guiding the wind in a substantially helical movement round the central axis during use of the device such that the wind is supplied in the substantially helical movement round the central axis to the rotor.