Abstract: A device management method includes a first network device sending a first remote procedure call (RPC) request message to a second network device, where the first RPC request message includes information about a third yet another next generation (YANG) module that is identifiable to the first network device. After the second network device switches to the third YANG module, the first network device establishes a control session between the first network device and the second network device based on the third YANG module. When the network device supports switching between YANG modules of different standards, the second network device is notified, by using an RPC, to switch to a YANG module supported by the first network device.

Abstract: Various methods and systems are provided for an electric turbocharger. In one example, the electric turbocharger includes an electric motor circumferentially surrounding a shaft, a turbine coupled to a first end of the shaft, and a compressor coupled to a second end of the shaft, opposite of the first end. The compressor may include a volute with a curved portion protruding towards the turbine.

Abstract: A cavitation boiler segment includes a rotor to be coupled with a rotating inner drum and a stator surrounding the rotor segment. The rotor and the stator each include drums with two banks of annular apertures, which overlap to define two cavitation regions. The rotor includes a web bifurcating the rotor between the apertures into an upstream side and a downstream side, each forming a separate fluid passage between a face of the rotor and a bank of apertures. The stator includes a casing enclosing the stator apertures in a fluid passageway. In operation, fluid flows into a first side of the rotor, across a first cavitation region and into the stator, then back across the second cavitation region and into the second side of the rotor where the fluid may flow into a first side of an adjacent segment.

Abstract: A cooling system for a turbine engine for directing cooling fluids from a compressor to a turbine blade cooling fluid supply and from an ambient air source to the turbine blade cooling fluid supply to supply cooling fluids to one or more airfoils of a rotor assembly is disclosed. The cooling system may include a compressor bleed conduit extending from a compressor to the turbine blade cooling fluid supply that provides cooling fluid to at least one turbine blade. The compressor bleed conduit may include an upstream section and a downstream section whereby the upstream section exhausts compressed bleed air through an outlet into the downstream section through which ambient air passes. The outlet of the upstream section may be generally aligned with a flow of ambient air flowing in the downstream section. As such, the compressed air increases the flow of ambient air to the turbine blade cooling fluid supply.

Abstract: A hybrid wind machine includes a fan shaft to drive a fan, and an electrical motor/generator combination, coupled to the first shaft, so as to allow the electrical motor/generator to drive the fan shaft when the wind machine is operating in a wind generating mode. Further, the coupling of the electrical motor/generator combination to the fan shaft allows the fan shaft to drive the electrical motor/generator combination as an electrical generator when the wind machine is operating in a power generating mode.

Abstract: The invention relates to a unit comprising a hydraulic turbine (1), a duct (5) leading a forced flow of water to the turbine, a duct (8) discharging the outgoing flow from the turbine and vanes (20) for guiding the flow through the discharge duct. Each guide vane (20) is able to rotate about an axis (x22) secant to the wall (84) of the discharge duct. Means (30) are provided for controlling the angular position of the vane (20) about its axis of rotation (x22). Each guide vane (20) can also be retracted into the wall (84) of the discharge duct (8), and means (21) are provided for adjusting the extent to which they are withdrawn into the wall.

Abstract: In a pump turbine which can be operated in a pumping mode or a generating mode by switching the rotating direction of a runner, the discharge passing through the runner is adjusted based on a wicket gate opening; the speed of the runner is sensed; a target speed is temporarily set to a first speed different from a rated speed on generation starting; a response speed of a speed control via discharge adjusting means is controlled to a lower level after the speed reaches the target speed than that before the speed reaches the target speed; and finally, the target speed is slowly led to the rated speed, thus enhancing the stability of the speed when the turbine is started and enlarging a head range in which synchronization is achieved.

Abstract: A residential method for treating water with an oxidizing gas operates under elevated pressure. The elevated pressure is obtained by means of a pressurized oxidizing gas source (eg. an air pump) or a Prandtl layer turbine. The elevated pressure of the treated water is optionally used to dispense the treated water. The Prandtl layer turbine may be used to obtain particularly fine bubbles of a gas (eg. bubbles from about 1&mgr; to about 20&mgr; in diameter) in a liquid.

Abstract: An upper reservoir-side conduit or a lower reservoir-side conduit is branched in the vicinity of pump-turbine ends and at least a first pump-turbine out of a plurality of pump-turbines which share the conduit portions located farther than the branch points with the other pump-turbine or pump-turbines is provided with a rotational speed increase detector. When it is detected that the rotational speed of the first pump-turbine has exceeded a second predetermined value higher than a rated speed, a command is issued also to at least one of the other pump-turbines to limit the guide vane closing speed in that pump-turbine to a speed approximately equal to or lower than the speed after the shift to a slow closing of the guide vanes.

Abstract: An upper reservoir-side conduit or a lower reservoir-side conduit is branched in the vicinity of pump-turbine ends and at least a first pump-turbine out of a plurality of pump-turbines which share the conduit portions located farther than the branch points with the other pump-turbine or pump-turbines is provided with a rotational speed increase detector. When it is detected that the rotational speed of the first pump-turbine has exceeded a second predetermined value higher than a rated speed, a command is issued also to at least one of the other pump-turbines to limit the guide vane closing speed in that pump-turbine to a speed approximately equal to or lower than the speed after the shift to a slow closing of the guide vanes.

Abstract: A bi-directional airflow controllable system for controlling flow of air through an air circulating system to at least one zone an air temperature of which is to be controlled is coupled to an airflow duct to aid or oppose airflow throughout the duct and the system to the zone. The bi-directional airflow controllable system includes a fan positioned to interact with air moving through the system and the duct. The fan is coupled to a motor to be energized to drive the fan in a forward or reverse direction. The fan when driven by the energized motor in a forward direction creates air pressure from the fan to oppose the flow of air from the airflow duct. The fan when driven by the energized motor in a reverse direction aids the flow of air from the airflow duct. A bi-directional airflow control unit is electrically coupled to the motor.

Abstract: The invention is directed to a method and apparatus for controlling airflow in a given direction in an air circulating system in which the method comprises the steps of:(a) placing a motor driven fan in the air circulating system in such a manner that the fan, when driven by the motor, creates pressure in a direction opposing the given direction of airflow, and(b) activating the motor to drive the fan to cause the airflow moving in said given direction to be diminished because of said opposing pressure.The apparatus is directed to an air flow controllable register for controlling a flow of air through the register from a register air flow supply duct in response to an externally provided control signal that commands differing airflow rates through the register. More specifically, the air flow controllable register includes a register flow control unit that includes a rotary mounted fan positioned within the register airflow supply duct. The fan is coupled to a motor.

Abstract: A rotating fluid machine for reversible operation from turbine to pump and from pump to turbine having a simple structure which allows for easy manipulation when reversing operation, and having a low change in efficiency when the machine operates in reverse. The fluid machine includes a bladed rotor containing a rotor spindle, a rotor disk, at least one radial groove, a carrying pin integral to the rotor disk, and at least one rotor blade. The blade, which controls the fluid flow, possesses two identical tongues that extend symmetrically with respect to the axis of the carrying pin and protrude with respect to the rotor disk. The machine possesses an external duct for input of the fluid to the fluid duct. The blade of the carrying pin then rotates in accordance with the toroidal structure of the bladed rotor, allowing the fluid to pass through three passages and to exit by way of a second external duct.

Abstract: In a power assistance system for a vehicle steering mechanism fluid pressure providing the assistance is supplied from a pump driven intermittently by an infinitely-variable electric motor. For a rack and pinion mechanism fluid pressure chambers are formed by sealing boots at each end of the rack, and are connected through the pump, which is operative to create a pressure differential between the chambers, and thus across the rack to provide power assistance. The electric motor is energized as required to drive the pump in the appropriate direction, and when the motor and pump are inoperative fluid is allowed to flow freely between the chambers to accommodate fluid displacement as a result of unassisted operation of the steering. The pump is preferably a turbine pump, which allows fluid flow when inoperative. The system provides power assistance efficiently, and relatively cheaply.

Abstract: Apparatus and method for reducing the effects of draft tube pressure fluctuations acting on a runner in a hydraulic reaction turbine or the effects of suction tube pre-rotation acting on the impeller in a centrifugal pump. A closed surge suppression chamber is mounted about the exterior of the turbine draft tube or pump suction tube. A plurality of openings are provided about the exterior of the draft tube or pump suction tube communicating with both the interior of the draft tube or pump suction tube and the interior of the chamber near its bottom thereof. An air inlet is provided leading into the chamber at the top thereof. In operation, and during operation of the turbine or pump where a rotating helical vortex of water has formed in the draft tube or pump suction tube, water flows from the draft tube or pump suction tube through the openings and into the bottom of the chamber while air is injected into the top of the chamber.