May 16, 2009, which is a U.S. Preferably, the controller is adapted to control movement of the lift generating element into a position closer to parallel to a vertical plane, which plane is parallel to the direction of the fluid flow passing the member, if the value sensed by the sensor is indicative of fluid forces that may damage the device.
The member 20 is adapted to move relative to the base 12, in response to the water flow F, towards a position in which the longitudinal axis 21 generally aligns with a vertical plane P parallel to the direction of the water flow F passing the member 20. The member 20 is able to freely pivot around the base 12, through 360 degrees, in response to changes in the direction of water flow. However, if the value sensed by the sensor is indicative of water forces that may damage the device 10, the controller is adapted to control the application of external power to the actuator (not shown) via the torque motor to move the hydrofoil 26 into a position closer to parallel to a vertical plane, which is parallel to the direction of the water flow F and passes the member 20, to reduce water forces on the device 10. Depending on the value indicated by the sensor, the hydrofoil 26 may be moved into and maintained in a streamlined configuration substantially parallel with this vertical plane.
Pat. No. 6,731,018 is that it inefficiently responds to changing magnitudes of water flow due to its inability to broadly vary its motions, as a result of its fixed alignment. Also, instead of generating electricity, the device may be fitted with a reciprocating pump to create a source of high pressure water for desalination or may be adapted for driving other external devices. Dolor en las piernas de la rodilla hacia abajo . Also, by mounting the hydrofoil 26 on the end of the elongate member 20, the moment of inertia generated by the hydrofoil 26 is increased, which correspondingly increases the oscillating energy imparted to the output shaft (not shown). 1 and 2, a streamlined oscillatible member 20, having a longitudinal axis 21, is pivotally connected, about a generally vertical pivotal axis 22, to the column 16, at end 20 a. The hydrofoil 26 is pivotally movable, about the pivotal axis 27, relative to the direction of the water flow, to vary a direction of lift produced by the hydrofoil 26 as water flows therearound to thereby drive the member 20 in oscillatory motion, about the pivotal axis 22, relative to said base 12. The hydrofoil 26 has a generally lunate shaped surface 28 extending between its leading 30 and trailing 32 edges.
Dolor Muscular Piernas
The base 12 forms part of a mooring for anchoring the device 10 relative to the water flow. Pat. No. 6,731,018 is that energy from the flow is transferred to the generators in an indirect manner, having to pass through multiple intermediate stages (water to hydrofoils, hydrofoils to tank motion, tank motion to air compression, air compression to flow across turbine), which together reduce the overall efficiency.
Dolor Sordo Significado
If required, the motor/generator 34 can be supplied with external electrical power, under control of the controller, to hold the member 20 in a fixed position, against the action of water forces. In a tidal turbine application, space may not be an issue and large diameters, for example 10 m and 20 m respectively can be utilised to greatly enhance the power output. Pat. No. 6,731,018 is that it inefficiently captures energy from the water flow, due to the required movement of a large tank against the resistance of the water. A sensor (not shown) is provided for measuring water flow parameters, including the speed and direction of the water flow F. A controller (not shown) is responsive to the sensor for controlling movement of the hydrofoil 26, in real-time, based on an output of the sensor.
Pat. No. Cremas dolor de espalda . 6,731,018 is that it can not realign with changing directions of water flow. The hydrofoil 26 is formed from a composite material and has upper and lower portions that are adapted to flex in response to water forces. An energy transfer mechanism, in the form of an output shaft (not shown), is connected to the member 20 and is adapted to be driven by oscillation thereof. Referring to FIG. 1, a machine for extracting energy, in the form of a synchronous permanent magnet motor/generator 34, is driven by oscillatory motion of the output shaft (not shown), which is driven by the member 20. The motor/generator 34 is mounted to the output shaft at the top of the column 16. A stator of the motor/generator 34 is fixedly connected to the column 16 at an underside of the motor/generator 34. A rotor of the motor/generator 34 is held concentric to the stator by a bearing (not shown) mounted at an upper side of the motor/generator 34. The motor/generator 34 is completely sealed and filled with inert gas under pressure to prevent internal corrosion or leaking.
FIG. 3 is a schematic plan view of the device of FIG. FIG. 2 is a schematic perspective view of the member and hydrofoil of the device of FIG. FIG. 4 is a schematic plan view of the device of FIG. 3, the lift T produced by water flowing around the hydrofoil 26 moves the member 20 in an anti-clockwise direction about pivotal axis 22. With the hydrofoil 26 in the position shown in FIG. FIGS. 2A and 2B show the rotor of FIG. In one implementation, the inner and outer conic helix also extend for about the same axial length along the direction of the axis of rotation of the rotor. One embodiment does not permit flow of fluid through either opening of the rotor when the fluid flow has only a radial component and no axial component. FIELD OF THE INVENTION The present invention relates generally to a device for capturing energy from a fluid flow and more particularly from tidal or marine currents or fast-flowing rivers.
Dolor Muscular Antebrazo
1 shows an embodiment of a device 10 for capturing energy from a water flow, such as a tidal or marine flow or fast-flowing river. FIGS. 7A and 7B show an alternative embodiment where the helical pitch is decreased at a greater rate than the rotor of FIGS. Reflexologia para el dolor de espalda . The generators may be mounted, for example, on the internal surface of the inner cone of the rotor, or on the external surface of the outer rim of the rotor.
Dolor Espalda Pecho
While the present invention has been described with reference to a specific embodiment, it will be appreciated that it may also be embodied in many other forms. 1 and 2, a lift generating element, in the form of a hydrofoil 26, is pivotally connected to the member 20, at its other end 20 b, about a generally vertical pivotal axis 27, so as to produce a generally horizontal lift force. In use, the oscillatory motion of the member 20, and of the output shaft (not shown), drives the motor/generator 34 to produce hydro-electricity, which is supplied to a distribution grid (not shown).
Dolor Muscular Cadera
Accordingly, the range of conditions across which the U.S. Another disadvantage of the device disclosed in U.S. A disadvantage of the device disclosed in U.S. 26, 2006. The entire disclosure contents of these applications are herewith incorporated by reference into the present application. Any discussion of documents, acts, materials, devices, articles or the like which has been included in the present specification is not to be taken as an admission that any or all of these matters form part of the prior art base or were common general knowledge in the field relevant to the present invention as it existed before the priority date of each claim of this application.
- Dos buenos aliados para controlar la tensión arterial
- Dolor y rigidez en el cuello
- Plumb the colder (input) water into the lower port on the center housing
- Inicio en la edad media de la vida, sobre todo si es de carácter progresivo
- The apparatus of claim 1, wherein the central core member is rigid
- Compresas de hielo
- Aft most point on the airfoil identified as (17.) above
- Repite el movimiento tantas veces como puedas
11, 2006, which claims priority to AU Patent Application No. 2007/019609) therefrom, the disclosures of which are incorporated herein by reference. 3 and 4, horizontal cross-sections through the hydrofoil 26 are generally bi-convex in shape. 12, 2005 and AU Patent Application No. National Phase Application pursuant to 35 U.S.C. §371 of International Patent Application No PCT/AU2006/001148 (International Publication No. The mooring is disclosed in detail in the Applicant’s earlier filed Australian Provisional Patent Application No. WO 2007/019607) filed on Aug. Sensedol dolor muscular . The actuator is preferably driven by a torque motor that is controlled by the controller. Alternatively, said machine is a pump driven by the oscillatory motion of the energy transfer mechanism. The base preferably includes a circular mounting flange, fixedly connected to said column, for attachment to the ground by a plurality of anchors. Pat. No. 6,731,018 discloses a device for capturing energy from tidal flows and river currents. 1, shown with the hydrofoil in a position for clockwise movement of the member.