It is an object of the present invention to remove power converter 22 from the high speed flow passing by impellor 16. The Background of Invention section of this application cites examples of wind turbines where the alternator or generator must be faired in to minimize aerodynamic drag losses incurred by the necessary placement of these elements within the high speed wind flow. Any non-essential drag in this area will directly subtract from the wind energy available for conversion. U.S. Pat. No. 5,599,172 entitled “Wind Energy Conversion System” to McCabe (1997) provides an example of a single shroud surrounding the turbine rotor blades and includes a description of the shroud acting as a venturi. U.S. Pat. No. 6,623,243 entitled “Minimization of Motion Smear, an Approach to Reducing Avian Collisions with Wind Turbines” to Hodos, (2003) emphasizes the need to address the serious problem of bird strikes by modern high speed wind turbine rotor blades.
- Flexible membrane 4, it has length of run LIt is minimum；With
- Bajos niveles de oxígeno en la sangre
- Una válvula cardíaca anormal
- Ayudar a mejorar la movilidad articular
- Remueve y humedece si es necesario
- Ejercicios con rodillo
- Afecta muchas articulaciones, como muñecas, codos, hombros, caderas, rodillas y tobillos
U.S. Colchon para dolor de espalda . Pat. No. 4,166,596 entitled “Airship Power Turbine” to Mouton, Jr., et al. FIG. 6 therefore illustrates schematically, a cross section of the flow of wind through turbine shroud 14 and through three additional shrouds or concentrator wings 12. Turbine shroud 14 serves to enclose impellor 16 which in turn serves to react with the wind flowing through turbine shroud 14 and drive power converter 22, not shown in this illustration, such as an alternator or generator. While it is given that the impellor blades produce a downstream turbulence it is not agreed that this turbulence is the cause of the “large vortex behind the turbine”. In theory, and in practice, the highest energy extraction efficiency occurs when the wind is decelerated immediately downstream of a wind turbine to about ⅓ of its original free flowing velocity.
Concentrator wings 12 and flow regulator 18 work in conjunction to direct the wind flow outwards away from the central axis as described and cause the formation of a ‘dead’ or slow moving airspace downstream of the aerodynamic surfaces of flow regulator 18. This dead airspace provides an ideal location for power converter 22 especially when housed within flow regulator 18 and protected from weather and other elements of the natural environment. 3 then represents an aerobraked position where the force of the gusting or overly high speed wind is pushing against concentrator wings 12 or turbine housing 14 or other elements and causing collar 36 to compress compression spring 24 and slide in a downwind direction towards flow regulator 18 thus closing the gap between the outlet of turbine shroud 14 and the aerodynamic surfaces of flow regulator 18. Also of note is the position of impellor 16 relative to the inlet of turbine shroud 14 in the non-aerobraked condition as illustrated by FIGS.
Dolor Muscular En El Pecho
It is the static pressure gradient therefore between the inlet of turbine shroud 14 and the outlet of same that causes the wind to be drawn powerfully through turbine shroud 14 and drive impellor 16 and power converter 22. This draw can in fact be so powerful, especially in higher winds, that the flow of wind outwards from turbine shroud 14 can disturb the smooth or laminar flow of wind over and between concentrator wings 12. This occurrence is illustrated in FIG. Shrouded turbines generally allow the use of smaller and more enclosed rotor blades or impellors, and have physical shrouds or ring shaped concentrator wings that are highly visible to birds in flight but at the same time do not present moving objects, such as large rotating blades that are considered by many to visually mar the natural landscape.
Dolor Sordo En El Pecho
Concentrator wings 12 operate fundamentally the same as aircraft wings and have similar profiles as may be readily seen from FIG. FIG. 4 schematically illustrates a cross section of the more laminar flow of wind over and between concentrator wings 12 when the device of the present invention includes flow regulator 18. Flow regulator 18 is a component having aerodynamic surfaces that cause the stream of wind that is drawn into turbine shroud 14 to be directed outwards and away from a central axis running approximately parallel with the oncoming wind and through the centers of concentrator wings 12. This re-direction of the jet of wind exiting turbine shroud 14 maintains or promotes a smooth flow of wind over the top surfaces of concentrator wings 12 and thereby eliminates or reduces the aerodynamic stalling of concentrator wings 12 that would otherwise occur.
Dolores Musculares En Los Brazos
6. These profiles generally have a top convex shaped surface to accelerate the flow of wind, and a lower flattened or concaved surface that tends to slightly decelerate the flow of wind past three surfaces. The observed behavior of these birds is to focus so intently on the object of prey that they do not become aware of the hazard and are often struck and killed by the high speed rotor blades. 4 is the closer proximity of flow regulator 18 to turbine shroud 14. This closer proximity restricts the flow of wind out of turbine shroud 14 thereby acting to aerodynamically brake impellor 16 in the event of overly gusting or very high speed winds. Aerobrake 20 therefore includes flow regulator 18 and turbine shroud 14 and an adjustment of the proximity between flow regulator 18 and turbine shroud 14 to prevent impellor 16 or other components of invention 10 from overspeeding or exceeding other design limitations in gusting or very high speed winds.
2, in conditions where the wind is not overly gusting or overly high speed, invention 10 will maintain a non-aerobraked condition with one of collar 36 pressing against compression spring 24. FIG. The use of markings and colorings may also improve the blending of embodiments of invention 10 within other highly textured natural landscapes without creating a hazard for birds in flight. Colchon nuevo dolor de espalda . Concentrator wings 12 may also be made more noticeable by application of contrasting colors, shades or patterns made on these elements for installations of embodiments of invention 10 within relatively featureless landscapes as are found within prairies or deserts. The preceding descriptions serve to explain the main objects and advantages of invention 10. The scope of the invention should not be determined by the embodiments as described or illustrated, but by the appended claims and their legal equivalents.
As well, the added weight increases the demands made on the braking system itself and adds to the hazard should a component failure occur. The smaller diameters of turbine shroud 14 easily lend to the screening over of the inlet to this element should this be proven necessary. 6 by the wavy appearance of the arrows indicating a disturbed wind flow over and between concentrator wings 12. This phenomenon has been verified both experimentally and through computer simulation using modern fluid flow computer software. This article describes a prototype wind turbine having two shrouds or concentrator wings that allow a flow of air between the shrouds to develop an area of lower static pressure downwind of the turbine. Aerobrake 20 allows concentrator wings 12 or turbine shroud 14 to be pushed by the force of a gusting or high speed wind upon these elements.