Vortex enhanced wind turbine diffuser

A diffuser and wind turbine technology, which is applied to wind turbines, wind turbines, machines/engines, etc., which are consistent with the wind direction, can solve the problems of increasing time fouling, function loss, and increasing manufacturing costs, and achieves a reduction in airflow separation. Effects of risk, good material utilization, low manufacturing cost

Inactive Publication Date: 2012-07-11
KINETIC HARVEST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A potential problem with the use of these holes is increased manufacturing cost along with increased potential for fouling and loss of function over time

Method used

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  • Vortex enhanced wind turbine diffuser
  • Vortex enhanced wind turbine diffuser
  • Vortex enhanced wind turbine diffuser

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0064] In the drawings, preferred embodiments of the invention are illustrated by way of example. The description and drawings are for the purpose of illustration and of a preferred design only, and are not meant to limit the limitations of the invention.

[0065] exist figure 1 middle

[0066] An embodiment of the invention is shown where the leading edge of the duct (1) transitions radially with increasing chord and thickness to a transition point (2) where the winglets (4) split to go outwards and rearwards Extend until the winglet can be attached to the adjacent winglet (3).

[0067] exist figure 2 middle

[0068] The same embodiment is shown in a side view and a front view showing the joining of multiple segments.

[0069] exist image 3 middle

[0070] The embodiment shown with a convoluted trailing edge (5) is used to facilitate mixing of low energy flow and high energy flow through the Venturi effect. A power pod (6) is mounted in the center of the duct and fo...

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PUM

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Abstract

A diffuser for a wind turbine where slots in said diffuser wall entrain air to enter into the diffuser with a swirl that is counter to the internal swirl created as a reaction to the turbine blades rotation as it extracts power such that the internal swirl and the externally introduced swirl cross over each other thereby causing vortices to form between them that energizes the internal flow and helps to prevent it from separating from the internal duct wall.; Such a diffuser would beneficially consist of a radial array of repeated segments each comprising a radial portion of a duct with a wing emerging from behind said duct leading edge and spiraling out and backwards and connecting back onto the wing of the next segment round such that each segment's wing connects to the trailing neighboring segment wing just as the leading neighbors wing connects onto it, and that a gap is left between the spiral arms to permit external air to flow between the trailing edge of one segment wing and the leading edge of the adjacent wing.

Description

technical field [0001] The present invention relates to a new compact diffuser for enhancing the pressure differential across a turbine blade set to extract more power for a given turbine diameter. [0002] The present invention involves the use of aerodynamic cowlings that draw airflow into ducts, increasing the pressure in front of the turbine blades and diffusers to create low pressure behind the turbine blades, thereby increasing the pressure differential. This device achieves optimum efficiency with maximum robustness in minimum size. Background technique [0003] Well known and understood are diffuser enhanced wind turbines (DAWT). Said wind turbines first appeared in the seventies, when several patents were issued for both small and large installations. [0004] A diffuser will speed up the wind passing through the turbine, and since power is proportional to the cube of wind speed, the use of a diffuser enables smaller diameter blades to achieve the same electrical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/04
CPCY02E10/72F05B2240/13F05B2250/15F05B2240/133F03D1/04F05B2250/25F05B2250/5011F05B2240/122F03D13/20
Inventor 拉尔夫-彼得·S·贝利
Owner KINETIC HARVEST
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