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A wind harnessing system comprises a substantially helical structure including at least a portion of a spiraling groove and at least one energy converter positioned at least partially within the portion of the spiraling groove. In other embodiments, wind grooves formed by adjacent bands which are fixed with respect to one another, carry energy converters which are moveable with respect to these fixed bands.

Inventor: Majid Rashidi
Original Assignee: CLEVELAND STATE UNIVERSITY
Current U.S. Classification: 416/9; 290/55

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Claims

1-20. (canceled)

21. A wind harnessing apparatus comprising:

a wind deflecting structure extending along a longitudinal axis and having a wind engaging shell contoured to divide wind impinging on the wind engaging shell into two diverging flow paths; and

a turbine secured to the wind engaging shell and positionable to be driven by one of the two diverging flow paths;

wherein the turbine is rotationally positionable about the longitudinal axis with respect to the wind engaging shell.

22. The apparatus of claim 21, wherein the wind engaging shell is rotationally fixed with respect to the longitudinal axis.

23. The apparatus of claim 21, wherein the wind engaging shell comprises a cylindrical shell.

24. The apparatus of claim 21, wherein the wind engaging shell comprises a thread portion extending radially outward from a core portion, with at least a portion of the turbine being disposed radially inward of the thread portion.

25. The apparatus of claim 24, wherein the thread portion is helical.

26. The apparatus of claim 21, wherein the turbine is moveably mounted on a track disposed on the wind engaging shell for rotationally positioning the turbine with respect to the wind engaging shell.

27. The apparatus of claim 21, wherein the turbine is configured to spin about a rotational axis substantially perpendicular to the longitudinal axis for generation of electrical energy.

28. The apparatus of claim 21, further comprising a drive mechanism configured to rotationally position the turbine about the longitudinal axis to a position facing one of the two diverging flow paths.

29. The apparatus of claim 28, further comprising a wind sensor configured to signal the drive mechanism to automatically rotate the turbine to the position facing one of the two diverging flow paths.

30. A method for generating electrical power comprising:

providing a wind deflecting structure extending along a longitudinal axis, the wind deflecting structure including a wind engaging shell contoured to divide wind impinging on the wind engaging shell into two diverging flow paths;

securing a turbine to the wind engaging shell; and

rotating the turbine about the longitudinal axis and around the wind engaging shell to position the turbine to be driven by one of the two diverging flow paths.

31. The method of claim 30, further comprising fixing the wind engaging shell with respect to the longitudinal axis.

32. The method of claim 30, wherein securing the turbine to the wind engaging shell comprises positioning at least a portion of the turbine radially inward of a thread portion extending radially outward from a core portion of the wind engaging shell.

33. The method of claim 30, wherein rotating the turbine about the longitudinal axis and around the wind engaging shell comprises moving the turbine along a track disposed on the wind engaging shell.

34. The method of claim 30, wherein rotating the turbine about the longitudinal axis and around the wind engaging shell comprises powering a drive mechanism to move the turbine.

35. The method of claim 34, wherein powering the drive mechanism to move the turbine comprises delivering a signal from a wind sensor to the drive mechanism.

36. A wind harnessing apparatus comprising:

a wind deflecting structure extending along a longitudinal axis and having a wind engaging shell with a wind receiving surface contoured to divide wind impinging on the wind engaging shell into two diverging flow paths;

a turbine secured to the wind engaging shell and positionable to be driven by one of the two diverging flow paths; and

a baffle extending from the wind deflecting structure radially outward of the wind receiving surface at a position rotationally downstream of the turbine, the baffle being oriented to be impacted by wind redirected by the wind receiving surface.

37. The apparatus of claim 36, wherein the wind engaging shell is freely rotatable about the longitudinal axis, such that the baffle functions as a sail to position the turbine to face a windstream.

38. The apparatus of claim 36, wherein the baffle comprises a wedge-shaped portion of the wind engaging shell.

39. The apparatus of claim 36, wherein the turbine is rotationally positionable about the longitudinal axis with respect to the wind engaging shell.

40. The apparatus of claim 36, wherein the baffle is rotationally positionable about the longitudinal axis with respect to the wind engaging shell.

Drawings