Wind energy extraction aerofoil - has trough-shaped front sheet and flatter rear sheet leading into trough at front end

摘要

The aerofoil has at least two coupled sections of differing dynamic functionality, the one supporting the other in order to convert a wind flow into useful energy.Flows from each direction of a horizontal plane are converted into a circulatory flow of at least 270 deg. around the vertical axis of the individual foil sections. Flow from behind rather than from the sides circulates in the trough formation producing a drive force, whilst a flow from the sheet-section passes straight through. On the other hand, when the flow is more from the sides forwards at least 45 deg. right and left of the functional direction of the flow receptor, this leads to a typical lifting airflow. USE/ADVANTAGE - To maximise the use of wind energy in various applications.