upward wind turbine

"Horizontal" wind generators can reach speeds faster than the wind passing them, by setting the width and attack angle of the wings. Vertical wind generators can only move at the speed of the wind. Horizontal wind generators must be directed to the wind. In turbulent winds (near urban roofs etc) there is much energy lost, and this is a major drawback.

Enters the "Upward Wind Turbine". A simple winding ducts contraption which looks a bit like a large cockroach trap, captures wind from any direction, and sends it winding upward. At the top of the contraption there is a regular turbine that can reach the typical higher speeds of a horizontal generator. A cover which creates low pressure at the exit by a wing effect, could be added for better efficiency. This cover could be directed to allow wind out only in the direction of the wind by using a sail, or simply by shape (where the exit holes are always directed to towards the middle base).

The whole contraption could be set "upside down" so that the entrance is on top, and the exit on the bottom. For urban building roofs, usually with a fence around the roof - this would be great, since the fence would cause a low pressure area (no wind).

PLEASE NOTE that the windings are STATIC. Not like any of the Darius et al generators. And, if I understand correctly, not like the "vertical-hub Airscrew" idea here in this category.