Our patented technical solution

When the wind blows against a house its walls inevitably react with the air stream and an increase in air pressure is set up on the side facing the wind as the air flows around and over the building.

In this (patented) application, the upward flowing portion of the air flow opens flaps in the eaves and becomes trapped under the house roof from which it can only escape through a shrouded circular opening at the apex of the roof.

A conventional wind turbine is mounted "helicopter rotor" fashion within the shroud to take advantage of the wind energy collected by the, relatively speaking, much larger area of the house wall.

The wind flow over external surface of the sloping roof adds some extra energy to the system as the change of direction at the apex produces a "suction effect" in the vicinity of the rotor outlet.

Clearly it is desirable to add an "inner roof" to provide heat insulation, weather protection from any rain etc., that might come through the opening at the top and a conventional attic space for domestic water tanks etc., as well as protection for equipment driven by the turbine shaft.