BRAYFOIL wings are used in a vertical axis configuration creating optimal lift at low rotational speeds, enabling the use of large, dynamically adjustable wing surface areas.
The benefit is significantly higher energy yield compared to a conventional horizontal axis turbine with similar area footprint and none of the noise, bird/bat mortalities associated with large, high speed turbines and existing small wind turbines in urban areas.
The Brayfoil turbine makes better use of laminar wind flow acceleration and turbulent wind apparent on the edge of buildings or at the cusps of e.g. hills, ridges and forest belts, further improving energy yields.
These turbines will be cost efficient at wind speeds significantly lower than current benchmarks for conventional wind turbines.
The auto setting morphing wing automatically adjusts to weathercock into the changing wind. It does this by setting an angle of attack to the apparent wind by virtue of the reflex section intrinsic to the section at all times, and is therefore able to work well in turbulent wind conditions, and without damage to the machine.
2 to 15 times more kWh can be generated per m2 of surface area/space occupied than solar PV and existing small wind turbines.
The BRAYFOIL wind turbines have a simple design, and are suitable for urban areas with high electricity demand. They will provide embedded and/or grid tied generation.