Wind energy is together with hydro power one of the renewable forms of energy, that in an overall perspective cause the least CO2-emission (M.Jakobsen 12/08). Furthermore, is wind energy, especially in our climes, often alternating available to solar energy (If there is no sun, usually there is wind). This is also valid seasonal (highest wind energy in winter). While the usage of solar energy tends to move towards decentralization, the usage of wind energy just starts.
The wind turbine is based on the principle and the advantages of a Savonius-rotor. It can easily be deployed everywhere (especially also in densely populated areas). Therefore, the small wind power facility provides the following features:
- Cost-efficient and easy constructible and easy to assemble (perhaps building integration)
- High torque at a relatively low rotational speed (nearly ground level)
- High efficiency unaffected by the direction of the wind, no alignment with the wind necessary
- Even usable at extremely low wind speeds (2-3 m/s)
- Storm-proof due to autonomous power limitation
- Barely noticeable running noise, no bird strike
- Turning parts are barely visible
- Improvement of the wind situation at the location (behind the turbine - alternate function as a windshield)
Having the input, a form for the prototype, which measures up with the latest knowledge, has been developed. Previously a comprehensive literature research has been conducted. The turbine works well as a decentralized, building integrated wind energy facility and is supposed to be merchandised as such later on.