The main complication of a Wind Funnel is to turn the entire thing into the
A small aerodynamically perfect
Wind Funnel Technology to Enhance Efficiency of Low Wind Turbines
Wind Funnel Technology to Enhance Efficiency of Low Wind Turbines
The main complication of a Wind Funnel is to turn the entire thing into the
wind. Bernoulli and his Physics are very useful in search of a ratio of
mouth to throat area with acceptable air flow.
wind. Bernoulli and his Physics are very useful in search of a ratio of
mouth to throat area with acceptable air flow.
A small aerodynamically perfect wind turbine design is easy to build. The
turbine would rotate fairly fast.
Savonius Type Vertical Axis Wind Turbine
Two types of vertical axis wind turbines, Savonius and Darius, are mostly used. The Savonius wind turbine was invented by Sigrid Savonius of Finland. Although, the Savonius type of vertical axis windmill less efficient than a conventional design but it does not need to be kept in a single direction. With simple junk like oil drums, car alternator or dynamo, you can build wind generator. This is wind generator will charge 200 watts battery.
Characteristics of Savonius Wind Turbines
Savonius wind turbines are not needed to be installed on high towers and polarity or direction of the wind turbine does not change with the direction of wind and over the land surface and Roof-top installation is normally used. Materials and construction cost is much lower than horizontal axis wind turbines. Split a barrel into half and putting together these two vertically split halves to a vertical axis. This creates a low speed high torque unit that can be utilized for driving water and through a gearing mechanism, generate electricity.
This design works on "magnus principal", an aerodynamic effect. The most everywhere usage of the Savonius wind turbine is the Flettner Ventilator. It employs the design of Savonius wind turbine to drive an extractor fan.
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