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Savonius Turbine - The Remedy To How To Make Home Wind Power Generators Practical
There are a multitude of home wind turbine design types on the market today and this article details the unique Savonius wind turbine. Unlike the more common horizontal home wind turbine designs, the Savonius wind turbine is based on a vertical architecture that relies on vanes to revolve in the wind. This rotation is then moved through a vertical shaft to the generator for the creation of electricity. This wind turbine is the perfect choice for applications that use minimal power, but extreme reliability The simplicity of the Savonius design makes it a popular choice among applications that require as little maintenance as possible.
In the realm of wind generated power there are an assortment of types of equipment used to capture the power of the wind and change it to electricity. Most of the designs follow the typical style of a windmill, or airplane style propeller that sits atop a tower and rotates to catch the wind. The Savonius wind turbine style is different in design because it is a vertical axis wind turbine (VAWT). This means that the actual piece of the turbine that spins looks more like a rotating canister that connect to a vertical shaft joined to the generator which is mounted vertically near the ground. This vertical shaft then catches the wind, spins the shaft to the generator to generate the electrical current.
The beginning design of this kind of turbine was finished in 1922 by Sigurd Savonius, a Finnish engineer. This sort of turbine is used quite often because of it's straightforward design and reliability. Also, because it spins on a flat axis, there is no need to have a directional contraption to keep the unit aligned with the wind direction like other models. It can catch the wind in any direction and reacts automatically to changes in wind direction. This type of turbine is considered a "drag style" turbine from an aerodynamic point of view.
It is designed on the principle that because of the canisters shape, it experiences more drag when moving with the wind than against it and it benefits from the differential created and changes it to rotation. Considering in general drag design turbines are less efficient, it does not produce as much power as its more usual horizontal cousin, but can still have a wide range of applications. This type of wind turbine is used in many of the atmospheric monitoring stations around the world considering these tend to be located in inaccessible areas and the importance of reliability and low power consumption make the Savonius wind turbine a perfect choice.
They are also used on other inaccessible locations like buoys far out in the ocean. They are also sometimes used to draw attention to advertising signs. In this application they are not used to produce any power, but have opposite sides painted contrasting colors to grab your attention as they spin. In general the Savonius wind turbine is a very different design that lends itself to many varied applications. Its simplicity and reliability make it the perfect choice for situations that require low power generation, but rock solid performance
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