There are an abundance of wind power turbine design types on the market and this article describes the completely unique Savonius wind turbine. Unlike the more familiar horizontal turbine designs, the Savonius turbine is based on a perpendicular architecture that relies on vertical vanes to revolve in the wind. This rotation is then transferred through a vertical shaft to the generator for the creation of electricity. This turbine is the perfect selection for applications that call for minimal power, but maximum dependability The simplicity of the Savonius design makes it a popular choice among applications that require as little maintenance as possible.

In the scope of wind generated power there are an assortment of styles 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 real portion of the turbine that rotates looks more like a spinning canister that fasten to a vertical shaft joined to the generator also mounted vertically near the ground. This vertical shaft then catches the wind, revolves the shaft to the generator to crank out the electricity.

The first design of this variety of turbine was completed in 1922 by Sigurd Savonius, a Finnish engineer. This sort of turbine is used often because of it's simple design and dependability. In addition, because it spins on a level axis, there is no need to have a directional contraption to keep the unit aligned with the wind 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 prospective.

It is based on the principle that because of the canisters form, it experiences more drag when moving with the wind than against it and it takes advantage from the differential created and changes it to rotation. Considering in general drag type turbines are less efficient, it does not deliver as much power as the more conventional horizontal cousin, but can still have a broad range of applications. This sort of wind turbine is used in the majority of the atmospheric monitoring stations around the world since these tend to be located in inaccessible areas and the importance of reliability and low power consumption make the Savonius wind turbine a great choice.

They are also used on other distant locations like buoys far out in the ocean. They are also sometimes used to attract attention to advertising signs. In this use they are not used to make any power, but have opposite sides painted contrasting colors to grab your attention as they spin. So 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 consummate choice for situations that require minimal power generation, steady performance

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