Vertical Axis Wind Turbines have been in existence for over 1300 years. Traditionally, they were used for such tasks as pumping water and grinding crops. Today, they are at the headlining the micro wind industry as an alternative to the Horizontal Axis models. Vertical Axis Wind Turbines represent a reliable, practical and cost effective method for generating energy anywhere the wind blows.
So, why are they called Vertical Axis wind Turbines? In a nutshell, this is because the rotator shaft in a Vertical Axis Wind Turbine is placed perpendicular to the ground. As a result, a number of advantages become available when using this system.
First, Vertical Axis Wind Turbines are Omni Directional. This means that they can capture wind power without having to be positioned in the direction that the wind is coming from. It also means that they have less Moving Parts than their horizontal counterparts. This makes them more reliable and much less costly to maintain.
Second, Vertical Axis Wind Turbines produce a substantial amount of torque. This is due to the fact that the blades on the turbine have a much larger surface area than the blades found on a horizontal axis turbine. As a result, Vertical Axis Wind Turbines can be coupled directly to a water pump for example. The result is that the efficiency of converting the energy to directly power the application will be much greater.
Finally, Vertical Axis Wind Turbines are designed to spin at a much slower speed than Horizontal Axis Turbines. Is this a disadvantage you ask? Not in the slightest! Spinning at a slower speed allows the turbines to function in much higher wind speeds. It also reduces noise and vibrations, is safer for birds and can be camouflaged into an urban or rural setting much more effectively, making Vertical Axis Wind Turbines a great option.