Wind Turbine Blade Designs
One of the oldest known methods of power generation is the use of wind turbines . Even now, the basic idea behind this type of device remains the same , but design aspects of the blades used have undergone major improvements over time . Today, it’s possible to produce much more power from much less wind than ever before, and this is largely thanks to these improvements .
Mats made out of reeds were used as the blades for the first-generation wind turbines . While they did the job under the right conditions, they lacked durability . If the winds were too strong , these blades would often be broken .
Reed blades were eventually replaced by lighter and more reliable cloth sails . Along with an improved vertical axis style design, many early windmills utilized this type of blade in order to harness wind energy for grain processing purposes .
The next phase in the evolution of wind turbines came with the introduction of wooden blades and horizontal axis blade configurations . These blades were directly inspired by airplane blades . Wooden blades were sturdier yet lighter than earlier incarnations , and therefore they could rotate faster and provide greater power to the connected machinery .
These advancements made it possible to generate electricity with wind turbines . Larger wind turbines were soon built to take advantage of these advancements , providing energy in commercial settings .
From this period on, wind turbine blade development diverged into two distinct paths: horizontal axis blades, and vertical axis blades . In terms of horizontal axis blade design, the majority of the changes would manifest themselves as differences in blade shape and pitch, materials, and the number of blades used per rotor .
In most cases, 3-blade designs came to be used for horizontal axis wind turbines, as they have the best balance of stability and rotor speed . Modern turbines feature composite blades, which are both lightweight and strong . Composite blades allow wind turbines to spin faster and produce more power as well as pick up low-speed winds, making them immeasurably more efficient .
Some of the most spectacular and effective designs on the market currently can be found on vertical axis wind turbines . The rotation for these units is generally provided by features that take advantage of wind drag or wind lift .
Vertical axis turbines are able to harness the power of the wind no matter what way it happens to be blowing . In this regard , they offer a more consistent output of power than the majority of horizontal axis turbines . Residential users will find vertical axis turbines especially attractive , as they usually don’t require a tower or an open landscape in order to work their best .
If you would like to know the pros and cons of solar energy, take a look at Advantages and Disadvantages of Wind Power.
For the best guide I have found for building your own wind turbines with step by step videos, go to Best DIY Solar and Wind Guides.
For another guide to building a diy wind turbine, visit Homemade Wind Turbine.
wind turbine produces the 20kw wind turbine. Seems it also provided the 10kw and 17.5kw wind turbine. It provided the lattice tower and monopole tower.