Do You Know How Windmills Work?

You're reading Do You Know How Windmills Work?, posted on Wednesday, May 26th, 2010 at 2:42 am in Uncategorized, on BrainBloggers at the Science blog. More after the jump.

A windmill is a machine which utilizes the energy from the wind to produce other kinds of useful energy such as electricity. They are also widely referred to as wind turbines particularly when mentioning the kinds that are used to generate electricity. When it comes to generating power, windmills are viewed as extremely dependable and efficient. A windmill is made up of a set of sails that are attached to a central axis that is made to rotate when it comes in contact with wind.

Windmills emerged from the need for stae-of-the-art and environmentally friendly means of exploiting energy. They have been in existence from around the fifth century AD where they were being developed in Persia. The first types were used as grinding mills but they have advanced tremendously over the years. The uses of windmills and the variety of styles continue to change along with time and technology. This is obvious when you look at how they were operated compared to how they are maneuvered now. They once required the attention of somebody constantly in order for them to function effectively. Today, windmills are operated by computers.

The utilization of windmills has widened to various countries as it is inexpensive and it produces energy without discharging green house gases. Windmills use free energy to create another type of energy and that has caused the use of windmills to become established and common. They are also very appealing and in some countries they are seen as an attraction. In Holland and Spain for example, windmills form a part of their attraction. They have a wide range of uses, some of which are:

1.Water pumping

2.Grain grinding

3.Generating electricity

How Do Windmills Work

The total power that is produced by a windmill is dependent on several aspects. First of all, its size is a chief factor. The bigger the blades are and the more blades included on the axis causes the production of more energy. Secondly, its position or location. Windmills work suitably in flat areas and they have to be used where there is wind to drive the sails. Lastly, the number of windmills that are used to generate power is important. The more windmills used, the more power will be produced. On the other hand, a single windmill can generate a considerable amount of energy.

A wind mill is comprised of various parts in order to efficiently create energy. There are blades which are responsible for most of the work. These blades are attached to a body consisting of a very long tower. The height of the tower is necessary to the total functioning of the because it elevates the sails at higher elevation for increased access to wind. It is very important that a windmill is launched on a very strong and sturdy pole or tower as the stronger and taller they are, the better they operate. Windmills are defined depending on the kind of axis that they have. The most popular type is the horizontal axis which has three sails. The other type is those that have a vertical axis looking like an egg beater. This model has an advantage of operating efficiently even when it is not facing the wind.

How a windmill works is simple. The sails are very important in the production of energy because they do most of the work. The blades automatically revolve when they come into contact with wind. This movement that is created in sequence creates energy which is then transmitted from the sails through the shaft and then to the generator. When it reaches the generator, it changes the energy into electricity which has a benefit over other methods of electricity generation since it is pollution free.