Wind Energy Today

Introduction to Wind Energy Today

The motion of air along the surface of the surface is called wind. A wind with velocity of 3m/s to 5m/s is weak and can only shake the smaller branches of a tree while a wind with a velocity of 13m/s to 15m/s is strong and able to affect a person while he is walking.

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Description about wind energy today


Atmospheric air is almost in state of fast continuous motion. Air moves from the regions of higher pressure to those where the air pressure is lower this pressure difference can arise due to different regions.  For example, sea breeze appears do to non uniform heating of the ground and water by solar radiation as well as due to the different rate of cooling at night. On a summer day, a sea beach is heated to a larger extent than the sea surface.  The winds blowing in summer in one direction and in winter in the opposite direction are generated similarly.  Solar energy is one of the main factors responsible for the movement of air in the atmosphere.


Wind energy farm today


The electric power output of a single wind mill is quite small and cannot be used for commercial purpose.  Therefore, a large number of wind mills are erected over a large area.  A cluster of wind mills is called a wind energy farm.  The main requirements for wind farm are a site where the mill blows constantly and from a consistent direction, such as a mountain passes, of shores locations and island.

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Merits of wind energy today


1.    It is a non-polluting and environmental friendly source of energy.

2.    It is an important renewable and sustainable source of energy.

3.    The generation period is low and the power generation starts immediately after commissioning of the windmill.

4.    Power generation is a cheaper as there is no shorter of input. The recurring expenses are almost nil.