Wind is one of the natural phenomena on the surface of the
earth that we process on a daily basis, Valrih is the movement of air in the
atmosphere in a certain direction and certain speed, depending on wind
direction and movement air and move from place to place on a horizontal surface
of the earth on the pressure difference between the two locations, Vtaathrk
wind to low pressure, and the speed depends on the amount of pressure between
the two points. Factors Tather wind movement of the sun as the source of
pressure differences and wind energy are solar energy reaching the surface of
the Earth, as the amount of one percent of Achammsh dash of energy the surface
of the earth in a wind energy in different ways, as the amount of heat the
different regions on the surface of the Earth varies great even lower as we
move towards the poles and the approach of increasing the equator because of
the difference in the fall of this radiation angle, because this difference
leads to cooler air at the poles and the density and pressure and high
temperature at the equator and low density and the pressure and consequently
the air moves from the poles to the equator.
Specific heat of the earth and water there are variations in
the warm air between the sea and in the oceans and the earth because of the
specific heat between the earth and the change of water, winds Vtaathrk Ocean
warming up the earth and quick unloading from the sun to heat as a result of
the earth over the water which reduces the intensity of the air pressure on
land Ntihh degree temperature the air around the seas, and the contrast between
the heating valleys and mountains and so the mountains, temperatures during the
day, leading to the displacement of wind from the valleys and mountains during
the day, and reverse occurs during the night, in addition to the rotation of
the Earth on itself, which has a great role in determining the direction of
movement of the wind. The use of human use wind power from the old wind power
in many areas, it is months wind energy use is pushing sailboats and grind
grain in windmills, which had turned into energy for rotating mechanical mills,
pumps and winds that were used to pump water as well. After Almtadh uses fossil
fuels discovery and the discovery of the disadvantages incurred by him, for
fear of dry resist, too, the world has become interested in wind power is
greater than before so as to generate electricity using wind energy, are
generating electricity from wind using turbines, was the first time the
conversion of wind energy into electrical energy in Scotland in 1887, but the
present invention can cost n ' has failed, but scientists later development on
an ongoing basis to the various means for the exploitation of wind energy until
I wind was generated by the turbine is sufficient to generate electricity for
cities of all, are put air turbine sectors where the wind speed is high to be
and that there are different shapes and sizes depending on their purpose, and
is connected electricity generators When driven turbine fans moving the
generator related to generate electricity, there is in the world a number of
wind farms, which generate thousands of megawatts as in China, United States of
America.
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