from Wind Power
energy is the kinetic energy that is present in moving air.
The kinetic energy of the wind can be changed into other forms of
energy; such as mechanical energy or electrical.
Wind energy is a pollution-free,
infinitely sustainable form of energy. It doesn’t use fuel; it
doesn’t produce greenhouse gasses and it doesn’t produce toxic or
Earlier uses of wind energy can be found in the form of windmills
that were used to grind grains or pump water to irrigate
agricultural land. These types of windmills can still be found in
various parts of the world..
Modern uses of wind energy include generation of electricity through
wind energy machines called wind turbine generators, wind pumps or
Continuous wind energy spins the blades on a wind turbine to
generate energy. The blades of the turbine are attached to a hub
that is mounted on a turning shaft. The shaft may go through a gear
transmission box where the turning speed is increased. The
transmission is attached to a high speed shaft which turns a
generator that generates electricity.
amount of potential energy produced not only depends on wind speed
but also by the density of the air, which is determined by the air
temperature, barometric pressure and altitude. In any wind turbine,
the power and energy output increases dramatically as the wind speed
increases. Wind speed is also affected by the local terrain and
increases in height above the ground hence wind turbines are usually
mounted as high as possible.
Would you consider generating your own electricity from wind power?
Before considering installing a domestic wind turbine, it’s good to
consider the following points:
the initial cost of the wind turbine installation
amount of energy the wind turbine could produce
the wind at the potential site
Electricity generated at any one time by a wind turbine is highly
dependent on the speed and direction of the wind. The wind speed
itself is dependent on a number of factors such as location, height
of the turbine above ground level and nearby obstructions.
Wind energy is an ideal
renewable energy as it is pollution free, an infinitely sustainable
form of energy. It doesn’t create greenhouse gasses and it doesn’t
produce toxic or radioactive waste.
Ownership of wind
turbine generators by individuals or the community allows people to
participate directly in the preservation of our environment. Each
megawatt-hour of electricity generated by wind energy helps to
reduce 0.8 to 0.9 tonnes of greenhouse gas emissions that would
normally be produced by coal or diesel fuel each year.