4. Introduction
Wind energy is an indirect way of obtaining solar
energy , since the winds are generated by the uneven
heating of the Earth's surface by the sun. Wind
energy is the energy of motion (kinetic) of air
currents circulating in the atmosphere.
5. The Winds
Sunlight warms the Earth
*different angles of incidence
Temperatures and pressure generate
winds .
* Cold fronts / warm fronts
High-pressure areas to low pressure areas .
Ecuador and Tropics warmer than the
poles .
8. Advantages
Clean energy;
Low maintenance cost;
Near the consumption sites (avoids transmission
losses);
Average length of turbine 20 years;
Easy removal ;
Abundant and inexhaustible .
9. Disadvantages
Interference in ecosystems (death of bats,
interference on the migration routes of birds) ;
Noise caused by the blades ;
Magnetic interference in telecommunications ;
Erosion on land .
10. How it works?
The wind turns a giant propeller connected to a
generator that produces electricity.
11. Conclusion
Wind energy fits perfectly into the current demand
for it is clean, renewable and does not cause major
effects on the environment. Therefore, there must be
investment in the countries, many, like Brazil, have
great potential and do not use it, because just
investing in no environmentally friendly sources.
