Nowadays every our move, action or inaction is the result of the various processing stations of primary energy to the secondary. All this for that in the morning we could make coffee, drive to work, watch TV, etc.
Conventional energy includes electricity, which tested by time and in a variety of conditions. The main part of world electricity is produced by conventional power plants. However, alternative energy has begun as a progressive way to produce, transmit and use energy. The importance of this wind energy in that cost-effective use and, as a rule, low level of harm to the environment. And this is not a joke! In recent years, many countries are expanding the use of wind turbines (windmills), sometimes called wind farms. For example, Denmark receives 25% of the energy from the wind.
Unlike electricity derived from fossil fuel-powered generating plants and nuclear power plants, wind power consumes no fuel and emits no air pollution in operation. Particularly, it reduces yearly emissions of nitrogen.
But there are also a number of problems caused by this type of energy.
Firstly, the economic aspects, as wind power is unregulated source of energy. Wind power depends on the strength of the wind - factor that can be really unpredictable. According to the issuance of electricity from wind turbines to the energy system differs with high unevenness.
There is also the environmental aspect. It consists of the fact that the wind turbines are removed part of the kinetic energy of moving air mass that leads to decreasing velocity of their movement. It’s able to make climate of the region more continental due to the fact that the slow-moving air masses have time to get very hot in summer and cold in winter. In this case, as described above the wind speed is decreasing because of the massive use of wind turbines can reduce the ventilation of the cities. And consequently, it leads to the increasing sickness rate of the population. These plants also produce a lot of noise and, therefore, the minimum distance from the plants to the houses not less than 300m. Wind turbines can harm not only people, but also birds. For example, according to the scientists, birds have a different structure of the lungs, and therefore less susceptible to sudden changes in pressure and suffer only from a direct collision with the blades of wind turbines. Also over 90% of bats that found near wind turbines had internal bleeding.
In general, despite all advantages of wind turbines we should remember about the danger that they lead.
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