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Wind Turbines - Low cost power from mother nature. Perhaps we could implement it as part of our alternative energy strategy

Wind turbines are one of the most reliable kinds of renewable energy sources in the world. Wind turbines are designed to generate power by transforming the kinetic energy of the wind into mechanical energy, which is then either used directly (in the case of windmills, for example, which were used to transform wheat into flour, or to pump water for irrigation) or coupled to an electrical generator that provides a DC electrical output that can be used in a more general sense. In this commentary we will be talking about the type of wind turbines that produce electrical energy, as this is more useful to us.Wind turbines are basically large windmills, with big blades that spin as a result of the wind and produce power by converting the winds force. Wind turbines are constructed from plastic, copper, carbon fiber along with many other exotic metals.Wind generators can have several pronounced negative impacts on the environment. They are quite visible, and very unsightly since they must be located in proximity to windy, open terrain to be economical - attempts to position them off the coast have been greeted with great success. Wind Turbines require energy in their production, energy which is fossil-based, and therefore it can take a considerable amount of time before they are positive in terms of total carbon emissions - this timeframe can be anywhere from 3 to five years. Turbines are often associated with the slaughter of birds that can be mutilated as they pass between the turbine blades during transitory passages.With all of the detractors aside, wind turbines should be a inclusion when talking about a broad strategy for renewable power, in those areas that are well suited to them. Once constructed, wind turbines are highly efficient in a larger sense - they generate electricity from a natural, eco-friendly renewable resource, without the social or environmental penalties that we incur with the consumption of fossil fuels - theres no need to mine for fuel or to transport it - there arent any byproducts created, and no need to contain, process, or to eliminate wastes.At the small side of the scale, turbines can be as small as five feet in diameter and are capable of only a few hundred watts of output. On the high end of the scale, turbines can be as huge as two hundred and fifty feet in diameter and may be capable of generating 2 to 5 megawatts of power.Like with photovoltaic solar power generation, there might be incentives available to induce construction, and excess energy can be sold back to the grid.Wind velocity is affected by terrain and increases with height above the ground, so wind turbines are usually mounted on large towers. For a typical installation, the wind turbine sits on top of a tall tower and generates low voltage DC that is used to charge batteries - this stored power is ultimately utilized by routing it through an inverter which transforms the low voltage direct current power into utility voltage AC energy for use in household applications. By positioning a lot of turbines into wind farms a massive amount of electricity can be stored and harnessed, perhaps for a whole city or town.Because the wind does not blow all of the time in most areas, wind turbines are used in hybrid configurations with many different technologies like photovoltaic panels, and diesel generators to generate a constant source of energy.Contrary to fossil-fuel power stations, wind generators are clean - they dont manufacture the CO2 emissions that are causing global warming or the sulfur dioxide emissions that cause acid rain. Modern day wind turbines are divided into 2 categories, namely horizontal axis turbines and vertica turbines. Todays horizontal axis wind turbines are actually far superior at capturing the wind than vertical axis turbines given the same amount of swept blade area (i.e. the diameter of the circle traced by the tip of the rotor blades).

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Peter is a regular contributing copywriter to Fuzing.com. This viewpoint is brought to you in conjunction with trade leads from the Solar Power area of our Business to Business portal.

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