By: Jim Martin
Submitted: 2009-08-31 10:44:25 | Word Count: 791
Wind energy generator: An explanation
Among the various sources of renewable energy, wind is one of the most popular ones. The flow of wind that earth receives is determined by the uneven nature of the planet’s surface, the planetary rotations, the varying propensities of heat absorption at different atmospheric levels, and the planet’s varying vegetation types. Even the oceans and sea bodies can influence wind flows on earth. Motion energy is usually generated from the movement of the air. The former can then be harnessed to generate a mechanical power, called wind energy. A wind energy generator (like a wind turbine or a wind mill) is such a device that can actually process this energy of motion.
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Wind energy generators: Their technique of working
Wind mills and wind turbines are the two most often used wind energy generators that can generate electricity or mechanical energy. Electricity generation from wind energy is accomplished by wind turbines. Wind mills, alternatively, are used to produce mechanical power from wind resources. Actions like water pumping and corn grinding can be performed by using this mechanical energy. Wind turbines are, however, more popular devices, since they use the latest sophisticated techniques. An idea of the relative cost saving nature and efficiency levels of the two systems require a deeper study of these equipments.
How do wind turbines function? The turbines generally have a rotor, to which two (or, at times, three) blades are affixed. Then, the rotor with the blades is connected to the main shaft. The latter, when connected to a generator, can make it spin, thereby generating electrical power. Also, wind flows are less intermittent and have higher velocities at heights of around 30 meters (or, 100 feet). Hence, in order to obtain a sizeable output, a wind turbine needs to be set up at such heights. At the other end, we have wind mills, the performance and efficiency levels are determined by the number of their blades only. More energy can be obtained by a greater number of blades. A minimum of 15 miles per hour (mph) of wind velocity is required for satisfactory performance of the wind mills. Wind pumps and tjaskers are, in turn, two types of wind mills – classified on the basis of purpose they serve. People can benefit from the water that can be pumped out by wind pumps; it can also used for drinking by cattle. Again, for bringing out water from locations requiring low heads, drainage wind mills, like tjaskers, are used. The patterns of wind flow, unique requirements of an area as well as the final usage of the wind energy determines which of the wind energy generators are more efficient and involves less costs. Thus, a detailed study of the systems is called for.
It cannot be overlooked that wind energy is one of the fastest developing energy resources all over the world. Wind resources, unlike other conventional power plants, do not pollute the atmosphere. This factor is extremely advantageous, since the greenhouse gases that are released by the fossil fuel (like coal or natural gas) plants can cause acid rains that can adversely affect the different atmospheric levels. There are no chances of depletion in the stock of wind energy either. Nor are any costs need to be incurred for acquiring the wind resources for these systems. All these factors contribute to the great overall popularity of the wind energy generating plants. Economic advantages can also be obtained from the usage of these systems, since only a small fraction of the land taken on lease for installing wind energy systems are actually occupied by these units. Thus, farming can be carried on the rest of the land. Renting out this land area to the owners of the wind power units, by the farmers, is also common. The sites that suit the functioning of these systems ideally are located on rural ranch areas. Wind resources can be easily renewed as well.
The ever improving modern techniques are expected to eliminate any minor disadvantages that the wind energy systems might have. In the current, environmentally conscious and constantly developing world, wind energy is indeed a viable energy resource.
There are numerous finance related advantages of a wind energy generator. The latter positively affects the environment as well. Thus, you should ideally have such a system installed in your home. An instruction manual makes this job considerably easier. A manual would cover all the necessary topics, ranging from the steps to set up the system, the availability of free batteries and relatively cheap parts of the system, the wiring patterns of the latter, where the generator should be installed within the house for best results. Safety guidelines are also explained in detail in such a training manual too.
Author Resource:-
Jim Martin is a researcher, inventor, home energy consultant and author of the #1 best-selling e-book, "Earth 4 Electricity- Renewable Energy Made Easy”. To Learn More about Jim Martin´s Unique Step By Step Solar and Wind Power System Visit: http://www.windenergyatoz.com
