Wind Energy. The Fossil Fuels That Once Were The Towering

For many, the mention of wind energy conjures images of giant white turbines, their blades slowly rotating, stretching off into the distance with no end in sight. This is how it has been portrayed in pictures, but this is not how wind energy truly looks. Photographs in books and magazines imply that wind energy would require these never ending fields. On the contrary, smaller fields where a limited amount of turbines create all the power needed and more for a city that is nearby, or smaller individual turbines creating enough energy for a home or neighborhood without being obtrusive, is how wind energy truly looks. Wind energy harnesses the power of the wind and converts it to other forms of energy, one of the main known forms being electricity.

What is a wind turbine? A wind turbine, is the process in which a turbine takes wind and produces clean energy(electricity) free from harmful gasses, to power this turbine wind is needed but how is wind obtained? What is wind? “Wind is a form of solar energy and is a result of the uneven heating of the atmosphere by the sun, the irregularities of the earth 's surface, and the rotation of the earth”(How Do Wind Turbines Work?). In other words wind is a renewable source such as solar energy. It 's produced when warm air rises to the atmosphere and later on is cooled down making it sink down, as warm air goes up cool air takes its place causing what we know as wind. Therefore the way a wind turbine will perform

In the society we live in today, many people have the misconception that there is a never-ending supply of energy available for our wasteful use. However, people must realize that the fossil fuels that we have come to depend on for our energy are quickly being depleted. There are several renewable energy resources, most of which come from the sun, that are available for our use. One of these abundant energy resources is the wind. By taking advantage of the wind, and harnessing its power to supply useful energy, people can ensure that they will have energy for as long as the sun continues to heat the earth.

We are facing an energy crisis on Earth. Burning fossil fuels are harming the atmosphere; this global warming and affects produces chemicals that hurt our body. People are starting to think about using alternative energy. Wind power would be our first choice, because it’s clean, inexhaustible and renewable. Today, wind power is mainly used in Europe. We believed wind power would be the main source of alternative energy for world use.

Wind Power can fulfil an significant amount of energy which is constantly needed for citizens in the 21st century as it is reliable when placed in the right conditions. The benefits of wind power include clean energy source, reliance, affordable and cost efficient which is why it should be used more commonly.

Scientists, nowadays, are concerned about the limitation of fossil fuels worldwide. It means some country whose electricity is most produced by fossil fuels may have the energy crisis in the future. However, other countries, use wind as an energy resource, not have to worry about the situation because wind power is infinite. What actually happens is sun’s heat causes the air to warm up in patches. In a result, some patches of air become warm while other patches remain cold. Hot air gets lighter in weight hence leaves it place and move towards upside, colder air patches are bit heavier there for their rushes to fill up the space that is left unoccupied by heated air, and this process generates wind. Because the sun will not be destroyed in a short time, we will have to wind for such a long time. Thus, wind power has infinite source supply (Solarpowernotes). The infinity of wind makes wind power a endless energy

Everyday we sit and work with our laptop, watch TV, play with tablets, use the coffee machine, use the lights, etc. Electrical appliances and devices exist today in very large numbers and will keep on growing at a very fast rate. In order to meet demands for electrical power, fossil fuels have been the main force of producing electricity ever since the industrial age. As effective as fossil fuel is, it will not last forever due to the fast rate of consumption and increasing electricity demand. As supplies of fossil fuel dwindle, it has become clear that renewable energy will become the primary source of global energy. Of all renewable energy sources that are available, wind energy stands at the top. We had use wind to do work for us

Wind energy is essentially the conversion of the kinetic energy from air molecules in motion to mechanical energy which is generally then converted into electrical energy. People have used wind power since 700 AD in

Wind turbines are a renewable energy they work by the wind turning the blade, the blade then turns a shaft inside the nacelle(the box at the top of the turbine), the shaft then goes into a gear box which increases the rotation speed, the generator then converts the rotational energy into electrical energy, the transformer then converts the electricity from around 700 volts to the right voltage for distribution which is usually 33,000 volts after all of these procedures, the national grid then transmits the powers around the country.

Wind turbine is a device that converts kinetic energy stored in wind to electrical energy using electrical generator. Before invention of electricity Windmill was used to convert energy of wind to rotational mechanical energy. In history we have seen many kind of drag and/or lift type of wind turbines. Currently mostly used wind turbines are three bladed Horizontal axis Wind turbine and Darrieus(or Egg-beater) type wind turbine. Majority of the modern wind turbine have can generate electrical power of 1.5 to 5MW [2]. We can define capacity factor as ratio of total wind energy extracted within a year to the total theoretical maximum power of a given wind turbine. Capacity factor depends on many factors but one on them is very low wind speed which is not enough to run a wind turbine. Wind speed increases at higher altitudes from the earth surface. Thus more energy can be extracted from the wind at high altitudes and in addition to that we have higher capacity factor because of more continuous winds. At 100m height estimated global wind power is about 230 TW [3]. We can get high amount of wind energy (80 GW as in [4].) at

A wind turbine turns wind into energy. As wind blows towards the blades of the turbine, the rotors spin around, capturing kinetic energy from the wind. The rotor blades are able to rotate around the hub (located at the front, middle of the turbine) allowing them to meet the wind at the best possible angle. Inside the nacelle (the main body of the turbine), the gearbox is able to convert the low-speed turning of the drive shaft into high-speed rotations that are fast enough to drive the generator proficiently. The generator then takes the kinetic energy from the spinning shaft and turns it into the electrical energy. With the help of anemometers that provide the measurements of wind direction and speed, the rotors and nacelle can be rotated by a yaw motor allowing the blades to face directly towards the oncoming wind, capturing the maximum amount of energy possible. The electrical current produced by the generator then flows through a cable running through the centre of the turbine tower. From there, a step-up transformer converts the electrical energy to a voltage about 50 times higher. The energy can then be transmitted efficiently to buildings and homes nearby or to the power grid.

Wind is a clean, powerful renewable energy source which can be used to convert the mechanical energy into electrical energy. Wind power uses large wind turbines rotated by air flow in turn rotates power generators to generate electricity. Many individual wind turbines can be connected to an electrical grid to transmit the power. Wind is an inexhaustible energy resource and environmental friendly compared to fossil fuel which has disastrous effects and finite [2].

Wind energy is also a popular alternative energy source that have been used for centuries. It was used to power ship and made it possible for explorers to sail long distant lands. Wind energy that can be used to power things are created with windmills, “a single windmill can power crop irrigation, and the family energy needs, water pumping and electric lights” according to Rinkesh

increased future ability to capture its energy, legitimizes the claim that using wind for power in

History of human use of wind energy can be traced back to BC. But for thousands of years, the slow development of wind energy technology, did not arouse enough attention. However, since the 1973 world oil crisis, in the conventional energy emergency and the deterioration of the ecological environment of the dual pressures of the global wind energy as part of a new energy has made great progress. Wind energy as a clean and renewable new energy has great potential for development, especially for the coastal islands, inaccessible remote mountainous areas, sparsely populated prairie pastures, as a reliable way to resolve production and life energy. Even in developed countries, wind energy as a clean and efficient new energy is producing more importance.