Wind Energy

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Environmental Science

Wind Energy

Online essay help on Wind Energy

Wind Energy has become the fastest growing energy source in the present time. It is created by the use of wind, an unlimited resource on the Earth. Wind is created by circulation patterns in Earth's atmosphere caused by heat from the sun. It is harnessed by specially designed wind turbines to create electricity, or it aids in propelling objects such as boats through their use of sails.

How electricity is created by a wind turbine is relatively simple. As atmospheric winds flow past the rotor of a wind turbine, the rotor spins and drives the shaft of an electric generator. The generator then produces electricity for people to utilize. As long as wind is present, electricity may always be generated for the benefit of mankind.

Many differences are present between obtaining wind energy and obtaining hydroelectric energy. Wind energy is available throughout the entire world, while hydropower is limited to certain areas. Also, in obtaining wind energy, a larger rotor is necessary in order to produce the same amount of electricity that a hydro turbine rotor accomplishes. This is due to the fact that the air that drives the rotor is much less dense than the water that drives a hydro turbine rotor.

In order to create a wind turbine, these parts are necessary

1. Rotor-used to convert the wind's energy into conventional shaft energy

. A Nacelle containing a drive train, most likely containing a gearbox

. Tower-supports rotor and drive train

4. Electronic equipment such as controls, electrical cables, ground support equipment, and interconnection equipment.

At the moment, wind energy is a new and upcoming energy source which has the potential of providing at least twenty percent of a system's electricity. It currently provides greater than twenty percent of Energia Hydroelectria de Navarra's electricity and has the potential to create even more. As of now, utility scale wind turbines throughout the world have the capacity to produce 17,000 megawatts of generating capacity. By the year 017, wind could provide ten percent of the world's electricity supply, assisting over 500 million households and reducing our need for the consumption of fossil fuels.

The best part about the harvesting of wind energy seems to be that it basically causes no harm to the environment. By reducing the burning of coal and other fossil fuels, the overall health and happiness of the world can be instilled. Maladies such as asthma, other respiratory illnesses, nuclear waste, water pollution, acid rain, and the greenhouse effect could be eliminated with the full implementation of wind energy.

It sounds just too good to be true now, doesn't it? Well, one issue is yet to be resolved in the case of transporting the produced electricity. Utility Transmission lines, which carry the created electricity from windy sparsely populated areas to bigger cities are apparently too costly and difficult to install at the moment. Hopefully, ways to overcome this problem will be developed to institute a safe and easy way to produce electricity in the future.

Source

American Wind Energy Association "Wind Energy, How Does It Work?" Fact Sheet http//www.awea.org

Multiple Choice Questions

1. Wind Energy is created by a machine called a

A. Turbine Generator

B. Wind Turbine

C. Electricity Converter

D. None of the above

. Wind is caused by

A. Circulation patterns in the atmosphere due to gravity

B. Circulation patterns in the atmosphere due to the cosmos

C. Circulation patterns in the atmosphere due to heat

D. None of the above

. The sole con of Wind Energy is

A. too difficult to transport the electricity

B. Not enough energy is produced by the wind.

C. both a and b

D. none of the above

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