Essay on Wind - A Renewable Energy Source
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Wind - A Renewable Energy Source
Wind is called a renewable energy source because wind will continually be produced as long as the sun shines on the earth. The sun’s contribution to wind energy deals with converting air into heat or cool wind. Wind is produced by the irregular heating of the earth’s surface by the sun. On land, the warm air spreads and goes up in the sky, in the water, heavier and cooler air moves in to take the warm air’s place, thus providing local winds. This power source should be used more often in the United States for its safer standards regarding the environment and finance.
To capture this wind, turbines are used to convert the renewable resource into electricity. The energy in motion or…show more content…
Therefore, similar to the rest of the types of power, wind is not nearly perfected to utilization.
Besides the sight of windmills looks as if it is sticking out like a sore thumb, wind turbines cause animal deaths and noise pollution to plants. “Some news has been reported there are birds fatalities do to flying through the windmills” (www.awea.org). Imagine the sight when a pigeon flies through a rotating shaft made out of blades. Pretty disgusting; birds had it on them for using the bathroom and flushing their feces on top of our cars.
Wind energy is an environment friendly resource the United States should use more than fossil fuels. Do to the fact that coal and wind has the same electricity efficiency; wind should prevail because it doesn’t produce polluting gases such as carbon dioxide. Regardless of the bird fatalities, wind energy is much more animal beneficial than fossil fuels given that such power sources as coal, it is much more injurious do to the fact that it has been inhaled by many beings which causes harmful and most of the time deaths. Let’s use a cleaner source that we can depend on; wind energy.
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One of the most debated issues in today’s world is that of energy sources to power an increasing global demand. Traditionally, humans have converted energy from natural resources like coal and natural gas for use. However, these sources of energy are both nonrenewable and cause large amounts of pollution. As we progress through the 21st century, renewable energy sources like solar and wind energy will see increased use to replace traditional sources. One of these sources, wind energy, is seeing a rise in development because it is a source of renewable energy that is both sustainable and poses minimal costs to the environment.
Wind power has been around for many centuries, and has steadily developed over the last 100 years. The first major usage of wind power in the United States was between 1870-1930 when farmers used wind energy to pump water (Union of Concerned Scientists, 2009.) Modern wind turbines, although more advanced and complicated than their predecessors, operate in the same manner. Air particles moving in the form of wind create kinetic energy, which is captured by the turbines (Layton, 2011.) The wind hits the blades of each turbine, which due to their unevenness in size, begin to spin around the center of a turbine.
The turbine is instructed to face the direction of the wind source at all times by a small computer located at its center, which interprets weather data (U.S. Dept. of Energy, 2011.) The blades, connected to a shaft inside the turbine, begin to spin the shaft, which in turn shifts various gears at high speed revolutions, generating the electricity. Most wind turbines are very tall in order to capture greater wind speed.
Wind power is measured in GW, and it’s production of electricity in GWh. The conversion of wind energy into wind power follows the 1st Law of Thermodynamics, as energy is neither created nor destroyed in this process. Kinetic energy from the wind source is simply converted to electricity via the operation of the turbine. The 2nd Law of Thermodynamics shows that energy will move from a more concentrated state to a state of greater entropy. In the case of wind turbines, wind energy is transferred from a concentrated state to the system, and converted to electricity. An example of a wind turbine farm in America is the Fowler Ridge Wind Farm, located near Lafayette, IN, which currently consists of over 300 turbines and has a capacity of approximately 600 MW. The project is still developing to become even larger.
Wind turbines are becoming increasingly popular because not only is wind energy inexhaustible, but also energy derived from wind power has few negative environmental effects. Unlike fossil fuel energy systems, minimal pollution is emitted from the transfer of wind energy, and the primary complaint with turbine farms is that they are large and unattractive, and may present a confusing problem for migrating birds. Wind power is also economical, averaging a cost of only 4 cents/kWh in 2008 (Union, 2009.) In 2008, the United States saw wind power reach upwards of 25,000 MW, enough to power over 6 million homes in the country. Globally, over 120,000 MW of wind energy were delivered in 2008 (Union, 2009.)
Growing concerns over the environment’s health and the prices/exhaustion of nonrenewable energy sources will lead to an increase in wind power in the future. It has been projected that by 2013, global wind power capacity will reach nearly 332 GW – nearly triple its current size (Union, 2009.) Overall, wind power is a rapidly developing source of renewable energy that is viable because it is both sustainable and poses few environmental costs.
Kinetic Energy (W)
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