“Today, wind energy is very popular in the U.S, Spain, Denmark, and India. It is mostly used in Germany.”“Wind power promises a clean and free source of electricity that would reduce our dependence on imported fossil fuels and the output of greenhouse gases and other pollution”. That is why wind is one of important source of non-conventional energy. It is very cheap, pollution-free and environmental friendly . “Since wind depends on sun, it is a form of solar energy. As long as the sun shines, there can be wind power, making it unlimited. It is safe for the environment and does not produce any atmospheric emission nor greenhouse gases.” It is called renewable energy because wind will continually be produced as long as the sun shines on the earth. Using wind to create electricity has been around for a long time. Probably anyone had seen windmills on farms. But, windmill on farm can make only small amount of electricity. Wind farms are built in flat, open areas where wind blows at least 14 miles per hour. “To capture this wind, turbines are used to convert the renewable resource into electricity. The kinetic energy is then mechanically processed”. “Fundamentals of wind power technology are rotor, nacelle and tower. The blades are made of aluminum with wooden blades are carved to form an aerodynamic propeller similar in cross-section to an airplane wing. At its simplest, the wind turns the turbine’s blades. These blades then will spin shaft that is connected to a generator that makes electricity. Large turbines can be grouped together to form a wind power plant, which feeds power to the electrical transmission system” . “Power is available from the kinetic energy of the mass of air moving in wind. The amount of energy that wind carries increases by a factor of two as its speed increases and is proportional to the mass of air that passes through the plane of the area swept by the rotors. As power is the product of energy (work) within a given time frame, the power of wind increases by a factor of three as the speed of wind increases. Because of the low density of air (Pair=1.25 kg / m3), the power density of wind is much lower than that of water power (Pwater=1000 kg / m3), for instance. The power that can be harvested from wind is calculated in terms of the swept area -- for a horizontal axis wind turbine (HAWT), the area through which the rotor blades pass. As a result, if the diameter of the rotor blades is doubled, the power increases by a factor of four. The power will increase by a factor of eight when the wind speed doubles” . Why must wind power? Because it is low cost. It can be competitive with nuclear, coal and gas on a level playing field. The wind is free and with modern technology it can be captured efficiently. Also, any agricultural or industrial activities can continue around it. It will not cause any carbon dioxide, greenhouse gases or any pollutants to atmosphere. Area which is not connected to the electricity power grid can use wind turbines to produce their own supply of electricity. It provides a hedge against fuel price volatility. Wind power is very dependable because it does not rely on imported fuels. Wind power provides bulk power equivalent to conventional sources (REH). “The increasing numbers of wind turbines dot the world’s landscape. Wind farm become common place in many countries such as the Unitd States, Canada, and Australia also in countries in Europe”. Many people find wind farms are an interesting feature of the landscape. In addition, wind power technology industry can provide a job to the community. But, on the other hand, wind power technologies also have the bad side too. As an example, because of inconsistency of the wind strength, wind turbine does not produce the same amount of energy all the time. There will be times when they produce no electricity at all. Also, wind turbines are noisy. “Each one can generate the same level of noise as a family…
fell apart. I am not certain I have all the answers on how to sustain a better way of living than our ancestors, but I do hold, a theory of a solution that feels as if it cannot fail. Unity is the key. Countries who felt separated, who fought for power over other countries, over people, over land and even over oceans, ruined our past. None of this belongs to anyone. This was their ultimate doom. If we unite in such a way that we rely and depend on one another for a society of peace, respect for all…
and deforestation, which can ultimately destroy an ecosystem. “For example, deforestation has belatedly revealed the critical role forests serve in regulating the water cycle -- in particular, in mitigating floods, droughts, the erosive forces of wind and rain, and silting of dams and irrigation canals” (Daily et al. 1997 p. 2). Therefore, with growing populations ecosystems will continue to suffer. The resilience of population growth is fairly difficult because population control is extremely…
Leah Guilefuss Wind Power Letter
Dear Senator of New York,
I’m writing this letter to because I think wind power is something that could potentially, save our state as a whole. Let me start off in explaining what wind power is its an alternative form of energy that now provides electricity to many other states in the United States. I really think having wind power can save a lot of people money.
Reasons why we should use wind power to provide electricity to homes and other…
What is wind power ?
Wind power is when air moves causing wind to be converted into a more using form of energy, it is also a form of solar as a result of the uneven atmosphere that’s created by the sun. Wind power Is a clean and renewable source of energy and is one of the long term components of the energy strategy. In eradicating sources that cause pollution weather they are renewable or not.
(B)How wind electricity is made using wind power
to this group. Save the group.
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The Economics Of Wind Power In America
Wind power currently serves about 0.1 percent of the entire electrical demand of the world today. There are several sources of energy that society uses today and the most prevalent source used is coal power. The need for a stronger, renewable, energy source is necessary as the consequences of the use of coal and other nonrenewable sources become more obvious. However, the costs of changing our energy resource is substantial and the reliability of these energies…
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Wind Power’s Present and Potential
As the global supply of fossil fuels becomes steadily lower, need is growing for new
energy sources that are beneficial to the environment and cost-effective. Wind power is
one solution to this need. Wind turbines require significant investment, but are costefficient in the long term. If construction of turbines is sufficiently increased, the wind
may be able to in the future provide a very major portion of global energy.
Wind Power’s Present…
prehistoric plants and animals.”
Electricity is very commonly used in my house hold. With microwaves, televisions, radios, waffle irons, crockpots and toasters being used on a consistent basis. Electricity also powers our light bulbs, air conditioners and humidifiers. The great power of electricity! It surrounds us and can be used in thousands of different ways. Electricity is a secondary energy source, and according to www.energy4me “Secondary Energy is energy that is converted from primary sources…
of ancient sunlight. The problem with these alternate energy sources is the initial investment to acquire and install these devices.
The first device of the 3 main alternate energy sources is the solar panel, used to acquire solar energy. Solar power is a great choice to reduce a home’s dependency on fossil fuels, it is surprisingly the most affordable of the three main energy devices and also the most flexible as it can be used in almost any terrain as long as the sun can reach it, it will work…