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Comparing fossil fuels and renewable energy essay
Wind as a source of energy
Wind power as an alternative source of energy wikipedia
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Wind Power is the use of our natural wind that converts it into mechanical energy which eventually becomes electricity. You may not realize this, but we used wind power that dated centuries ago. It pumped water, ground grain, and plenty of other things. (Resources, awea.org)
Ever since recorded history, people had the ability to use wind as a source of energy. Wind power was been used to propel boats along rivers as early as 5000 B.C. At 200 B.C., China used windmills to pump water, while in Persia and the Middle East used vertical-axis windmills with woven reed sails were grinding grain. (history-wind-energy, energy.gov) Eventually, discoveries for wind energy became vast. Plethora of ideas developed. During the 11th century, the Middle Easterners used the windmills for food production. Which then allowed nomads, merchants, and crusaders to further bring back the idea back to Europe. The Dutch further improved the windmill by making it for draining lakes and marshes in rivers. Settlers took this advanced technology to the New World, and began using the windmills to pump water for farms and ranches and much more. Then eventually, to generate electricity, for homes and industries and soon to become, wind turbines.
In order to calculate such wind turbines, it depends on three main variables: the size of the turbine, the speed of the wind, and the efficiency of the turbine as well as the generator. The formula in order to calculate the wind power is: P=½ρAV³.
P = power in watts. ρ = The air density (1.2kg/m³ at sea level and 20° C)
A = The swept area of the turbine blades (m² square meters)
V = wind speed (meters per second) (Wind Turbine Kits and Supplies, windgenkits.com)
Let’s test this equation out. Let’s say we have a pretty n...
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...rgy. Texas is ranked 1st in state for the most MW (megawatts) installed, having over 7,772 turbines alone.
Did you know that China has the largest wind market size of any country? It was ranked 1 out of all the countries. China had around 67.7 gigawatts of wind capacity from its enormous installations. The U.S. was behind China, ranking at 2nd for having 60 gigawatts total wind power capacity.
Did you also know that Wind Power is actually Solar Power? Crazy right? The sun is also responsible for what we call “Wind Power.” (10 Incredible Wind Power Facts, science.howstuffworks.com)
You expect that these giant turbines would make loud noises? Well it’s totally the opposite. It’s actually surprisingly quiet. The noise impacts are regulated by municipalities as well as the Massachusetts Department of Environmental Protection (MassDEP). (Wind Energy: Facts, mass.gov)
With concern over global warming growing, people are starting to turn a more serious eye toward cleaner sources of energy. Instead of solar power making a comeback as the ideal form, we are seeing a growth in the use of wind power. Wind farms are beginning to crop up all around the country. This new trend has gathered significant attention. Questions are being raised concerning the effects wind farms may have, from critics and supporters alike. Michelle Nijhuis, in the article “Selling the Wind” discusses the arguments on behalf of and in opposition to the increasing use of wind power, addressing what the consequences may be on the United States.
Its most known process of generating electricity would be movement of air through wind turbines. Wind power has two parts, mechanical and electrical systems. Mechanical systems are low speed and are used for mechanical tasks such as pumping water or grinding grain. Electrical systems are high speed and are used to generate electricity to power homes or schools. Many people feel that wind farms full of turbines, are aesthetically unpleasing, but wind power is a clean energy source and does not generate greenhouse gas emissions. It is a very abundant resource throughout the United States. Wind power is simple, relatively cheap, and low maintenance (Sambu). Wind power is again, free and very abundant so no matter how much we use now, we will still obtain enough in the
"Solar & Wind Energy Calculations: The (very) Basics." Solar-estimate.org. Solar-Estimate, 2013. Web. 25 Nov. 2013.
Wind turbines can be very useful in bringing energy into your home. They are especially useful when solar panels aren't working. They take the wind speed from oceans, lakes, dugouts, or rivers and turn it into energy. To use the wind turbines most efficiently you should set up a wind power system.
Just as long as wind continues to blow and the sun shines, then wind power can produce energy to send to many different areas. There aren’t many locations that have continuous wind. And because of that, the widespread development of wind power isn’t as great as it could be. Although there are more advantages than disadvantages when it comes to this energy source, the disadvantages should be taken just as seriously. Wind power can harm animals, there was a study that stated birds were coming in contact with turbines and dying.
United States International Trade Commission (2009, June). Wind Turbine Industry and Trade Report. Retrieved, August 12, 2011 from http://www.usitc.gov/publications/332/ITS-2.pdf
The need for alternative energy is a pressing issue for countries all over the world. One of the solutions this for problem is wind power, which has been in use for many thousands years. “About 5000 years ago, the ancient Egyptians used wind to sail ships on the Nile River. Later, people built windmill to grind wheat and other grains. American colonists used windmill to pump water, and cut wood at sawmill. In 1920s, they started to use it to generate electricity.” (Renewable energy trends, 2005).
The average wind on the entire site is approximately 9m/s. Wind speeds of 7.5m/s are deemed economically viable. The wind speed can vary dramatically onsite. The wind speed was very low at 3m/s when we were there and we were told on our site visit that there have being wind speeds up to 50m/s experienced on the site. To prevent any damage the turbines cut out at a certain wind speed. This is typically 25m/s for the turbines on site.
Solar and wind energy are not consistent with producing energy if there is no sun or wind just like finding fuel is not consistent with electric vehicles because so little places have electric pumps.
Reading up information and searching for clues (which were not extremely easy), turns out to have broadened my knowledge on Nature and Biomimicry itself and that there are so many people already using wind turbines to harvest the winds energy and know how the world can be saved. Therefore I have come to the conclusion and have seen that my hypothesis has been proven right.
Wind turbines are a great source of energy around the world. Wind turbines produce wind energy that can be used to power our homes. Wind turbines convert kinetic energy into mechanical power. Then this mechanical power gets generated into electricity. Wind turbines make energy by the wind turning the large blades, which spin a shaft that is connected to the large blades, which then operates the generator making electricity.
Wind power is one of the most sustainable ways of generating electricity as no toxic emissions are produced; it does not add to global warming and is one of the most available sources of renewable energy and theoretically it is an infinite source of energy. On sufficiently windy areas, wind turbines are one of the most economical methods of generating electricity, which makes it appealing to many individuals, governments and organizations. Due to this it is the fastest growing source of electricity in the world (Union of Concerned Scientists, 2014) with a 10% increase in yearly additions installed in 2012 compared with 2011 (Global Wind Energy Council, 2012). However the proportion of energy that can be harnessed through wind power is restricted by the cost of the infrastructure needed, construction, the amount of wind that occurs and that there are only a narrow number of sites within the UK that are windy enough for the wind turbines to be worth installing.
Wind is a form of solar energy. The term wind energy describes the process by which the wind is used to generate electricity or mechanical power. Wind turbines convert mechanical energy from the wind into electrical power. Wind turbines usually have three main parts. There are blades that connect to a central hub, a box behind the blades that contains the generator, and a long stem that connects to the ground. The way how it works is that the wind turns the blades, which spins a shaft that connects to a generator making electricity. After the electricity is produced it is sent through transmission lines to a substation that is sent to business and homes. For the sake of our planet, we must promote a renewable energy economy. Wind power can be a foundation of that sustainable energy future because it provides jobs in states that are building wind turbines, is a renewable energy source, and does not damage our environment. The environment will not be damaged by the pollution, the natural resources will not be used up, and there won’t be generating of hazardous wastes. Welcoming wind energy today will lay the foundation for a healthy tomorrow that will affect everyone in the United States. There are obstacles and challenges that will make it more difficult, but the environmental impact is well worth it to invest more money into wind energy.
The Wind Turbine is a device that converts the kinetic energy of the wind into kinetic energy of turbines. The turbines turn to generate electricity but they work only when there is wind. The efficiency is 30-40%. The environmental impacts are needs many large turbines to generate electricity which can be noisy and unsightly. Turbines may endanger birds and bats.
Deal, W. (n.d.). Wind power: An emerging energy resource.Technology & Engineering Teacher, 70(1), 9-15. Retrieved from http://web.b.ebscohost.com/ehost/detail?sid=a747d6c4-9f9f-4066-be3e-d7d26a427ef2@sessionmgr115&vid=1&hid=114&bdata=JkF1dGhUeXBlPWNvb2tpZSxpcCxjcGlkJmN1c3RpZD1zc2Mmc2l0ZT1laG9zdC1saXZlJnNjb3BlPXNpdGU=