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Wind Energy

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Rachel C

on 24 February 2013

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Transcript of Wind Energy

Everything To Know About Wind Energy Wind Energy By Rachel Corry 5th period What is Wind? To understand wind you must first understand that the sun heats the earth differently based on how it hits the earth. This makes hot and cold air, which in turn creates high and low pressure systems. Hot air rises and cold air falls and fills in the place where the hot air was. When they are moving it creates the movement of air, also known as wind. Wind Energy Wind energy is how we actually harness the energy that comes from the wind in motion. We do this with two basic components; a generator and wind. Together this creates a wind turbine. Generator A generator is a machine that transforms mechanical energy into electrical energy. When the main shaft spins it turns an electromagnet with it and creates a magnetic field around it because it is surrounded by magnets with opposite poles. This turns on the electromagnet and creates electricity! This video will help explain it in relation to a motor. Wind Turbine A wind turbine uses the technology from the generator and has wind do the work for us. Like in the video a propeller is connected to the machine and when it turns it creates electrical energy. This will only create a small amount of energy so a wind farm with enormous windmills are created to power our homes. How does it get to our homes? Nuclear When the sun undergoes Nuclear fusion it creates heat and energy. Thermal The sun heats the earth in different spots and creates hot and cold air. Mechanical When the air moves it creates wind. Mechanical The wind turns the propellers in the wind turbine and starts the generator. Electrical The generator creates electricity. Mechanical The electricity moves from the wind turbines through wires and power lines and eventually gets to our home. This is a picture of an average sized wind farm. This is how the sun heats the earth and creates different temperatures in the air. This is the basics of how a wind turbine works. The Negative Side of Wind Energy Positive Side of Wind Energy Wind energy, even though it is expensive, would eventually pay us back. This is because right now we are paying for nonrenewable energy sources. They can be used once, and once they are used up we need to go get some more. Wind turbines can reuse wind over and over again because it isn't actually taking the wind. It is just using it to power the generator then letting the wind go by. We pay for the turbine once then we never have to pay for it again (other than maintenance). These are two graphs showing how just over a year each company who payed to buy wind turbines payed significantly less the next year. Continued Positives I believe that wind energy is the most renewable of the renewable energy sources. This is because wind will never run out. As long as we have the technology for it, wind will always blow and we don't even take the wind, we just let it pass by unharmed, after it pushes the turbine. Why Would I Choose Wind Energy? Well I have always seen wind turbines on my family trips all over the country. I never really understood what they were and how on earth turning blades made electricity. I decided that if I was going to research some type of energy it would definitely be wind energy so I can solve my long term childhood mystery. Continued Explanation of Why I Choose Wind Also After doing a little bit of research on wind energy I found it more intriguing than the others. I wanted to research it more. This is because it was such a simple way to create a large amount of energy. Also I chose it because it was the most renewable energy source, I thought out of all of the other sources. It doesn't waste wind and it also doesn't harm the earth. Wind Energy Is the BEST! Are you looking for a clean way to get electricity to your home? Then I have a source for you! Wind energy is completely environmentally friendly and also produces a lot of energy. It is renewable and a complete combination of modern technology and the need for clean energy. It doesn't waste wind. It is an extremely simple way to get energy but works as well as any other energy source, if not better.You put this all together and what do you get? The best renewable energy source in the world today. So call 1-800-LUV-WIND so you can say that you have the best energy source in the world. This website further explains nuclear fusion in comparison to nuclear fission: http://www.diffen.com/difference/Nuclear_Fission_vs_Nuclear_Fusion Wind energy can cost a lot of money. It takes a lot of money to build a huge wind turbine. That is one of the main financial problems plus it also costs money to buy a large enough space to put a wind farm. The wind turbines also can harm animals. Passing birds have been killed from the blades spinning so fast. The biggest problem I think though is that wind energy is not always reliable. No matter where you go, there will not constantly be strong enough wind to turn the propellers, if there is any wind. Sure there are places where wind blows more constantly than others, but it doesn't go on forever. Wind can not be stored to use for a later time when you need the energy. If you want to store energy you need to use a battery and that adds onto the cost of wind energy. You have a lot of flexibility on how you want your turbine if you want one for your home. You can choose how big you want the turbine to be, where you want it and anything else you could pretty much customize to your satisfaction. In the country there are places not connected to the grid. In this case wind turbines can provide them with enough power to power their homes. Lastly it is amazing because it has no environmental harm. The generator does not give off any green house gasses or pollutants, so it is completely harmless. Bibliography: "Wind Energy Basics." Wind Energy Basics. N.p., n.d. Web. 22 Feb. 2013. <http://windeis.anl.gov/guide/basics/index.cfm>. "Positive & Negative Facts About Wind Energy | National Geographic." Green Living on National Geographic. N.p., n.d. Web. 22 Feb. 2013. <http://greenliving.nationalgeographic.com/positive-negative-wind-energy-2715.html>. "Nuclear Fission vs Nuclear Fusion." - Difference and Comparison. N.p., n.d. Web. 22 Feb. 2013. <http://www.diffen.com/difference/Nuclear_Fission_vs_Nuclear_Fusion>. "Advantages and Disadvantages of Wind Power." Advantages and Disadvantages of Wind Power. N.p., n.d. Web. 22 Feb. 2013. <http://www.technologystudent.com/energy1/wind8.htm>.
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