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Wind energy


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Air in Motion. Wind energy is the transformation of the kinetic energy of the wind into mechanical or electrical energy that can be harnessed for practical use

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Wind energy

  1. 1. MODERN TECHNOLOGY  New urban rooftop windmills are new windmills with a smaller and quieter design. These windmills are designed to be more efficient with wind patterns occurring in cities. They are able to turn at wind speeds as low as 8 mph What is Wind Energy? Wind energy is the transformation of the kinetic energy of the wind into mechanical or electrical energy that can be harnessed for practical use
  3. 3. EARLY HISTORY/INVENTORS & INNOVATORS  The first recording of a windmill came from a Hindu book dating back to about 400 B.C.E.  Scientists believe that the first windmills created to do work were created in China 2000 years ago. There is no written history of this however.  The first recorded windmills that were created to do work are from seventh-century Persia.  The first historical reference to Chinese windmills was in 1219. This is significant because during this time windmills were used along the coast of china for wind power  Some windmills are still intact in Iran and Afghanistan from the 7th century  These windmills are reverse of the windmills today however, wind energy went into a chamber to turn blades, while today the blades are on an external axis  The y are still around today and can grind about a ton of grain per day
  4. 4. ELECTRIFICATION  Until the late nineteenth century windmills would only produce mechanical power for their tasks such as grinding grain or pumping water.  With the creation of electricity, windmill makers found that windmills could be attached to a generator and used to create power for heating and lighting.  The first windmill used to produce electric energy was created in 1888 by Charles F. Brush.  These windmills needed to produce 500 revolution per minute in order to power a generator.
  5. 5.  Wind is Free, and the power it generates has been harnessed for centuries  Wind is a completely renewable resource because it is something that occurs naturally, once the means are there; technologically and practically, it can be harnessed constantly without destructive effects (emissions and use of resources) to our abused planet.  Generation and maintenance costs for turbines have decreased significantly in recent years  Wind power is well suited to rural areas PROS OF WIND ENERGY
  6. 6. CONS OF WIND There are many obstacles to optimal use of Wind Power Transmission- How to get energy from point A to point B Technology- Means storage and containment of power must be developed  Weather- Wind power is highly subjective not only to location but also to climate, time of year, and currents/weather patterns For many problems new tower designs provide an answer  Noise and view disruption become an issue with communities near wind farms  Endangered birds can be killed by flying too close to wind turbines
  7. 7. HOW WIND ENERGY AFFECTS US TODAY As of today wind energy is best fit to be used as an alternative source of energy but as costs go down and effectiveness goes up this could soon change, and wind energy may become a viable option the leading source powering the future. Placement is key in using wind farms and windmills, because if the money is to be spent to create one, optimal effectiveness will need to be assured.
  8. 8. SOURCE CITATIONS "Wind Energy." Alternative Energy. Ed. Neil Schlager and Jayne Weisblatt. Vol. 3: Water Energy, Wind Energy, Energy Conservation and Efficiency, Possible Future Energy Sources. Detroit: UXL, 2006. 305-336. Gale Virtual Reference Library. Web. 2 Mar. 2010.. S. Heier, Grid Integration of Wind Energy Conversion Systems, Wiley, Chichester, 1998 D. A. Spera (ed.), Wind Turbine Technology, ASME Press, New York, 1994 S. Wagner, R. Bareiss, and G. Guidati, Wind Turbine Noise, Springer, Berlin, 1996 J. F. Walker and N. Jenkins, Wind Energy Technology, Wiley, Chichester, 1997 Gary Thomann, "Wind power", in AccessScience@McGraw-Hill,, DOI 10.1036/1097-8542.746400