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Hydroelectricity by yatharth kochhar
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Hydroelectricity by yatharth kochhar

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  • 1. hydoelectricity MAde By : yAthArth kochhAr clASS : X “A”
  • 2. Which iS the BeSt SoUrce oF eNerGy?? Question of the modern age
  • 3. Hydroelectric Power Energy created by a heavy flowing water
  • 4. OUR Objectives • We will be discuss about the source of Hydroelectric energy • History of hydroelectericity • We will describe “how Hydroelectric energy is produced?” • We will show Hydroelectric energy as an very useful acceptable source of energy • We will discuss where is Hydroelectricity is used
  • 5. iNVeNtioN oF hydroeletricity
  • 6. History of Hydroelectric Power • Nearly 2000 years ago the Greeks used water wheels to grind wheat into flour • In the 1700's, hydropower was broadly used for milling of lumber and grain and for pumping irrigation water • Appleton, Wisconsin became the first operational hydroelectric generating station in the United States, in 1882, producing 12.5 kilowatts (kW) of power
  • 7. • The total electrical capacity generated was equivalent to 250 lights • Within the next 20 years roughly 300 hydroelectric plants were operational around the world • The invention of the hydraulic reaction turbine created the sudden expansion of hydropower • 40% of the United States' electricity was provided by hydroelectric power in the early 1900's
  • 8. INTRODUTION • Hydroelectricity is the term referring  to electricity generated by hydropower; the  production of electrical power through the  use of the gravitational force of falling or  flowing water. It is the most widely used  form of renewable energy, Previously16%   of global electricity generation 3,427  terawatt-hours of electricity production in  2010,[1]
  • 9. • At todays date Hydropower is produced in  150 countries, including Asia. •  China is the largest hydroelectricity  producer, with 721 terawatt-hours of  production in 2010, representing around 17  percent of domestic electricity use. There  are now three hydroelectricity plants larger  than 10 GW: the Three Gorges Dam in  China, Itaipu Dam across the  Brazil/Paraguay border, and Guri Dam in  Venezuela.
  • 10. • The cost of hydroelectricity is compare vise  low, As it is a renewable electricity. •  The average cost of electricity from a  hydro plant larger than 10 megawatts is 3 to  5 U.S. cents per kilowatt-hour.  • We used hydro power because it becomes  our necessary to use hydro power as we  need a alternative for fossil fules • However, making dams interrupts the flow  of rivers and can harm local ecosystems,  and building large dams and reservoirs  often involves displacing people and 
  • 11. • wildlife. Once a hydroelectric complex is  constructed, the project produces no direct  waste, and has a considerably lower output  level of the greenhouse gas carbon dioxide 
  • 12. Who’s using it? • Supplies 20% of world’s  electricity and 6% of it’s  total commercial energy • 3 largest producers are Canada, U.S., and Brazil • Projected use over the  next 10 years: Canada  70%, China 10%,  U.S.10% 0% 10% 20% 30% 40% 50% 60% 70% Canada China U.S.
  • 13. TRADITIONAL WAYS OF MAKING  HYDROENERGY….
  • 14. Breast Shot Wheel Breast shot wheel: One type of traditional Water wheel Water wheels: source Of power for the Industrial revolution
  • 15. Overshot Wheel It was more efficient that breast shot wheel. Some mills using These wheels still in operation In rural areas in from 1950’s till know Miller: Mrs. Aarendale
  • 16. MODERAN WAY OF HYDROELECTRICIY……
  • 17. How useful is it? • Moderate to high net useful energy yield • fairly low operating and maintenance costs • low pollution • rarely shut down • help control flooding • supply a regulated flow of irrigation water to lowlands below the dam
  • 18. Compared to Others • Has moderate to high net useful energy • Solar energy and hydroelectric are the highest producers of energy besides nonrenewable resources
  • 19. Drawbacks • Flood vast areas • destroys wildlife habitats • uproots people • keeps nutrients from being sent downstream • decreases fish harvests below the dam • keep fish from migrating upstream • kills large numbers of fish
  • 20. HooverDam
  • 21. Glen Canyon Dam (Utah)
  • 22. • The largest Hydroelectric Power Plant in the world • The Yangst River in China
  • 23. THE END

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