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Hydroelectric power

Hydroelectric power. Yul van der Stap. What is…. Hydroelectric power power generated through the energy of flowing water. H istory. History. Fox river in Appelton , Wisconsin. History. D am. Energy transformation. F ormula. PE= pghV P= ηρghQ For 1m^3/sec from head of 1m ,

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Hydroelectric power

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  1. Hydroelectric power Yul van der Stap

  2. What is… • Hydroelectric power • power generated through the energy of flowing water

  3. History

  4. History • Fox river in Appelton, Wisconsin

  5. History

  6. Dam

  7. Energy transformation

  8. Formula • PE=pghV • P=ηρghQ • For 1m^3/sec from head of 1m , P=9 kW, if η 90%

  9. Advantages & disadvantagesDam • + • Constant rate of electricity production • Long durability • Lake can be used as • irrigation purpose • Leisure area • - • High cost of construction • Destruction of environment • Alter of natural water table level.

  10. Run of river

  11. Energy transformation

  12. Formula • Pmax =½ηρQv2 • Q=Av • Pmax =1/2ηρAv3 • if 1m3 of water flows 1ms-1 with 100% efficiency, P=0.5kW

  13. Advantages & disadvantagesRun of River • + • Avoids the need to build large dams to store water • projects will operate anywhere between 65% to 90% of the time in any given year • Low potential risk of water quality • Has minimal impact on environment • - • Low production rate • Low availability

  14. Tidal flows

  15. Transformation • KE (water) • KE (turbine) • Electricity (generator)

  16. Formula • Pmax =1/2ηρAv3 • if 1m3 of water flows 1ms-1 with 100% efficiency, P=0.4kW

  17. Advantages & disadvantagestidal flow • + • Can harness until sun and moon exist • Efficiency of 80% • Predictability • Protection of coastal area • - • High construction cost • Effective only 10hrs /day • Environmental damage

  18. The end • http://www.technologystudent.com/energy1/hydr2.htm • http://www.mpoweruk.com/hydro_power.htm • http://greenliving.nationalgeographic.com/history-hydroelectric-power-20128.html • http://www.window.state.tx.us/specialrpt/energy/renewable/ • http://teeic.anl.gov/er/lhhydro/restech/desc/index.cfm • http://www.runofriverpower.com/media/documents/CEBC_FS-RunOfRiver_WEB354.pdf • http://hydroearth.blogspot.kr/2012/10/tidal-power-advantages-and-disadvantages.html • http://www.youtube.com/watch?v=qRUl1mJQHmc&list=PLC73D6D66C6F9D747 • http://www.pembina.org/re/sources/hydro-power • http://www.youtube.com/watch?v=rnPEtwQtmGQ

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