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Hydropower

Hydropower. Table of contents WIP. Introduction Tech Applications Numbers. What is hydropower ?. Hydropower  or  water power is power  derived from the  energy  of falling and running water, which may be harnessed for useful purposes . Hydropower plants Green energy

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Hydropower

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  1. Hydropower

  2. Table of contents WIP • Introduction • Tech • Applications • Numbers

  3. What is hydropower? • Hydropower or water power ispower derived from the energy of falling and running water, which may be harnessed for useful purposes. • Hydropower plants • Green energy • Requires rivers / large height differences

  4. Physicalbasis • First, water is in thereservoir • The waterruns to turbinesthatrotatethegenerator • Electricity is formed in thegenerator and thentransformed into powergrid for consumers

  5. Startingfromtheefficiency, output power is… η= Poutput=ηPinput=η =η=η Poutput=

  6. Anotherway to definethepower of hydropowerplant • From thelaw of conservation of mechanicalenergy: Em,1−W=Em,2 Ep,1+Ek,1−W=Ep,2+Ek,2 Ep,1−W=Ek,2 mgh1−W=mv22 v2=√2gh1− v2=√2gh1− waterspinstheturbineswiththatspeed

  7. The Generated Voltage voltage time

  8. Hydropower in Finland • Over 250 plants, from 178 MW to 0.4 MW • Firstone in 1891 in Tampere • 4% of Finland’stotalenergyconsumptioncomesfromhydropower

  9. Issues • Landusage: - Size • Wildlife impacts - Fish - Natural waterflowdisturbed • Spoiledlandscape

  10. Presentation by J-P, Eero and Jasu Finnish Comenius team Erkko-lukio 2014 This project has been funded by the European Commission. The Commission accepts no responsibility for the contents.

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