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Tidal Power Energy

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Tidal Power Energy Renewable Energy in Future Fan Zou Tidal Power History One of the oldest forms of energy, tide mills in use on the Spanish, French and British ... – PowerPoint PPT presentation

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Title: Tidal Power Energy


1
Tidal Power Energy Renewable Energy in Future
Fan Zou
2
Tidal Power History
  • One of the oldest forms of energy, tide mills in
    use on the Spanish, French and British coasts,
    date back to 787 A.D.
  • The first tidal power station began working in
    France in 1965
  • More and more commercial-scale tidal barrage was
    put in service

3
Why there are tides
4
Tides in physics
  • Motions of Earth, Moon and Sun
  • Renewable resource
  • Contains extreme amounts of potential energy
  • Requires large tidal difference for generating
    power
  • Affects environment less than other fuels and
    gasses
  • Might be a solution of current energy problems

5
ADVANTAGES  
  • Renewable resource, it needs no fuel to maintain,
    and free of charge
  • Little pollution, unlike fossil fuels, it
    produces no greenhouse gases or other waste
  • It will protect a large stretch of coastline
    against damage from high storm tides
  • More efficient than wind
  • Predictable source of energy, it is independent
    of weather and climate change and follows the
    predictable relationship of the lunar orbit

6
Disadvantages
  • Very expensive to build and maintain
  • Barrage has environmental affects
  • Fish and plant migration
  • Silt and mud deposits
  • Waste and sewage blocks
  • Technology is not fully developed 
  • Only provides power for around 10 hours each day,
    when the tide is actually moving in or out

7
How it works
  • First generation, barrage-style tidal power
    plants
  • Works by building Barrage to contain water after
    high tide, then water has to pass through a
    turbine to return to low tide and generating
    electricity
  • Sites in France (La Rance), Canada (Annapolis),
    and Russia

8
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9
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10

  • Bulb Turbine

  • Rim Turbine

  • Tubular Turbine

11
Category of generation
  • Ebb generation
  • Generation occurs as the tidal ebbs
  • Flood generation
  • Generation occurs as the tidal floods
  • Two-way generation
  • Generation occurs both as the tidal ebbs and
    floods

12
Two-basin schemes
13
Second-generation tidal power plants
  • Barrage not need, limiting total costs
  • Two types- vertical axis and horizontal axis
  • Harness the energy of tidal streams
  • More efficient because they allow for energy
    production on both the ebbing and flooding tides
  • One site has potential to equal the generating
    power of 3 nuclear power plants

14
Second-generation tidal power plants
15
Representative tidal projects
  • La Rance
  • (France)

16
Representative tidal projects
  • Annapolis
  • Royal

  • (Canada)

17
Representative tidal projects


  • Jiangxia

  • (China)

18
Conclusion discussion
  • Comparing with wind power energy and solar
    energy, tidal power seems not a big sustainable
    resource
  • We have to make the cost lower, so that it can be
    built in a large scale
  • Turbine has to be more effective, technology of
    its working process should be fully developed
  • We should never neglect the environment impacts
    of tidal power, we do need a way to solve the
    current problems.

19
  • Thank you!!

20
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