Tidal Power

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Tidal Power
Chris Webber
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• Tidal power is dependant on tides created by the
  moons gravitational pull on the earth

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Potential

• Places with highest tidal range
• Bay of Fundy, gulf of Kutch in India

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Types of Tidal Power Generation

• Barrages
• Tidal Streams

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Tidal Barrage

• Turbines
• Sluice gates
• Embankments

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Bulb Turbine
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Straflo or Rim Generator Turbine
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Tubular Turbine
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Benefits

• Renewable
• Can help protection of ports in storms
• Can help navigation for shipping
• Reliable, more so than solar or wind

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Environmental factors

• Change in currents
• Change in sediments
• Salinity and quality of water
• Migratory species

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Tidal streams

• Instead of damming estuaries the tidal currents
  are harnessed using wind like turbines

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Main methods of current generation

• Marine current generator
• Stingray
• Tidal fence

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Benefits of Tidal stream

• Far less intrusive
• Can generate same amount of power as wind with
  smaller blades moving slower due to density of
  water
• More available sites
• More reliable than wind
• Usually less expensive than barrage

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Problems

• Fouling
• Relatively new technology
• Dont get the funneling effect of barrages

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Questions
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Bibliography

• Boyle, Godfrey.(2004) Renewable Enegy, Power for
  a Sustainable Future. World wide Oxford
  University Press
• Tidal Power, Wikipedia. Accessed Mar. 19 from
  http//en.wikipedia.org/wiki/Tidal_power
• Tidal Power. Accessed Mar 20 fromhttp//www.esru
  .strath.ac.uk/EandE/Web_sites/01-02/RE_info/Tidal
  20Power.htm