Tidal Power

Tidal Power

Chris Webber

• Tidal power is dependant on tides

created by the moons gravitational pull on the earth

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

Types of Tidal Power Generation • Barrages • Tidal Streams

Tidal Barrage • Turbines • Sluice gates • Embankments

Bulb Turbine

Straflo or Rim Generator Turbine

Tubular Turbine

Benefits • Renewable • Can help protection of ports in

storms • Can help navigation for shipping • Reliable, more so than solar or wind

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

Tidal streams • Instead of damming estuaries the

tidal currents are harnessed using wind like turbines

Main methods of current generation • Marine current generator • Stingray • Tidal fence

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

Problems • Fouling • Relatively new technology • Don’t get the funneling effect of barrages

Questions

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 from:http://www.esru.strath.ac.uk/EandE/Web_s ites/01-02/RE_info/Tidal%20Power.htm