10-12-2012, 02:00 PM
Tidal and Wave Energy
Tidal and Wave Energy.ppt (Size: 429 KB / Downloads: 267)
History of Tidal Energy
787: simple technique of a waterwheel by the Spanish, French, and British
1966: “La Rance” tidal power plant went in operation.
2001: British Parliament states “the world can no longer neglect the massive potential of wave and tidal energy”
2002-present: Large investments in research and prototypes spark proposals in Turkey, China, and United States; among others
History of Wave Energy
1799: First patent of a device designed to use ocean waves to generate power
1910: First oscillating water column was built by Bochaux-Praceique to power his house
1940s: Yoshio Masuda experimented with many concepts of wave power
2004: Wave power was delivered to an electrical grid for the first time
Tidal Stream Generators
Very close in concept to traditional windmills
Most popular prototype on the market
Prototype sites include Norway, England, and New York.
In 2007 8 prototype turbines where placed in the East River between Queens and Roosevelt Island.
It is the first major tidal power project in the USA
Powers 1/3 of a parking garage and a supermarket
SeaGen
World’s first large scale commercial tidal stream generator.
First one was installed in the Strangford Narrows (Ireland)
Generates 1.2MW between 18-20 hours a day
Blades span 16 meters in diameter
Comparison to Wind Energy
Tidal Stream generators draw energy in the same basic way wind turbines do
Higher density of water allows a single generator to provide significantly more power
Water speeds of nearly 1/10 the speed of wind can provide the same energy output
Current in water is much more reliable then wind in the air.