Tidal Energy

In: Science

Submitted By ryimam
Words 1468
Pages 6
Tidal Energy

October 20, 2011

Abstract Tidal energy is an innovative and environmentally safe form of hydropower that harnesses the energy that comes from ocean tides and converts it into electricity. This type of alternative energy provides us with another outlet we can use instead of burning our limited amount of fossil fuels. Tidal energy is feasible in some parts of the world that have ample amounts of flow velocities. With the use of new turbine technology, the availability of sites for tidal energy will allow it to be a practical use of renewable energy.

Tidal Power Technologies
There are three main generating methods to harness power from tidal waves. The first one is the use of a barrage or dam which uses kinetic energy to move the water to power turbines. The turbines turn an electric generator on to produce the electricity. The second generating method used is the tidal fence, which are giant turnstiles that spin towards tidal currents. These turnstiles usually run at 5-8 knots, and are geared more toward winds of a higher velocity. The third and final method is the use of tidal turbines which are positioned underwater in rows similar to wind turbine positioning. The use of tidal turbines is the better of the three methods because it maximizes the amount of energy harnessed from the tidal waves. The turbines are significantly effective since seawater has a higher density than air, so the ocean currents can carry significantly more energy. This allows the turbines to generate the same amount of energy as a wind turbine but with about one-fourth the diameter, which is impressive because with that information tidal plants can be constructed similarly to the wind turbines.
Past and Current Technology
There are numerous tidal power plants stationed around the world that are successful generating electricity. The first ever tidal power station was…...

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