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Tidal Energy

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austin szereda

on 7 November 2012

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Transcript of Tidal Energy

By: Austin Szereda-Papeburg and Matthew Jackson What is your energy source? Where do we get it from?Tides are formed by the moons gravitational pull. Weather plays a factor in this as well, but the moon causes tides to go in and out. How does the Earth create your energy source?Tides are created by the gravitational interaction between the Earth Moon and Sun. How is your energy source stored and used?Tidal energy is used as a way to get energy from the ocean by using the oceans waves or temperature difference in the water. You can store it by capturing the water at high tide and once there is a low tide release the water back and gain the energy from the water flowing back out Where is your energy source currently being used?France has the biggest Tidal power plant in the world we live in today. Tide mills have been used in both Europe and on the Atlantic coast of North America When was this energy source first used? Where? and by who?It was only in the 19th century that the process of using falling water and spinning turbines to create electricity was introduced in the U.S. and Europe. M. Jannaschii discovered it. How do we convert Tidal energy into usable electricity?-Make a dam in a body of water that is affected by tides.
-Equip the dam with turbines that can hold the tide when its a high tide.
-Make sure the water fills the dam.
-When the tide is low, the dam will release the water.
-It will pass through the turbines.
-The turbines will then convert the tides kinetic energy into electrical energy for our use. Disadvantages and Advantages?
Some disadvantages are:
Extreme weather can produce waves of great intensity.
Tides have no direction, durability and size.
Cost of construction of tidal power plant is high.
Usually the places where tidal energy is produced are far away from the places where it is consumed. This transmission is expensive and difficult.
Intensity of sea waves is unpredictable and there can be damage to power generation units.

Tidal energy is environment friendly energy and doesn't produce greenhouse gases.
Tidal Energy doesn’t require any kind of fuel to run.
Although cost of construction of tidal power is high but maintenance costs are relatively low.
The life of a tidal energy power plant is very long.

Does tidal energy damage the Earth? In what ways? Is it environmentally friendly? Why?
No, Tidal energy does not damage the Earth because there are no greenhouse gases being released. Tidal energy does have an impact on the environment because it separates fish and can ruin a food chain creating problems for humans. Tidal influence may be more dramatic leading to increased deposition / reduction of material which may require increased management such as dredging, this of course is also highly depending on open ocean currents and prevailing winds. One way its environmentally friendly is that it does not pollute the Earth. How efficient is your energy source: is it a realistic source of power? Why or why not?
Tidal energy is a very realistic source of energy, but we would have to find ways for it not to affect the environment. How much power can be generated by your energy source? Do the costs outweigh the benefits?
The total energy contained in tides worldwide is 3,000 gigawatts , though estimates of how much of that energy is available for power generation by tidal barrages are between 120 and 400 GW, depending on the location and the potential for conversion. By comparison, a typical new coal-based generating plant produces about 550 megawatts. It would cost more money to install turbines to create energy, but would potentially save the world from air pollution. Tidal energy facts:
The tide moves a huge amount of water twice each day and although the tidal energy supply is reliable and plentiful, converting it into useful electrical power is not easy.
There are two basic theories on how to convert tides into power. The first involves converting the power of the horizontal movement of the water into electricity. The second involves producing energy from the rise and drop of water levels.
There are three prototypes of tidal energy devices: horizontal axis turbine, vertical axis turbine, and oscillating devices.
Turbines, similar to wind turbines, can be anchored to the sea bed to generate electricity from tidal currents.
Tidal energy has an efficiency of 80% in converting the potential energy of the water into electricity.
Tidal power changes the sedimentation and turbidity (how clear the water is) of the water system.
Tidal power can provide secondary benefits such as bridges and roads, which are built over the tidal generators
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