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Transcript of Tidal Energy
The United States receives 2,100 terawatt-hours of incident wave energy along its coastlines each year, and tapping just one quarter of this potential could produce as much energy as the entire U.S. hydropower system.
Oregon and Washington have the strongest wave energy resource in the lower 48 states and could eventually generate several thousand megawatts of electricity. How Do We Get Tides Tides are caused by gravitational interaction between the Earth and the moon. The gravitational attraction of the moon causes the oceans to bulge out in the direction of the moon. Another bulge occurs on the opposite side, since the Earth is also being pulled toward the moon (and away from the water on the far side). Since the earth is rotating while this is happening, two tides occur each day. How It Works Tidal Energy in WA? Citations http://earthfix.opb.org/energy/article/tidal-power-project-in-puget-sound-one-step-closer/ Snohomish County Public Utility District also wants to put two turbines 150 feet below the waves near Whidbey Island. This project would generate enough power for about 20 homes annually. So as you can see there is not tidal power plants yet in Washington but we are still working on it. Advantages Once you have built the tidal barrage, tidal power is free.
It produces no greenhouse gases or other waste.
The tidal barrage does not require fuel.
The electricity that is produced is reliable.
It is not expensive to maintain.
The tides are totally predictable.
Has a long life. Disadvantages A barrage across an estuary is very expensive to build.
Affects marine life such as fish.
There are few suitable sites.
Difficulty in transmissions of tidal energy.
Only provides power for around 10 hours each day, when the tide is actually moving in and out.
Weather change can also affect the tides and how fast or slow they are. How Do Tides Produce Electricity Tidal energy is a form of energy that comes from tides in the ocean. As the tide goes in and out it goes through tunnels in a large dam called a barrage with turbines in the middle. As the tide moves in, it pushes the turbine thus creating electricity. Tides can also push air through pipes to move the turbine. http://www.darvill.clara.net/altenerg/tidal.htm http://www.pstidalenergy.org http://www.tri-cityherald.com/2011/08/07/1595727/washington-leads-way-in-harnessing.html http://www.sabresocials.com/jacquie/.../energy2%20Home%20.ppt http://www.rnp.org/node/wave-tidal-energy-technology http://library.thinkquest.org/06aug/02365/tidal.html TIDAL ENERGY prezi.com How Does Tidal Energy
Affect the Atmosphere No carbon dioxide, no fuel, and no greenhouse effect.
It is renewable source of energy as long as the water keeps moving.
But if it affects marine life there will be less of a gas exchange. prezi.com How Does Tidal Energy
Affect the Biosphere How Does Tidal Energy
Affect Our Geoshpere prezi.com Interruption of ocean wildlife Potential destruction of estuaries www.google.com How Does Tidal Energy
Affect the Hydrosphere How Does Tidal Energy
Affect the Lithosphere Economically or Technological Feasible? Recommendations For Future Use Of Tidal Energy www.google.com The tidal energy plant disturbs the water flow of the ocean. prezi.com Tidal energy power plants have a potentional to change the shoreline. prezi.com Increase or Decrease Reliance on Tidal Energy? prezi.com www.youtube.com prezi.com prezi.com Sites Where Tidal Energy
Plants Are Located There are tidal energy power plants in the following countries:
As of August 2010:
South Korea 254mv
United Kingdom 1.2 mv
South Korea 1.5mv Future Tidal Energy Location In US.... Tidal and wave energy could help to produce up to 15 percent of the US electricity supply by 2030. www.googe.com *There are tidal energy power plants currently in Maine and New York. http://tidalpowerus.com/ Ivleen Kaur, Joseph Allen, Tina Tran, Jessica Ngyuen https://blogs.dal.ca/sustainabilitynews/2012/05/15/dal-prof-makes-tidal-power-recommendations/ We should most defiantly increase our use of tidal energy in Washington and everywhere we can. It is green and very reliable and renewable! We would definitely recommend the future use of Tidal Energy. It is extremely reliable, it is very green, and once after the energy plant is built the power is free to get. The energy is totally reliable for tides are completely predictable and the plants are very easy to maintain. There are little downs to tidal energy and it provides us with a lot of energy. Economic wise tidal power is not that much feasible. Tidal energy work only when tides are high which makes it impossible for countries without sea/ocean like desert or inland countries.
Dams do not provide enough energy to fulfill our current and future energy use.
Much environmental damage is caused including flooding upstream, damages to villages and towns and loss of lives. Technological wise tidal power is feasible. Tidal power produces much more clean and safer energy than the leading fossil fuels. If we "upgrade" the current tidal energy plants and use modern technology we can have a more efficient tidal energy power plant.