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Wave Energy

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by

Kathie Luk

on 25 February 2014

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Transcript of Wave Energy

Majority of the earth is water, so there are always waves being produced
Can be predicted through satellite measurements, and forecasts
Which helps with network planning

Wave Energy
Depending on the waves, sometimes you'll get loads of energy, sometimes almost nothing.
Needs a suitable site, where waves are consistently strong.
Some designs are noisy.
Must be able to withstand very rough weather
Why wave energy?
Statistics
Wave energy is measured in terawatt-hours/year (TWh/year)
Alaska:
620
TWh/year
U.S. West Coast:
250
TWh/year
U.S. East Coast:
160
TWh/year
Hawaii:
80
TWh/year
The Gulf of Mexico:
60
TWh/year
Puerto Rico:
20
TWh/year

The Future
Wave energy is still a developing resource, but it is said to be competitive in the near future
Works Cited
What is wave power?
Examples of different wave power
http://www.darvill.clara.net/altenerg/wave.htm
http://www.pelamiswave.com/wave-power
http://www.smartplanet.com/blog/pure-genius/wave-power-how-it-works/
http://www.kids.esdb.bg/ocean.html
http://www.solarpowernotes.com/renewable-energy/wave-power/wave-energy.html#.UwD81fldUUM
http://www.popularmechanics.com/science/energy/hydropower-geothermal/5-bright-ideas-to-capture-the-oceans-energy#slide-5
http://www.conserve-energy-future.com/Advantages_Disadvantages_WaveEnergy.php
http://pichost.me/1585003/
http://www.boem.gov/Renewable-Energy-Program/Renewable-Energy-Guide/Ocean-Wave-Energy.aspx
http://www.ecocitizenaustralia.com.au/carnegie-wave-energy-australia/
Benefits
Downsides and Challenges
Form of energy produced with movement of ocean waves
Like solar and wind, wave is a renewable natural resource of energy
The longer the waves travel, the more power they contain
The energy is free - no fuel needed, no waste produced.
Can produce a great deal of energy.
Compared to wind and solar, waves effectively average out the wind that generates them over large areas which results in a high level of consistency.
Benefits Cont'd
Environmentally friendly
Abundant and widely available
Different ways to harness
No damage to land

Machines may the seafloor, change the habitat of near-shore creatures and create noise that disturbs the sea life around them
Affects the lives of the people who rely on fishing for a living
Downsides and Challenges Cont'd
Pelamis
Long tube that bobs up and down in the wave
When the hinges bend they, pump hydraulic fluid which drives generators
CETO
Underwater equipment on the sea bed near the coast
Waves passing across the top of the buoys, pumps seawater to drive turbines on land
Also used to filter seawater into drinking water
Oyster
Captures energy in near shore waves and converts it into clean sustainable electricity.
It's wave-powered pump which pushes high pressure water to drive an onshore hydro-electric turbine.
Wave Energy Map
The ocean contains a tremendous amount of power, and people are beginning to realize it's potential
Full transcript