waveenergy1-141229133522-conversion-gate01.pptx

Wave energy

1. 1 Wave Energy ENERGY CONVERSİON

2. What is Wave Energy? Waves are generated by the wind as it blows across the sea surface. Energy is transferred from the wind to the waves. Wave energy is sometimes confused with tidal energy, which is quite different. Waves travel vast distances across oceans at great speed. The longer and stronger the wind blows over the sea surface, the higher, longer, faster and more powerful the sea is . 2

3. Advantages of wave energy Renewable : The best thing about wave energy is that it will never run out. Unlike fossil fuels, which are running out.The waves flow back from the shore, but they always return . Environment Friendly : Also unlike fossil fuels, creating power from waves creates no harmful byproducts such as gas, waste and pollution 3

4. Advantages of wave energy The energy is free - no fuel needed, no waste produced.  Not expensive to operate and maintain.  Can produce a great deal of energy. 4

5. Disadvantages of Wave Energy Suitable to Certain Locations : The biggest disadvantage to getting your energy from the waves is location. Only power plants and towns near the ocean will benefit directly from it. Effect on marine Ecosystem  : As clean as wave energy is, it still creates hazards for some of the animals near it 5

6. Depends on the waves - sometimes you'll get loads of energy, sometimes almost nothing.  Needs a suitable site, where waves are consistently strong.  Must be able to withstand very rough weather.     6 Disadvantages of Wave Energy

7. Comparing to other renewable energy sources Northern CA: 30 kilowatt per m wave crest (with storms 1 Megawatt per m) Solar energy: 300 watts per m 2 Wind energy: 800 watts per m 2 7

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9. Renewable Energy Sources Ocean energy wave energy is behind wind and solar energy developments 85% fossil based 8% nuclear 4% hydro Less than 4% is Solar, Wind, Geothermal 8% 44% 48% (6% geothermal, 2% solar and wind)

10. Types of devices for wave energy Surface Attenuator (pelamis) O scillating W ater C olumn (limpet) Point Absorber Buoy Overtopping Device Oscillating Wave Surge Converter Tidal Energy 10

11. Surface Attenuator (also called pelamis) 11

12. Surface Attenuator 12

13. 13 Oscillating Wave Surge Converter

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15. O scillating W ater C olumn 15

16. O vertopping D evice 16

17. Point Absorber Buoy 17

18. 18 Tidal Energy

19. Benefits of Ocean Wave Energy Why better than other renewable energies Available 24/7 on 365 days - therefore power produced from them is much steadier and more predictable – waves can be accurately predicted 48 hours in advance and therefore forecast energy output (BUT irregularity in wave ampitude, and direction) Good data on waves from wave monitoring bouys Wave energy contains 1000 times the kinetic energy of wind (can produce the same amount of power in less space)

20. THANK YOU 20