1 / 18

Wave Power

Wave Power. Nicola Thomas. The Renewable Future for the UK. 24 th February 2005. Wave Power. Waves are created by interaction with wind on the surface of the water. The wind blows across the Atlantic Ocean all the way from America.

Download Presentation

Wave Power

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Wave Power Nicola Thomas The Renewable Future for the UK 24th February 2005

  2. Wave Power • Waves are created by interaction with wind on the surface of the water. • The wind blows across the Atlantic Ocean all the way from America. • This large distance means the UK has one of the highest wave power levels in the world.

  3. Wave Power - The Resource European Wave Resource Chart The chart shows annual average wave power in kilowatts per metre of crest width for various European sites. (Ocean Power Delivery Limited, 2005)

  4. Wave Power – The Potential • There is sufficient energy breaking on the UK shoreline to power the country three times over. • However, it is not practical to recover all the energy. • The economically recoverable resource for the UK has been estimated to be 87 TWh/y-1.

  5. Wave Power – The Technology There are two major areas of wave power: • Shore-line • Offshore The wave industry has many technologies striving for success, very few will, however, eventually achieve commercialisation.

  6. Wave Power – The Devices There are two current potential commercial technologies. One is shoreline and the other is offshore. • The Limpet - Wavegen (Shoreline) • The Pelamis - OPD (Offshore)

  7. Wave Power – The Technology • Pelamis has a generating capacity of 750 kW • The Pelamis is a semi-submerged structure. Wave-induced motion of hinged joints is resisted by hydraulic rams. This pumps oil through hydraulic motors which drive electrical generators giving electricity. • Limpet has a generating capacity of 500 kW and currently powers 300 homes in Islay. • Limpet uses the Oscillating Water Column Technology. This relies on the motion of the waves compressing and sucking air through a turbine which powers a generator.

  8. The Pelamis will not be ready to go commercial for another 5 years from present. Due to this the prediction for offshore is 0 PJ Wave Power – The PredictionsOFFSHORE 2010

  9. Due to scale of Pelamis I predict there will be a yearly build rate of 200 devices each taking 3 months to build. Load factor will be less than wind ~ 0.2 This is generation in 5 years:- 200 x 750 = 150 000 kW 150 000 x 0.2 x 8736 = 262 080 000 kWh x 5 = 1 310 400 000 / 1000 = 1 310 400 MWh/y-1 Or = 4.72 PJ Wave Power – The PredictionsOFFSHORE 2015

  10. I predict that in 5 years from the initial phase of commercialisation the amount of energy generated will double due to and increase in the number of wave farms 2000 devices deployed 1 310 400 + 1 310 400 = 2 620 800 MWh/y-1 Or = 9.43 PJ Wave Power – The PredictionsOFFSHORE 2020

  11. Again I believe that in 2025 and 2030 the industry will remain at a constant increase as although manufacture may improve the number of suitable locations may decrease due to adverse effects on shipping and other activities. 3000 devices deployed 1 310 400 x 3 = 3 931 200 MWh/y-1 Or = 14.15 PJ 4000 devices deployed 1 310 400 x 4 = 5 241 600 Or = 18.87 PJ Wave Power – The PredictionsOFFSHORE 2025 & 2030

  12. Wave Power – The PredictionsOFFSHORE The energy consumption for the UK is 10500 PJ per year. With Offshore Wave power producing 18.87 PJ It would therefore be able to contribute 0.17% of the UK's needs.

  13. Wave Power – The PredictionsSHORELINE These devices again are unlikely to be fully commercial until after 2010 The prediction is 0MW. 2010

  14. The major constraint for this type of shore based technology is location. These devices can only be built into hard rock. The South and the East coastlines, excluding Cornwall, are therefore not ideal. Pembrokeshire and West Scotland are good locations. ~10% of coastline is probably optimal. This is equal to 1649 devices Wave Power – The PredictionsSHORELINE Scottish coastline length: 16,491 km Spacing of devices 1 device= 1 km Build scale of around 30 per year This would take up 30 km/y-1 A maximum number of devices is 16, 491. 30 devices every year for 20 years = 600 devices by 2030

  15. By 2030 the Onshore wave industry will be generating 0.0001456 PJ As discussed earlier the major limiting factor for this technology is space. Large opposition would be created if it was proposed to put wave plants every 100 m along the coast. This wave plant also has a lower load factor than wind. 600 x 500 =300000kW/1000 =300 MW 300 x 0.2 x 8736 = 524160 MWh/y-1 1.89 PJ This works out at 0.0179% of the UK’s demand Wave Power – The PredictionsSHORELINE 2030

  16. Wave Power – The PredictionsTogether Together Offshore wave and onshore wave can produce 20.76 PJ by 2030. This works out at 0.2% of the UK’s energy demand 2030

  17. Wave Power - Major Restrictions • Costs: Competition with lower cost technologies. • Technology Force of the sea (Osprey) Transmission • Fewer potential sites • Higher installation costs Individual projects (economies of scale)

  18. Wave Power The Renewable Future for the UK THE END

More Related