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Wave

Wave. Kyoko Abe 16 March 2010. Outlines. Concept Technology Market Status Potentials Projection. Concept – What is wave energy?. Waves are formed by the wind. The stronger and longer distance of wind generates larger waves and energy.

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Wave

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  1. Wave Kyoko Abe 16 March 2010

  2. Outlines • Concept • Technology • Market Status • Potentials • Projection

  3. Concept – What is wave energy? • Waves are formed by the wind. The stronger and longer distance of wind generates larger waves and energy. • Wave energy is a concentrated form of solar energy. • The greatest amount of energy is available in deeper well-exposed waters offshore. • The capacity to harness the incident energy is larger than that of wind or solar systems. (refer Fig.1) Fig.1

  4. Technologies • Devices take energy out of the motion of the water near surface and convert the action into movements that power generators to produce electricity.

  5. Technologies OPT OWC Near shore OWC Pelamis

  6. Market Status • The primary market for wave energy is electricity generation. • There are opportunities to produce mechanical energy for the desalination of, or mineral extraction from, sea water. • While still new technologies with high cost, significant improvements are predicted generating costs of devices. (5p/kWh or less at 8% discount rate) • Economically competitive in the market of isolated communities that are not connected to the grid.

  7. Market Status- the U.K. • The U.K. is situated at the end of long stormy fetch of the Atlantic, where characterised by high wave energy. • Work on wave energy within the U.K. began in the early 1970s. • Department of Trade and Industry (DTI) has supported R&D on smaller devices which are more economic. Areas Studied for UK for wave energy resource assessment

  8. Potentials • The wave energy devices are less environmentally degrading than others. • Limit potential for chemical • pollution • Little visual impact • Low noise generation • Less influence the coastal • environment • Less CO2 emission than • others

  9. Projection- Technologies • Multiple concepts such as wind-wave, wind-tidal, or wave-tidal system may emerge as ocean energy exploration.

  10. % in total renewable energy 70 60 Projection- in the U.K. 50 40 30 • UK targets of 20% of electricity from renewable energy sources by 2020. • A large share of the European deployment of marine energy devices by 2020 could occur in the UK. • Beyond 2020 the industry would turn to long-term off shore operation in the UK. • Further improvement of generating costs is expected as the same way as wind turbines. 20 10 2020 2025 2010 2015 2030 year % of wave energy providing energy in total renewable energy

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