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V.L.SUBHASHN.SIVA SUDHEERN.SUBBARAUYUDUJ.B.V.H.PRADEEP

PRESENTED BY:

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ABSTRACT

INTRODUCTION

DESIGN

WORKING BUOYANCY FORCES

PELAMIS WAVE POWER GENERATION

ADVANTAGES

FEATURES AND SCOPE

REFERENCES

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At present we are using both conventional energy sources like thermal energy , nuclear energy etc.and the renewable sources like wind energy, solar energy , hydro energies.

It is the world first commercial wave form is to open off northern Portugal.

The $ 11 m pelamis project named after a surface- swimming sea snake will initially generate 2.25M.W of clean energy, enough to power 1,500 homes.

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In the present scenario we are using the sources of renewable energy-such as wind and Solar-have been widely adopted in recent years

The Portuguese government has agreed to pay a premium,called a "feed-in tariff," for wave energy to help kick-start the technology

Also, the energy produced is not cost competitive with electricity from other sources.

At the moment, the big increases in renewable energy have not been in the wave area.

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The Pelamis is a semi-submerged, articulated structure composed of cylindrical sections linked by hinged joints."

The hydraulic motors located inside the hinged joints drive electrical

generators to produce electricity .

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A single seabed cable can connect several devices together and link the structure to shore.

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Pelamis is actually the name of a surface swimming sea snake, which is quite an apt description for the machine when you see how it moves," says Max Carcas, who runs

business development for the Scottish firm Ocean Power Delivery .These train-like tubes will eventually be linked together, four in a row, with the rows deployed in parallel to each other.More rows can be added to create more electricity and the

rows of tubes are connected to the power grid via a single cable. Together, the hinged "snake" will be 140m (460ft) long.

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` A bit like a ship at anchor or a flag on a flagpole, it self orientates into the waves," said Mr Carcas.

`

These snake-like movements push hydraulic fluid through generators to produce electricity .` The plan is to place 30 of these devices five kilometers out to

sea .

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The machines will be anchored to the seafloor, and large cables will deliver the energy back to shore. The wave farm is expected to supply enough energy for 15,000 households .

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` At the moment, the big increases in renewable energy have not been in the wave area.

` Wave energy would be in the next couple of years making the

major breakthrough.` The energy produced is not cost competitive with electricity

from other sources.

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1) Scottish Executive forum on renewable energies identified a potential for 7,000 jobs in marine energy by 2020, with 10% of Scotland's electricity being supplied by marine energy and an industry supplying 100 MW to export markets.

2) The Scottish Executive has targets to generate 18% of electricity from renewables by 2010 and 40% by 2020. Scotland is expected to meet its 18% green power target during 2007.

3) Proponents of clean energy have long seen the oceans as a great

hope for the future. Ocean waves carry tremendous power, and could, in theory at least, provide much of the world's electricity

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` WWW.bbcnews.com ` WWW.wavepower.com ` WWW.google/energyproduction/portuguese/pelamis.com ` REFERENCE THE HINDU NEWSPAPER

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