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Starfire
29-11-2011, 10:38 AM
http://www.sciencedaily.com/releases/2011/11/111123151916.htm
Looks promising.

C. Flower
29-11-2011, 12:06 PM
Hate batteries for big jobs or small. Use windups for small ones (torches, radios), water pumping and gravity for sustainable energy.

DiarmuidM
29-11-2011, 12:24 PM
That new battery looks promising.

What Ireland really needs now are wind turbines that don't generate any noise ?

DCon
29-11-2011, 12:27 PM
That new battery looks promising.

What Ireland really needs now are wind turbines that don't generate any noise ?

These wave turbines could surely be used in other parts of Ireland

The turbines work when the tide is going in and out, so the output should be predictable


By the end of the year, twin underwater turbines should be generating 1.2 megawatts of electricity off the coast of Northern Ireland in a landmark demonstration of tidal power technology.

Marine Current Turbines, a company based in Bristol, UK, had hoped to begin installing the turbines at Strangford Lough (Google map) on Monday, but the construction barge scheduled to deliver the turbines was delayed. A company spokesman says the installation will now take place later in 2007. It will be the world's largest tidal power project.

The underwater turbines look and work very much like wind power turbines. Each blade is 15 to 20 metres across and is mounted on an axis that attaches to a 3-metre-wide pile driven into the seabed.

Tide-driven currents will move the rotors at speeds of between 10 and 20 revolutions per minute, which the company claims is too slow to affect marine life. The turbines will drive a gearbox that will, in turn, drive an electric generator and the resulting electricity will be transmitted to the shore via an underwater cable.

The Strangford Lough tidal generator is intended purely as a demonstration project. Eventually, MCT intends to build farms of turbines consisting of 10 to 20 pairs each.

http://www.newscientist.com/data/images/ns/cms/dn12519/dn12519-1_250.jpg

http://www.newscientist.com/article/dn12519-underwater-turbines-set-to-generate-record-power.html