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{Nature_and_Environment.95.6}: {bshmr} Fri, 27 Feb 2009 18:23:14 EST (25 lines)

IMO, one of the better pieces on two related technologies for
alternative sources of electricity.

http://www.newscientist.com/article/mg20126972.000-salt-solution-cheap-power-from-the-rivers-mouth.html?DCMP=OTC-rss&nsref=online-news

Salt solution: Cheap power from the river's mouth 25 February 2009 by
Kate Ravilious; Magazine issue 2697. Subscribe and get 4 free issues.
For similar stories, visit the Energy and Fuels Topic Guide

[quote]STAND on the banks of the Rhine where it flows into the North
Sea, near the port of Rotterdam in the Netherlands, and you'll witness
a vast, untapped source of energy swirling in the estuary. According
to Dutch engineer Joost Veerman, it's possible to tap this energy
without damaging the environment or disrupting the river's busy
shipping. For rather than constructing a huge barrage or dotting the
river bed with turbines, Veerman and his colleagues at Wetsus, the
Dutch Centre for Sustainable Water Technology in Leeuwarden, believe
they can tap energy locked up in the North Sea's saltwater by
channelling it, along with fresh water from the Rhine, into a novel
kind of battery. With a large enough array of these batteries, he
says, the estuary could easily provide over a gigawatt of electricity
by a process they've called Blue Energy - enough to supply about
650,000 homes.

...[/quote]

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