There are a number of emerging designs for slow-moving turbines that will capture the flow of tides on rivers and estuaries. A new, two-way, design may solve a a knotty design and operations challenge.Science Daily.com reports:
"Most current tidal stream generators are essentially wind turbines turned upside down and made to work underwater. They often include complex gearboxes and move the entire assembly to face the flow of the water..... The Southampton design does not need to turn around because the design of its turbine blades means that they turn equally well, regardless of which way the water flows past them. The blades are also placed in a specially shaped housing that helps channel the water smoothly through the turbine.
Another beauty of the Southampton design is that everything is wrapped in a single package that can be prefabricated so there will be few on-site construction costs. “Just drop it into flowing water and it will start generating electricity." See full article.
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