Tuesday, September 11, 2012

Worlds largest windturbine

This is projected to a be a 6 megawatt unit.

There are plenty of concerns that I have with this kind of power generation, but as an engineering feat, this is pretty impressive stuff.

"A single of these giant wind turbine blades produced by German manufactuer Siemens is almost as big as the wingspan of an Airbus A380, the world's largest airliner. At 75 meters (246 feet), this massive beast is destined for a prototype 6-megawatt turbine to be erected at Denmark's Østerild test station. This arms' race in wind turbine size is due to the simple fact that as turbine blades get longer, the amount of electricity produced increases exponentially - it's all about the surface area covered by the rotor - and as more offshore projects are built, it makes more sense to build fewer big turbines than lots of small ones to control costs." 

"The entire blade is poured as a single piece made of glass fiber-reinforced epoxy resin and balsa wood. As a result, the blade has neither seams nor bonded joints and is extremely robust. The gigantic rotor, which measures 154 meters, has to withstand huge air masses, as it is hit by the energy of 200 tons of air per second when the wind blows at a speed of 10 meters per second."

Read more at Treehugger.com.

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