‘Exascale’ Wind Turbines
February 1st, 2016Via: Engadget:
The US Department of Energy’s plan to generate 20 percent of the nation’s electrical power from wind by 2030 is ambitious, to say the least. To pull it off, the turbines will need to be located offshore, where winds are steadier and stronger. However, putting wind turbines in the ocean is also far more expensive, so they need to be enormous in order to make it worthwhile. Researchers from Sandia National Laboraties have come up with a design that features 650-foot blades — over two football fields long — that can generate up to 50 megawatts of power.
Such “exascale” turbines, called segmented ultralight morphing rotors (SUMRs), are over six times the size of the largest existing models. Thanks to economies of scale, a single unit could power around 10,000 homes. “The U.S. has great offshore wind energy potential, but offshore installations are expensive, so larger turbines are needed to capture that energy at an affordable cost,” says Sandia’s lead turbine designer Todd Griffith.
