Wednesday, August 26, 2009

What Makes a Skyscraper Green?

These days, it seems like skyscrapers are in a race to be the greenest, as well as the tallest. New York City's Hearst Tower is largely made from recycled steel and uses rainwater for 50 percent of its needs. China's 71 story Pearl River Tower (pictured below) will soon use wind, sun and geothermal energy to power itself, and even the Empire State Building, one of the world's oldest skyscrapers, is currently undergoing an energy retrofit facelift to stay in the race.



To be the greenest skyscraper on the block, designers are incorporating cutting edge energy and water saving technologies like helical wind turbine technology, thousands of solar panels, sunlight-sensing LED lights, rainwater catchment systems and even seawater-powered air conditioning. One building awaiting construction is the Burj al Taqa "Energy Tower" (interior pictured below). With a 197-foot roof turbine and 161,459 square feet of solar panels, this 68 story skyscraper, if built, would create all its own power on site.

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