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Air pollution, gone with the wind
Date:11/1/2012

buildings that pollution was most concentrated."

Their findings show that the process by which air pollution spreads from one building's exhaust stack to another's intake is affected by the height and spacing between buildings, something that can be optimized by architects and engineers as new towers are constructed.

What does this mean for the future of downtown buildings? "We came up with three main guidelines for the placement of stack and intake in order to minimize the amount of air pollution that makes its way into downwind buildings," says Stathopoulos.

First, intake vents on buildings downwind of a polluter need to be placed upwind of that building's stack, and closer to its more sheltered wall. Second, air intakes should not be placed on rooftop locations downwind of a low stack and the protected wall of the emitting building. Lastly, increased spacing between buildings can reduce the possibility that pollutants from one will be re-ingested by another.

"While our research may not reduce the amount of outdoor pollution in our cities," explains Stathopoulos, "it can certainly help ensure that this same dirty air is not re-circulated indoors."


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Contact: Clea Desjardins
clea.desjardins@concordia.ca
514-848-2424 x5068
Concordia University
Source:Eurekalert  

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