Use this simple, inexpensive trick to lower your building’s temperature by 36 degrees Fahrenheit

The warming effect of asphalt and concrete high-rise buildings is causing city temperatures to soar

On July 12, 2023, a runner cooled down with water in Skopje, North Macedonia. ——Reuters

Summers are becoming increasingly dangerous, especially in cities, where soaring temperatures are exacerbated by the warming effects of asphalt and concrete high-rise buildings, British Broadcasting Corporation the report said.

However, there is a simple and inexpensive way to cool urban landscapes with large buildings: retroreflectors.

A study published in the journal natural city Monday showed temperatures dropped by as much as 36 degrees Fahrenheit in buildings with retroreflective materials installed.

Elie Bou-Zeid, a co-author of the study and a professor of civil and environmental engineering at Princeton University, said lowering the temperature of buildings is “very, very important” for pedestrians on the street “because these walls radiate a lot of heat to you.”

He added that cooling these surfaces by 36 degrees “makes you feel significantly more comfortable. It’s almost like being under the shade of a tree.”

Because of the way they are built, cities are much warmer than the surrounding suburbs and rural areas. Tall buildings, dark roofs, asphalt and concrete absorb the sun’s rays and reflect its energy back into the environment as heat, the so-called urban heat island effect.

Urban designers have begun implementing simple solutions to counteract urban heat, including painting roads white, planting more trees and building green roofs. But researchers say using retroreflective materials will have a more powerful cooling effect.

Retroreflectors utilize a simple concept: three cube-corner shaped mirrors that reflect light back in the direction of its origin. The same effect can be achieved using a bowl-shaped mirror.

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By Ali Raza

I am a dedicated and skilled News Content Writer with a passion for delivering accurate and engaging stories to a diverse audience. With a solid background in journalism and a keen eye for detail, I bring a commitment to excellence and a deep understanding of the evolving media landscape.

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