Xiulin Ruan, a Purdue University professor of mechanical engineering, holds up his lab’s sample of the whitest paint on record. Jared Pike/Purdue University
At noon on a sunny summer day, the temperature of a conventional dark-colored flat roof can reach 150 degrees Fahrenheit (65 degrees Celsius), according to the U.S. Department of Energy. That heat will warm the inside of a building or a house as well, making it necessary to use air conditioning an energy expenditure that in turn often requires burning fossil fuels at electrical power plants, whose emissions contribute to the progression of climate change. It s a bedeviling problem that might be easily solved, if we only had roofs that reflected solar energy back into the sky, instead of absorbing it.
The whitest paint is here – and it’s the coolest. Literally.
Note to journalists: For a copy of the paper, please contact Kayla Wiles, Purdue News Service, at wiles5@purdue.edu or 765-494-2432. Photos of the whitest paint are available via Google Drive. Journalists visiting campus should follow visitor health guidelines.
Xiulin Ruan, a Purdue University professor of mechanical engineering, holds up his lab’s sample of the whitest paint on record. (Purdue University/Jared Pike)
New paint formulation could help buildings rely less on air conditioning
WEST LAFAYETTE, Ind. In an effort to curb global warming, Purdue University engineers have created the whitest paint yet. Coating buildings with this paint may one day cool them off enough to reduce the need for air conditioning, the researchers say.
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