Business Scientist invents the 'whitest paint in the world' to...

Scientist invents the ‘whitest paint in the world’ to cool down your home


A scientist at Purdue University invented a white paint that can cool buildings and prevent global temperatures from rising.

Xiulin Ruan, a professor of mechanical engineering, created white paint that reflects 98% of the sun’s rays away from the Earth’s surface. When the paint is applied to the roof of structures, the paint cools surfaces by as much as eight degrees during the day and as much as 19 degrees cooler at night, according to a report in The New York Times.

“If you were to use this paint to cover a roof area of ​​about 1,000 square feet [93 m2], we estimate that you could get a cooling capacity of up to 10 kilowatts. That’s more powerful than the air conditioners used by most homes,” Ruan said.

Scientists consider paint to be transformative for cooling the planet and reducing electricity consumption, as buildings with this type of white paint require less air conditioning.

And Ruan doesn’t want to stop at buildings. Last year he announced that he also invented a version of this paint for vehicles.

Related: Go, Go, Away! Climate change is driving more baseball home runs

World record holder

How white is the paint? In 2021, the Guinness Book of World Records named it the whitest paint on earth. But Ruan Ruan told the Times that was not the goal.

“We weren’t really trying to develop the whitest paint in the world,” said Dr. Ruan. “We wanted to help with climate change, and now it’s more of a crisis and it’s getting worse. We wanted to see if it was possible to help save energy and cool the Earth at the same time.”

Unfortunately, the paint won’t be available for sale for another year or so, as researchers work to improve its durability and resistance to dirt.

But with the planet recording record temperatures almost daily, the need for a global paint job couldn’t come soon enough.

Shreya Christina
Shreya has been with for 3 years, writing copy for client websites, blog posts, EDMs and other mediums to engage readers and encourage action. By collaborating with clients, our SEO manager and the wider team, Shreya seeks to understand an audience before creating memorable, persuasive copy.

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