Purdue University scientists created the whitest paint in the world, such a white paint that reflects 98.1% of solar radiation while emitting infrared heat. The idea was to make a painting that would reflect sunlight away from a building.
The paint is so white that it could possibly reduce or even eliminate the need for air conditioning.
In a statement released by Purdue University, Xiulin Ruan, professor of mechanical engineering at the university, said, “When we started this project about seven years ago, we had in mind energy savings and fight against climate change.
Guinness World Records ranked the painting as the whitest ever.
So why did scientists create such a painting? The main objective was to slow down global warming.
In a published paper, researchers have proven that paint absorbs less heat from the sun than it emits. Using paint to cover approximately 1,000 square feet of roof area could result in 10 kilowatts of cooling power.
“It’s more powerful than the air conditioners used by most homes,” Ruan said.
One of the characteristics that make this paint ultra-white is a very high concentration of – barium sulfate – a chemical compound called also used in photo paper and cosmetics –
Purdue filed for a patent on the paint and said the university had partnered with a company to make the ultra-white paint commercially available.
To find out more, click here.