Will this common thing eliminate the need for air conditioners?

Sunday, September 19, 2021

Paint is used on the walls of every house in the world, but can the need for an air conditioner (AC) be eliminated with this common thing?

That's what American scientists think, and they've developed the whiteest paint they think has the potential to gradually reduce or eliminate the need for air conditioning.

The paint, developed by Purdue University, was developed a few months ago and has been the focus of media attention around the world. But now the paint has made it into the Guinness Book of World Records and has been called the whitest paint ever. By the way, the scientists did not develop this paint to set a world record, but their goal is to reduce the rising global temperature.

"When we started this project seven years ago, we had in mind the goal of preventing climate change and saving energy," said Sheolin Rowan, a professor of mechanical engineering at the University of Purdue.

According to the researchers, they wanted to create a paint that could turn the light off the wall of the building and prevent it from overheating. Paint needed to be the whitest to be able to do that. According to the university, the paint can reflect 98.1% solar radiation while also emitting infrared heat. Because this paint absorbs less sunlight than it emits, the surface beneath it cools without electricity.

Covering an area of ​​one thousand square feet with this white paint, it cooled so much that it can be considered equal to 10 kilowatts of power. The researchers said that this is a more powerful paint than air conditioners used in most homes. Most paints that emit heat reflect 80 to 90 percent of the sun's light, but they do not cool the surface beneath them.

But two things are unique in the paint produced by the University of Purdue, one is the high concentration of the chemical compound brim sulfate and the other is the particles of different volumes of brim asphalt.

Researchers have also partnered with a company to bring this white paint to market. Some time ago, the results of a study on this paint came to light in which researchers said that you need an air conditioner because sunlight heats the ceiling and walls and increases the feeling of warmth inside the house. Goes

He said the paint would eliminate the need for air conditioners as it would reflect sunlight and reduce indoor temperatures. This paint looks purple in the infrared image, which indicates that it stays cool even in direct sunlight. The research team hopes that in the future the paint will be used on homes, roofs, cars, and highways, which will help reduce the need for air conditioners to use a lot of energy in buildings.

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