ULTRA -WHITE PAINT CAN REPLACE THE USE OF AIR CONDITIONING

Do you also feel cooler if you wear a white T-shirt on a hot and sunny day, then if you wear a black shirt? That’s what Aaswath Raman, researcher at the University of California taught as well. That’s why he have managed to paint a roof and wall paint that is Ultra white.

( Sources:internet )

The weatherproof paint reflects 98 percent of sunlight and is designed to keep homes cool in an increasingly hot climate in an inexpensive and energy-efficient manner.

( Sources:internet )

Together with his colleagues from Columbia University in New York, Raman conducted tests with a newly designed paint. Applied on the outside of buildings which gives a strong cooling effect, making the indoor temperature even lower than the ambient temperature.

The secret of the paint is that it not only reflects visible light, thereby preventing it from converting energy into heat, but also direct heat radiation from the sun and other objects - the infrared part of sunlight. We cannot see this light with our eyes, but we can feel it with our skin.

Regular white paint contains titanium oxide and reflects about 85 percent of the visible sunlight. However, this paint absorbs infrared radiation, as well as ultraviolet radiation - which also comes from the sun. The maximum reflective paint is based on the mineral barite and also contains Teflon.

H1.3: Effect of super white paint (labeled E1 and E3) compared to existing reflective paint (E2). (Source: Jyptirmoy Mandal)

The findings were published in the journal Joule. The researchers hope that their paint can offer an alternative to the growing use of air conditioners.

Finnish research last year showed that air conditioners worldwide are already using almost as much power as is generated by all the solar panels combined - and that this energy demand could grow by as much as 35 times in this increasingly warmer century, also driven by growing prosperity and population growth in warm, sunny areas.

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