Jan 28, 2023Why ultra-white paint could help fight climate changeTIMESOFINDIA.COM
White paint reflects sunlight
According to a report, Scientists at Purdue University in the United States say they’ve created a new paint that’s so ultra-white that it reflects 98.1% sunlight.befunky
The cooling power
According to the report, 1,000 square feet painted with white colour could have a cooling power of 10 kilowatts.befunky
Comparison to air conditioners
Xiulin Ruan, a Purdue professor of mechanical engineering, told an online website that the paint is “more powerful than the central air conditioners used by most houses.”befunky
White paint vs new paint
Commercial white paint gets warmer rather than cooler. This new paint repels infrared heat from a surface and reflects up to 98.1% of sunlight.befunky
What makes it reflective
It reflects because of a chemical compound called barium sulfate that is used to make photographic paper white.befunky
An old hack
Painting walls and roofs white to deflect heat has been done for centuries.befunky
Other surfaces
The paint can also be used on other surfaces, including vehicles like cars and airplanes, as per the report.befunky
The trial
Some streets and pavements in Los Angeles, California have been painted with a white coating. This resulted in the streets being cooler (5.5C - 8.3C) than others.befunky