The whitest paint in the world that cools buildings and helps the environment

The world’s whitest paint can cool the exterior of planes, cars, trains or buildings and counteract climate change.

Author: Clara Salzano

The world’s whitest paint on buildings

Can a paint counteract climate change? A group of engineers from Purdue University in Indiana, in the United States, are convinced by the whitest ink in the world. in 2021 Xiulin Ruanmechanical engineering professor at Purdue University, had invented the whitest paint in the world which, thanks to some modifications, became thinner and perfect for coating planes, cars or buildings in order to cool down their exteriors and reduce the use of internal cooling systems that pollute the environment.

Xiulin Ruan, a professor of mechanical engineering at Purdue University, invented the ultra white ink
Xiulin Ruan, a professor of mechanical engineering at Purdue University, invented the ultra white ink

The ultra white ink is composed of barium sulfate nanoparticlesthat reflect the 98.1% of sunlight and cool external surfaces by more than 4.5 degrees. For this, however, it was necessary to apply a 400 micron ink layer which is indifferent in the case of a stationary surface, such as the roof of a building, but this weight may be relevant in the case of elements that require a specific weight and therefore a lighter coat of paint.

One coat of ultra white paint
One coat of ultra white paint

The innovation made to the world’s whitest ink by Professor Ruan’s team allows you to use a 150 micron ink layer who has the same capacity for reflection sunlight and cools buildings to limit the use of air conditioning and protect the environment. In addition, this thin, ultra-white ink explains George Chiuprofessor of mechanical engineering at Purdue”has the potential to cool the exterior of planes, cars or trains. A plane sitting on the runway on a hot summer day will not need to use the air conditioning as hard to cool the interior, saving large amounts of energy.“Applications of the world’s whitest paint can be countless and can even reach spacecraft.

Source: Fan Page IT

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