Âé¶¹´«Ã½

Cool colours, man

By Duncan Graham-Rowe

21 April 2001

PAINT that cools your home in the heat of the summer and warms it up in
winter has been developed by researchers in China. Not only will the paint
reduce your heating bills, it will also change the colour of your home to match
the season.

Developed by Yiping Ma and his colleagues at Tongji University in Shanghai,
the coating absorbs heat from the Sun when the temperature drops below 20
°C, helping to warm the building. But when the temperature rises above 20
°C the coating automatically starts to reflect sunlight to keep the building
cool.

The coating also…

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