<
https://www.theguardian.com/environment/2021/apr/15/whitest-ever-paint-could-help-cool-heating-earth-study-shows>
"The whitest-ever paint has been produced by academic researchers, with the aim
of boosting the cooling of buildings and tackling the climate crisis.
The new paint reflects 98% of sunlight as well as radiating infrared heat
through the atmosphere into space. In tests, it cooled surfaces by 4.5C below
the ambient temperature, even in strong sunlight. The researchers said the
paint could be on the market in one or two years.
White-painted roofs have been used to cool buildings for centuries. As global
heating pushes temperatures up, the technique is also being used on modern city
buildings, such as in Ahmedabad in India and New York City in the US.
Currently available reflective white paints are far better than dark roofing
materials, but only reflect 80-90% of sunlight and absorb UV light. This means
they cannot cool surfaces below ambient temperatures. The new paint does this,
leading to less need for air conditioning and the carbon emissions they
produce, which are rising rapidly."
Via Glyn Moody, who wrote: "clever, if obvious"
Share and enjoy,
*** Xanni ***
--
mailto:xanni@xanadu.net Andrew Pam
http://xanadu.com.au/ Chief Scientist, Xanadu
https://glasswings.com.au/ Partner, Glass Wings
https://sericyb.com.au/ Manager, Serious Cybernetics
