A new type of white paint has the potential to cool buildings and reduce the reliance on air conditioning, say researchers. In a study, the new product was able to reflect 95.5% of sunlight and reduce temperatures by 1.7C compared to the ambient air conditions. The engineers involved say the impact is achieved by adding different-sized particles of calcium carbonate. Buildings of all types are one of the biggest sources of CO2 emissions. According to the World Green Building Council, the lighting, heating and cooling of buildings is responsible for around 28% of global CO2. That’s because the heating and cooling of buildings is mainly powered by coal, oil and gas – In Europe, around 75% of this energy need comes from fossil fuels. A Purdue researcher uses an infrared camera to compare the cooling performance of white paint samples For decades, researchers have been trying to come up with ideas to increase the efficiency of cooling and heating. A number of reflective paints have been developed for the outside of homes and offices that would reflect away sunlight and reduce the temperatures inside. As yet, none of these products have been able to deflect enough of the Sun’s […]

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