Polymer Film Improves Passive Cooling

Polymer Film Improves Passive Cooling
A new PDMS/aluminum film material could pave the way to effective, passive cooling in buildings.

The polydimethylsiloxane (PDMS)/aluminum film structure created by researchers from the U.S. and KAUST is made up of an aluminum sheet coated precisely with a layer of PDMS resin and heated in an oven. The sheet was then placed in a ‘spectral-selective’ shelter that directs incoming radiation to the sky and improves its radiative cooling ability in crowded urban environments. The material can be produced on the large scale, and offers an affordable and eco-friendly alternative to air conditioners for keeping buildings cool during the day.

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