Study on the cooling energy saving potential of a novel radiative cooling paints in building application

Passive radiative cooling technology has attracted much attention for its ability to obtain “free” by heat exchange between objects on earth and outer space through atmosphere window. However, most of the existing materials are prepared in form thin films, which limits application building since films lacking scalability various shapes. In this paper, we a paint (RCP) with acrylic resin as substrate, mixed ploymethylpentene (TPX), silicon dioxide (SiO 2 ). The emissivity 0.87 reflectively 0.92 is achieved window (i.e., 8-13 μm) solar spectrum 0.2-2.5 μm), respectively. To further indicate potential proposed RCP applications, two-floor single-family house modeled using EnergyPlus. energy saving applying different surfaces envelope analyzed, influence factors discussed detail. results show that significantly can be buildings painted all roofs walls) annual consumption decreased 15.8-31.2% comparing typical walls located at five climate zones China.