Fig. 4: The real-world outdoor durability test, demonstration of versatility, scalability and proof-of-concept. | Nature Communications

Fig. 4: The real-world outdoor durability test, demonstration of versatility, scalability and proof-of-concept.

From: Durable radiative cooling against environmental aging

Fig. 4: The real-world outdoor durability test, demonstration of versatility, scalability and proof-of-concept.The alternative text for this image may have been generated using AI.

a Photographs and b the optical and wetting properties of the AACP and white paint coating after 6 months of outdoor exposure (Chengdu, 30°40'36''N, 104°6'28''E, from April 25th to November 10th 2021). We studied the optical and wetting properties of the coatings against environmental aging by dividing the coating slide (5 × 15 cm) into three regions: unexposed/(exposed, washed)/(exposed, unwashed). c Demonstration of spray coating and d AACP coated outdoor wall tiles (40 × 80 cm). Inset is an infrared image showing the temperature drop of the AACP coated tile (October 29th, 2021, Guangzhou, China). e AACP coated tin box (47 × 32 × 32 cm) served as a proof-of-concept, demonstrating SDRC. The averaged Isolar was 945 W m−2 (peak Isolar > 1000 W m−2). Insets show the temperature measurement setup and visual appearance of the tin boxes. For AACP coated tin box, ΔT  ≈ −5.2 °C (May 25th, 2021, Chengdu).

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