A solution-processed radiative cooling glass

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2023-11-09 DOI:10.1126/science.adi2224

Xinpeng Zhao, Tangyuan Li, Hua Xie, He Liu, Lingzhe Wang, Yurui Qu, Stephanie C. Li, Shufeng Liu, Alexandra H. Brozena, Zongfu Yu, Jelena Srebric, Liangbing Hu

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引用次数: 0

Abstract

Passive daytime radiative cooling materials could reduce the energy needed for building cooling up to 60% by reflecting sunlight and emitting long-wave infrared (LWIR) radiation into the cold Universe (~3 kelvin). However, developing passive cooling structures that are both practical to manufacture and apply while also displaying long-term environmental stability is challenging. We developed a randomized photonic composite consisting of a microporous glass framework that features selective LWIR emission along with relatively high solar reflectance and aluminum oxide particles that strongly scatter sunlight and prevent densification of the porous structure during manufacturing. This microporous glass coating enables a temperature drop of ~3.5° and 4°C even under high-humidity conditions (up to 80%) during midday and nighttime, respectively. This radiative “cooling glass” coating maintains high solar reflectance even when exposed to harsh conditions, including water, ultraviolet radiation, soiling, and high temperatures.

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一种溶液处理的辐射冷却玻璃。

被动式日间辐射冷却材料可以通过反射阳光并向寒冷的宇宙中发射长波红外辐射（约3开尔文），将建筑物冷却所需的能量减少60%。然而，开发既能制造和应用，又能显示长期环境稳定性的被动冷却结构具有挑战性。我们开发了一种随机光子复合材料，该复合材料由微孔玻璃框架组成，该框架具有选择性LWIR发射以及相对较高的太阳反射率和氧化铝颗粒，氧化铝颗粒强烈散射阳光并防止制造过程中多孔结构的致密化。即使在高湿度条件下（高达80%），这种微孔玻璃涂层也能在中午和夜间分别使温度下降约3.5°C和4°C。这种辐射“冷却玻璃”涂层即使暴露在恶劣的条件下，也能保持高的太阳反射率，包括水、紫外线辐射、污垢和高温。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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