通过合理设计热光学和传质特性，使被动冷却涂料成为可能

IF 45.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2025-06-05 DOI:10.1126/science.adt3372

Jipeng Fei, Xuan Zhang, Di Han, Yue Lei, Fei Xie, Kai Zhou, See-Wee Koh, Junyu Ge, Hao Zhou, Xingli Wang, Xinghui Wu, Jun-Yan Tan, Yuheng Gu, Yongping Long, Zhi Hui Koh, Su Wang, Panwei Du, Tangwei Mi, Bing-Feng Ng, Lili Cai, Chi Feng, Qiaoqiang Gan, Hong Li

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引用次数: 0

摘要

综合辐射和蒸发冷却显示了增强被动冷却的希望，但耐用的自固化综合冷却涂料仍然不发达。我们设计了一种改进的胶凝结构，具有先进的热光学和传质性能，在保证耐用性、机械强度和广泛粘附性的同时提高冷却能力。该涂料达到88 - 92%的太阳反射率（取决于湿润程度），95%的大气窗口发射率，~30%的保水性和自我补充性能，即使在潮湿情况下也能保持稳定的光学性能。在新加坡热带地区进行的现场测试表明，与商用白色涂料相比，它具有优越的冷却性能。在理论模型的支持下，试点规模的示范突出了在不同天气条件下持续的电力节约。通过利用可持续的水蒸发和热辐射，这种涂料为减轻城市热岛效应提供了一个实用和长期的解决方案。

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Passive cooling paint enabled by rational design of thermal-optical and mass transfer properties

Integrating radiative and evaporative cooling shows promise for enhancing passive cooling, but durable self-curing integrated cooling paints remain underdeveloped. We designed a modified cementitious structure with advanced thermal-optical and mass transfer properties, boosting cooling power while ensuring durability, mechanical strength, and broad adhesion. The paint achieves 88 to 92% solar reflectance (depending on wetting), 95% atmospheric window emittance, ~30% water retention, and self-replenishing properties, maintaining stable optical performance even when wet. Field tests in tropical Singapore demonstrated superior cooling performance compared with commercial white paints. Pilot-scale demonstrations highlighted consistent electricity savings under varying weather conditions, supported by theoretical modeling. By leveraging sustainable water evaporation and thermal radiation, this paint offers a practical and long-term solution for mitigating the urban heat island effect.

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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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