具有高太阳反射性的层次结构被动辐射冷却陶
Kaixin Lin1, Siru Chen1, Yijun Zeng2,3
1School of Energy and Environment, City University of Hong Kong, Hong Kong, China.
Science (New York, N.Y.)
|November 9, 2023
概括
一种新的细胞陶实现了 99.6% 的太阳反射率和高热发射率的被动辐射冷却. 这种耐用材料为广泛的应用提供了显著的节能潜力,特别是在建筑中.
科学领域:
- 材料科学
- 纳米技术
- 热力学
背景情况:
- 被动辐射冷却技术面临成本,兼容性,耐候性和太阳反射方面的局限性.
- 现有的纳米光子结构昂贵且难以整合,而聚合物替代品则降解并反射不良.
研究的目的:
- 开发一种具有更高性能和耐久性的新型被动辐射冷却材料.
- 克服当前辐射冷却技术的局限性
主要方法:
- 设计用于高光散射的细胞陶结构的开发.
- 陶的太阳反射率,热发射率和冷却性能的表征.
- 材料属性的评估,包括颜色,耐候性,机械强度和莱登效应抑制.
主要成果:
- 开发的细胞陶具有近乎完美的太阳反射率 (99.6%) 和高热发射率.
- 在直接阳光下实现连续的环境下冷却,冷却功率超过130W/m2.
- 显示出出色的耐候性,机械强度,并抑制了莱登效应.
结论:
- 细胞陶为被动辐射冷却提供了耐用和多功能解决方案.
- 材料的性能和性能有利于商业化,特别是用于建筑.
- 通过高效的冷却解决方案,该技术具有显著的全球节能潜力.
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