粒子-固体过渡架构,用于高效的被动建筑冷却
Xiantong Yan1, Meng Yang2, Wenhui Duan3
1Key Laboratory for Resilient Infrastructures of Coastal Cities (MOE), College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China.
ACS nano
|September 25, 2024
概括
一个新的水泥型辐射冷却使用粒子固体过渡架构来有效地冷却建筑物. 这一创新提高了材料的兼容性,并提供了大量的冷却功率,不需要电力,为实际的被动白天辐射冷却 (PDRC) 应用铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续能源 可持续能源
- 建筑物理 建筑物理
背景情况:
- 建筑冷却对全球能源消耗和碳排放做出了重大贡献.
- 无源日间辐射冷却 (PDRC) 提供了无电的解决方案,但面临着材料兼容性挑战,特别是与水泥材料.
- 现有的PDRC技术往往由于与混凝土等建筑基板的整合不佳而受到影响.
研究的目的:
- 开发一种与建筑基板兼容的新型水泥型辐射冷却材料.
- 克服现有的PDRC材料在集成和耐用性方面的局限性.
- 通过创新的建筑设计,实现建筑物高效的被动冷却.
主要方法:
- 开发一个粒子-固体过渡架构 (PSTA) 用于水泥辐射冷却.
- 采用全无机材料组合,以提供抗紫外线和基板兼容性.
- 界面粘合强度,太阳反射率和中红外发射率的表征.
主要成果:
- 与对照材料相比,PSTA显著提高了界面剪切强度 (0.93 MPa).
- 实现了大约6.6°C的显著的环境下温度下降.
- 在直接太阳辐射下 (∼680 W/m2) 的冷却功率约为92.8 W/m2.
- 该PSTA设计确保了高太阳反射率和强的中红外发射.
结论:
- 拟议的质辐射冷却护甲有效地解决了PDRC应用中的材料不匹配问题.
- PSTA设计提供了一个可扩展和实用的方法,用于将PDRC技术集成到建筑材料中.
- 这一进步促进了对建筑物的被动冷却策略的广泛采用,减少了能源消耗和环境影响.
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