紫外线耐用和可回收的辐射冷却覆盖,用于高效的建筑节能
Shanshan Song1, Congyu Hou2, An Yang1
1Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin, Heilongjiang 150040, P. R. China. ymsong@nefu.edu.cn.
本研究介绍了一种可回收,耐紫外线的聚合物薄膜,用于被动辐射冷却 (PRC). 这种新材料可以大大节省建筑能源,并通过增强的热管理来促进可持续建筑.
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
- 建筑技术 建筑技术 建筑技术
背景情况:
- 被动辐射冷却 (PRC) 是建筑能效的关键零能源技术.
- 目前的基于聚合物的PRC材料具有较差的紫外线耐用性和有限的可回收性,阻碍了广泛采用.
- 开发先进的中国材料对于降低全球建筑能耗至关重要.
研究的目的:
- 开发一种可回收的基于聚合物的多孔辐射冷却膜,具有增强的紫外线耐用性.
- 评估片在被动辐射冷却中的性能及其在建筑节能方面的潜力.
- 为了研究材料的抗紫外线和可回收性机制.
主要方法:
- 制造可回收聚合物基础的多孔辐射冷却膜.
- 在太阳辐射下对膜的辐射冷却性能的描述.
- 通过延长暴露测试来评估紫外线耐用性.
- 使用非溶剂诱导相分离 (NIPS) 方法评估可回收性.
主要成果:
- 开发的薄膜在510Wm-2时实现了10.6°C的辐射冷却能力.
- 片表现出优异的紫外线耐用性,在240小时的紫外线照射后保持高太阳反射率.
- 计算的节能表明,冷却能耗可能减少31%.
- 该材料通过简单的NIPS方法被证明是循环可用的.
结论:
- 成功开发了一种新的可回收和耐紫外线的基于聚合物的多孔辐射冷却膜.
- 该材料为可持续的建筑能源管理提供了一个有希望的解决方案.
- 这项研究为先进的,环保的热管理材料铺平了道路.
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