用于可扩展的日间被动辐射冷却的层次形态元结构
Shaoning Zeng1, Sijie Pian2, Minyu Su1
1Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China.
Science (New York, N.Y.)
|August 6, 2021
概括
提供有效的个人热管理来应对气候变化. 这些先进的织品提供了显著的冷却效果,
科学领域:
- 材料科学
- 织工程
- 热力学
背景情况:
- 全球气候变化需要先进的个人热管理解决方案.
- 消极辐射冷却提供了一种可持续的方法来减轻热应激.
- 现有的技术往往缺乏广泛采用的性能或可扩展性.
研究的目的:
- 开发和评估用于被动辐射冷却的大规模织物.
- 证明该材料具有有效的个人热管理能力.
- 评估开发的元织物的商业可行性和性能优势.
主要方法:
- 具有层次形态设计的编织元织物的制造.
- 光学性质的表征 (发射率和反射率).
- 机械性能 (强度,防水性,透气性) 的评估.
- 与商业面料相比,对冷却性能进行现场测试.
主要成果:
- 在大气窗口中实现高发射率 (94.5%),在太阳光谱中实现高反射率 (92.4%).
- 这种材料具有理想的机械强度,防水性和适合服装的透气性.
- 实践测试显示其冷却效果比棉织物低约4.8°C.
- 证实了可扩展的工业织制造路线.
结论:
- 已开发的织造元织物在被动辐射冷却方面表现出高性能.
- 这些材料为个人热管理提供了具有成本效益和可扩展性的解决方案.
- 这项技术对智能服装,智能织品和更广泛的气候变化适应策略具有重大优势.
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