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垂直双面架构中的滑表面用于辐射冷却和大气水收集
Shakeel Ahmad1, Abdul Rahim Siddiqui1, Kaijie Yang1
1Sustainable Photonics Energy Research Laboratory, Material Science Engineering, Division of Physical Sciences and Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
Advanced materials (Deerfield Beach, Fla.)
|September 6, 2024
概括
这项研究引入了一种新的滑表面涂层,用于增强大气水收集 (AWH). 新设计将冷却功率增加一倍,并使无需外部能源的被动收集水成为可能,提供了分散的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 热力学是一种热力学.
- 环境工程 环境工程
背景情况:
- 辐射冷却使得大气中的水可以在没有能量的情况下收集 (AWH).
- 传统的冷凝器具有较低的冷却功率,需要积极收集冷凝物.
- 滴滴在表面上固定阻碍了有效的收集水.
研究的目的:
- 开发一个高效的,被动的大气水收集系统.
- 为了克服传统的AWH冷凝器的局限性.
- 展示一个可扩展和分散的收集水的方法.
主要方法:
- 在双面冷凝器上引入滑表面 (LS) 涂层 (含油的多甲基氧弹性体).
- 使用垂直双面架构来增强冷却.
- 在各种户外和室内环境中测试系统.
主要成果:
- 该LS涂层将本地冷却功率增加一倍,并消除了接触线固定.
- 在户外,被动收集水率达到21 g m−2 h−1,超过了超水表面.
- 在室内达到理论凝结极限的87%以90%的被动收集.
结论:
- LS涂层为被动大气水收集提供了强大而高效的方法.
- 这种方法提供了一个分散的AWH解决方案,消除了对管道和外部能源的需求.
- 这项技术显示了水资源稀缺地区的巨大潜力.
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