基于Alcogel的界面蒸发用于垂直热二极管结构的智能墙壁,采用辐射冷却
Jianchen Han1, Xiaohan Zhang1,2, Yi Wang3
1Sustainable Energy and Environment Thrust, Function Hub, The Hong Kong University of Science and Technology (Guangzhou), Nansha, Guangzhou, Guangdong, 511400, China.
Advanced materials (Deerfield Beach, Fla.)
|March 28, 2025
概括
这项研究引入了一个智能墙,通过控制传热方向来被动调节建筑温度. 这种适应气候的技术可以提高冬季的被动加热和夏季的冷却,大大降低了能源消耗.
科学领域:
- 建筑科学 建筑科学
- 材料科学 材料科学 材料科学
- 热力学是一种热力学.
背景情况:
- 传统的建筑外具有固定的热物理特性,限制了它们在被动温度调节方面的有效性.
- 对于能源效率来说,需要气候适应性建筑包裹,可以提高冬季的加热和夏季的冷却,这对于能源效率至关重要.
研究的目的:
- 调查实现单向热传递在具有气候适应性热物理性质的建筑外中的可行性.
- 开发和演示一种能够被动调节温度的新型建筑外.
主要方法:
- 使用毛细管效应在界面蒸发和热二极管结构用于单向传热.
- 制造基于蒸发凝结的智能墙壁 (ECSW),用于自发和连续的冷却/加热.
- 将辐射冷却和光热功能集成到ECSW设计中.
主要成果:
- 在ECSW证明了适应气候的传热系数,从3.33到大约30W m-2 K-1.1.
- 通过辐射冷却 (5°C冷却表面) 实现了5.44 W m−2的传热,在太阳照明下 (387.68 W m−2) 实现了太阳照明 (1000 W m−2).
- 模拟结果显示,昆明的建筑能耗节约率为66.47%.
结论:
- 通过界面蒸发成功展示了使用自然加热/冷却源的垂直热二极管建筑包裹.
- 开发的ECSW提供了低成本的被动温度调节,稳定的性能和显著的节能潜力.
- 这项技术为更智能,更可持续的建筑铺平了道路.
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