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机械调节的传输电流对流盾用于动态辐射冷却

Qixiang Chen¹, Xuemei Huang², Yuehui Lu³

¹School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, China.

ACS applied materials & interfaces

|April 18, 2024

概括

动态辐射冷却使用可调节的屏蔽来防止过度冷却,节省建筑物的能源. 这项技术调整了传热,在现场测试中表现优于静态材料.

科学领域:

热力工程是热力工程中的一个.
材料科学材料科学材料科学
可持续能源可持续能源

背景情况:

辐射冷却通过8-13微米大气窗口将热量分散到空间,从而节省建筑物的能源.
静态辐射冷却材料在较冷的条件下会导致过度冷却,限制它们全年有效性.
需要动态光谱控制来优化不同季节和时间的辐射冷却性能.

研究的目的:

为了展示使用可调节的传导对流盾 (TTCS) 的动态辐射冷却系统.
研究TTCS在太阳和大气窗口光谱范围中的调制能力.
通过减轻过冷问题来评估节能潜力.

主要方法:

制造和集成一个可调节的传输对流屏蔽 (TTCS).
在太阳光 (28.8-72.9%) 和大气窗口 (27.0-80.5%) 频谱中动态调整TTCS透射率.
现场测量比较TTCS架构与现实条件下的传统辐射冷却.

主要成果:

在TTCS取得显著的调制能力: ΔTsolar = 44.1%和 ΔT8-13μm = 53.5%.
实地测试显示,与静态系统相比,TTCS架构在白天降温0.3°C,晚上升温3.3°C.
动态调制有效地解决了与传统辐射冷却相关的过冷问题.

结论:

开发的TTCS可以实现动态辐射冷却,克服静态材料的局限性.
这项技术通过光谱调制优化热管理,提供了更高的能源节约.
动态辐射冷却为高效的全年建筑气候控制提供了一个有前途的解决方案.

关键词:

一个对流盾的对流盾.动态的辐射冷却.梯度传导度的梯度传导度是什么机械调节的传输率可以调节.过度冷却过度冷却

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