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透明木材用于太阳能吸收器的被动辐射冷却

Farsa Ram^1,2, Martin Höglund¹, Mingna Liao³

¹Wallenberg Wood Science Center, Department of Fiber and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56, 100 44 Stockholm, Sweden.

|September 11, 2025

概括

透明木材生物复合材料涂层提供可持续的被动辐射冷却. 这些环保材料通过散发热量有效降低阳光下的温度,展示了太阳能电池和结构应用的潜力.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
可持续能源可持续能源

背景情况:

被动辐射冷却利用地球大气透明度窗口,实现可持续的热量排放.
降低用于冷却的能源消耗对于环境可持续性至关重要.
开发用于高效辐射冷却的先进材料是一个活跃的研究领域.

研究的目的:

开发透明的木制生物复合材料涂层,用于被动辐射冷却.
研究这些新型涂料的光学和热辐射特性.
在阳光直射下评估涂层的冷却性能.

主要方法:

制造独立的,微米厚的基于木材的生物复合材料涂层.
用氧化 (ZnO) 纳米粒子对木制脚手架的功能化.
在现场乙烯聚合,以提高透明度和机械性能.
可见透明度和中红外辐射率的测量.
在直接阳光下对基质温度降低的评估.

主要成果:

生物复合材料涂层实现了高可见透明度.
观察到异常的中红外辐射率 (约为0.95).
在直接阳光下,ZnO功能化涂层将基板温度降低了约6-7°C.
强化热辐射被确定为主要的冷却机制.
通过乙烯聚合,可以获得更好的机械性能.

结论:

基于木材的透明生物复合材料涂层是被动辐射冷却的可行环保解决方案.
这些材料显示出在太阳能电池和其他暴露在阳光下的结构中减轻过热的巨大潜力.
开发的生物复合材料为传统冷却技术提供了一个具有成本效益的,基于生物的替代方案,具有多样化的应用.

关键词:

大气的窗口是大气的窗口.纤维素纤维素的使用方法被动辐射冷却是一种被动的辐射冷却.热辐射的热辐射乙烯 - 乙烯 - 乙烯 - 乙烯透明的木材透明的木材氧化氧化的使用方法

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