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粘合性水凝涂料用于通过辐射合蒸发冷却的被动散热
Qin Ye1, Daohui Chen1, Ziying Zhao1
1School of Energy Science and Engineering, Central South University, Changsha, 430001, China.
Small (Weinheim an der Bergstrasse, Germany)
|March 10, 2025
概括
这项研究引入了一种用于被动冷却的新型水凝涂料,它结合了辐射和蒸发冷却 (REC). 这种创新材料提供了增强的散热,即使在具有挑战性的环境条件下,为有效的户外冷却应用.
科学领域:
- 材料科学 材料科学 材料科学
- 热力工程是热力工程中的一个.
- 可持续能源 可持续能源
背景情况:
- 像辐射冷却 (RC) 和蒸发冷却 (EC) 这样的被动冷却技术在无能冷却方面越来越受欢迎.
- 单模式被动冷却方法由于阳光和湿度等环境因素而面临限制,限制了其性能.
- 现有的方法在不同的条件下难以保持一致的冷却,需要先进的解决方案.
研究的目的:
- 开发一种具有多模式被动冷却能力的粘合性水凝涂料,以提高散热效率.
- 通过整合辐射和蒸发冷却策略来克服单模式被动冷却的局限性.
- 通过捕获水分来实现冷却容量的自我补充.
主要方法:
- 设计和合成具有高太阳反射率 (0.91) 和热发射率 (0.94) 的粘合性水凝涂料.
- 整合日间/高工作负载的辐射合蒸发冷却 (REC) 和夜间/低工作负载的RC辅助吸附.
- 将水凝涂料涂在3DW形基板上,以优化冷却性能.
主要成果:
- 与平面相比,在W形基板上的REC涂料表现出优越的被动散热.
- 在100 W m−2下降了5.4°C,在400 W m−2下降了11.4°C.
- 该材料表现出有效的吸收水分以自我补充,增强长期冷却潜力.
结论:
- 开发的粘合液凝涂料有效地整合了多种被动冷却策略,以获得卓越的散热.
- 使用3DW形基板的结构设计显著提高了冷却性能.
- 这种创新材料显示了户外被动冷却应用的巨大潜力,解决了当前技术的局限性.
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