具有合理设计的光流体性质的水凝中的超高被动冷却功率
Jipeng Fei1, Di Han1, Xuan Zhang2
1School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore.
Nano letters
|December 4, 2023
概括
这项研究介绍了一种基于水凝的新型被动冷却器,可以在热带气候下实现稳定的下环境冷却. 它提供比传统的辐射冷却器显著更高的冷却功率,即使在强烈的太阳辐射下.
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:
- 在热带气候下,由于高湿度,强大大气辐射,降雨和强烈的太阳辐射,辐射冷却性能显著下降.
- 现有的辐射冷却技术在恶劣的热带条件下,难以在白天实现有效的环境下冷却.
研究的目的:
- 开发一个集成的被动冷却策略,使用具有光流体性质的水凝,在热带地区有效地冷却下环境.
- 为了研究辐射和蒸发冷却机制在不同水分和湿度水平下的相互作用.
主要方法:
- 开发一种基于水凝的被动冷却器,集成辐射和蒸发冷却策略.
- 在现场研究,分析不同水分水平和环境湿度下的辐射冷却性能.
- 在热带气候典型的强烈太阳辐射条件下的性能评估.
主要成果:
- 即使在太阳辐射峰值 (高达1200W/m2) 下,也证明了稳定的下环境冷却 (4-8°C).
- 达到约350W/m2的超高冷却功率,比热带环境中的传统辐射冷却器大6-10倍.
- 量化了基于水合和湿度的辐射和蒸发冷却之间的相互作用.
结论:
- 集成的被动冷却器有效地克服了传统辐射冷却在潮湿,高太阳辐射热带气候的局限性.
- 开发的水凝冷却器提供了一个有前途的解决方案,用于在具有挑战性的环境中高效的白天冷却.
- 获得的洞察力为设计可适应各种气候条件的先进综合制冷系统提供了基础.
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