干旱区生态环境知识资源中心(Arid): Boosting Evaporative Cooling Performance with Microporous Aerogel

Arid

DOI	10.3390/mi14010219
	Boosting Evaporative Cooling Performance with Microporous Aerogel
	Tang, Huajie; Guo, Chenyue; Xu, Qihao; Zhao, Dongliang
通讯作者	Zhao, DL
来源期刊	MICROMACHINES
EISSN	2072-666X
出版年	2023
卷号	14 期号:1
英文摘要	Hydrogel-based evaporative cooling with a low carbon footprint is regarded as a promising technology for thermal regulation. Yet, the efficiency of hydrogel regeneration at night generally mismatches with vapor evaporation during the day, resulting in a limited cooling time span, especially in arid regions. In this work, we propose an efficient approach to improve hydrogel cooling performance, especially the cooling time span, with a bilayer structure, which comprises a bottom hydrogel layer and an upper aerogel layer. The microporous aerogel layer can reduce the saturation vapor density at the hydrogel surface by employing daytime radiative cooling, together with increased convective heat transfer resistance by thermal insulation, thus boosting the duration of evaporative cooling. Specifically, the microstructure of porous aerogel for efficient radiative cooling and vapor transfer is synergistically optimized with a cooling performance model. Results reveal that the proposed structure with a 2-mm-thick SiO2 aerogel can reduce the temperature by 1.4 degrees C, meanwhile extending the evaporative cooling time span by 11 times compared to a single hydrogel layer.
英文关键词	evaporative cooling radiative cooling hydrogel layer microporous aerogel layer
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000927228900001
WOS关键词	WATER
WOS类目	Chemistry, Analytical ; Nanoscience & Nanotechnology ; Instruments & Instrumentation ; Physics, Applied
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Instruments & Instrumentation ; Physics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397842
推荐引用方式 GB/T 7714	Tang, Huajie,Guo, Chenyue,Xu, Qihao,et al. Boosting Evaporative Cooling Performance with Microporous Aerogel[J],2023,14(1).
APA	Tang, Huajie,Guo, Chenyue,Xu, Qihao,&Zhao, Dongliang.(2023).Boosting Evaporative Cooling Performance with Microporous Aerogel.MICROMACHINES,14(1).
MLA	Tang, Huajie,et al."Boosting Evaporative Cooling Performance with Microporous Aerogel".MICROMACHINES 14.1(2023).