干旱区生态环境知识资源中心(Arid): Enhancement of Condensation Heat Transfer, Anti-Frosting and Water Harvesting by Hybrid Wettability Coating

Arid

DOI	10.1142/S1793292021500867
	Enhancement of Condensation Heat Transfer, Anti-Frosting and Water Harvesting by Hybrid Wettability Coating
	Chen, Xintao; Wu, Xian; Li, Fang; Zhao, Xiaofeng; Wang, Shanlin
通讯作者	Wang, SL (corresponding author), Southwest Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Sichuan, Peoples R China.
来源期刊	NANO
ISSN	1793-2920
EISSN	1793-7094
出版年	2021
卷号	16 期号:8
英文摘要	The hybrid wettability coatings have been designed by spraying superamphiphobic SiO2 nano-powder and superamphiphilic gypsum micro-powder with different mass ratio (MR). The condensation heat transfer efficiency, frosting delayed time and water harvesting rate can promote to about 131.50% (MR = 1:0.5), 134.74% (MR = 1:0.5) and 135.62% (MR = 1:1), respectively, although their macroscopical wettability will gradually reduce with the increase in MR. This paper provides substantial insights into the fabrication of efficient superhydrophilic-superhydrophobic hybrid wettability surfaces for condensation heat transfer, anti-frosting and water harvesting applications. Hydrophilic-hydrophobic hybrid wettability structures, inspired by desert beetles, have been widely designed to enhance the dewdrops' migration under subcooled or/and high-humidity environment. However, it is still a challenge to regulate the graded distribution of the hydrophilic micro-regions for condensation applications. In this paper, we design a simple spray method to prepare the superamphiphilic-superamphiphobic hybrid wettability coatings by controlling the mass ratio (MR) of superamphiphobic SiO2 nano-powder and superamphiphilic gypsum micro-powder. We compare the macroscopical wettability, condensation heat transfer efficiency, frosting delayed time and water harvesting rate to demonstrate the unique advantage of hybrid wettability structures. The results show that the condensation heat transfer efficiency, frosting delayed time and water harvesting rate can be respectively promoted to about 131.50% (MR=1:0.5), 134.74% (MR=1:0.5) and 135.62% (MR=1:1), although their macroscopical wettability will gradually reduce with the MR increase. This work will provide substantial insights into the fabrication of efficient superhydrophilic-superhydrophobic hybrid wettability surfaces for condensation heat transfer, anti-frosting and water harvesting applications.
英文关键词	Hybrid wettability coating condensation heat transfer anti-frosting water harvesting
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000688056000008
WOS关键词	SUPERHYDROPHOBIC SURFACES ; NUMERICAL-SIMULATION ; FIN SURFACES ; FABRICATION ; PERFORMANCE ; BEETLE ; RETENTION ; PUMP
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364206
作者单位	[Chen, Xintao; Wu, Xian; Li, Fang; Zhao, Xiaofeng; Wang, Shanlin] Southwest Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Chen, Xintao,Wu, Xian,Li, Fang,et al. Enhancement of Condensation Heat Transfer, Anti-Frosting and Water Harvesting by Hybrid Wettability Coating[J],2021,16(8).
APA	Chen, Xintao,Wu, Xian,Li, Fang,Zhao, Xiaofeng,&Wang, Shanlin.(2021).Enhancement of Condensation Heat Transfer, Anti-Frosting and Water Harvesting by Hybrid Wettability Coating.NANO,16(8).
MLA	Chen, Xintao,et al."Enhancement of Condensation Heat Transfer, Anti-Frosting and Water Harvesting by Hybrid Wettability Coating".NANO 16.8(2021).