干旱区生态环境知识资源中心(Arid): Optimization of random silica-polymethylpentene (TPX) radiative coolers towards substantial cooling capacity

Arid

DOI	10.1016/j.solmat.2021.111419
	Optimization of random silica-polymethylpentene (TPX) radiative coolers towards substantial cooling capacity
	Feng, Jie; Gao, Kai; Jiang, Yue; Ulpiani, Giulia; Krajcic, Djordje; Paolini, Riccardo; Ranzi, Gianluca; Santamouris, Mattheos
通讯作者	Feng, J (corresponding author), Univ New South Wales, Sch Built Environm, Sydney, NSW 2052, Australia.
来源期刊	SOLAR ENERGY MATERIALS AND SOLAR CELLS
ISSN	0927-0248
EISSN	1879-3398
出版年	2022
卷号	234
英文摘要	In the context of global warming, radiative coolers with high solar reflectance and strong emissivity in the atmospheric window can cool the substrate as well as the ambient air. Silica at its nano or micro-scale being randomly dispersed into a uniform transparent polymer can form scalable radiative coolers for large-scale application. Promising cooling performance has been reported for silica-polymers compared with conventional cooling materials, but their performance can be largely influenced by various fabrication parameters. So far, how fabrication parameters influence the emissivity and the cooling performance has not been experimentally demonstrated and the cooling capacity of silica-polymers reported was not substantial compared to other superior radiative coolers. In this work, random silica-polymer has been optimized experimentally. Lab measurement and experimental testing of six fabricated silica-polymers under subtropical and desert climates indicated that due to the complexity of the thermo-radiative balance, high emissivity and strong selectivity are both indispensable in the production of high cooling power. If combined with superior reflectors with higher solar reflectance and especially the emissivity in 8-13 mu m enhancing the heat dissipation ability, substantial cooling capacity can be achieved: under the harsh desert climate with average peak solar radiation over 1100 Wm-2, the combination presented sub-ambient temperature of maximum 4.7 degrees C when air temperature reached its peak and the maximum daytime and night-time sub-ambient temperatures were 12.5 degrees C and 15.9 degrees C respectively.
英文关键词	Silica sphere radius Volume fraction Thickness Emissivity Reflectors
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000710043800005
WOS关键词	URBAN HEAT-ISLAND ; CITIES ; GLASS
WOS类目	Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied
WOS研究方向	Energy & Fuels ; Materials Science ; Physics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374477
作者单位	[Feng, Jie; Gao, Kai; Paolini, Riccardo; Santamouris, Mattheos] Univ New South Wales, Sch Built Environm, Sydney, NSW 2052, Australia; [Jiang, Yue] Univ New South Wales, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia; [Ulpiani, Giulia; Krajcic, Djordje; Ranzi, Gianluca] Univ Sydney, Sch Civil Engn, Sydney, NSW 2006, Australia
推荐引用方式 GB/T 7714	Feng, Jie,Gao, Kai,Jiang, Yue,et al. Optimization of random silica-polymethylpentene (TPX) radiative coolers towards substantial cooling capacity[J],2022,234.
APA	Feng, Jie.,Gao, Kai.,Jiang, Yue.,Ulpiani, Giulia.,Krajcic, Djordje.,...&Santamouris, Mattheos.(2022).Optimization of random silica-polymethylpentene (TPX) radiative coolers towards substantial cooling capacity.SOLAR ENERGY MATERIALS AND SOLAR CELLS,234.
MLA	Feng, Jie,et al."Optimization of random silica-polymethylpentene (TPX) radiative coolers towards substantial cooling capacity".SOLAR ENERGY MATERIALS AND SOLAR CELLS 234(2022).