干旱区生态环境知识资源中心(Arid): A flexible film to block solar radiation for daytime radiative cooling

Arid

DOI	10.1016/j.solmat.2021.111029
	A flexible film to block solar radiation for daytime radiative cooling
	Zhang, Ji; Zhou, Zhihua; Quan, Jiayou; Zhang, Debao; Sui, Jiyuan; Yu, Junrong; Liu, Junwei
通讯作者	Liu, JW (corresponding author), Tianjin Univ, Sch Environm Sci & Engn, Tianjin Key Lab Indoor Air Environm Qual Control, Tianjin, Peoples R China. ; Yu, JR (corresponding author), Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China.
来源期刊	SOLAR ENERGY MATERIALS AND SOLAR CELLS
ISSN	0927-0248
EISSN	1879-3398
出版年	2021
卷号	225
英文摘要	Passive radiative cooling without external energy input or environmental pollution is promising to be a serviceable strategy for energy saving. However, intense solar radiation seriously limits the performance of daytime radiative cooling. Here, a flexible and practical approach to reducing solar absorption of the emitters with a spectrally selective film (SSF) was proposed. The solar reflectivity of the SSF is 93%, while the IR transmissivity in the atmospheric window is 87%. Particularly, the SSF is hydrophobic, providing the film with resistance to the potential condensation problems. By covering with the SSF, black emitters achieved a consecutive 24-h sub-ambient radiative cooling. The temperature of the emitter surface decreased by 21.4 ?C comparing to the bare ones at noon, with an average temperature drop of 3.1 ?C below the ambient temperature. And higher average sub-ambient temperature drop of 4.8 ?C was achieved by the improved experiment with convection shield. Additionally, the cooling performance for SSF with various emitters was also discussed. Commercial ESR film can achieve a cooling power of -100 W/m2 with the SSF in arid areas. And the nationalscale modeling in China showed that 85% of China?s areas can achieve daytime sub-ambient radiative cooling by integrating with the proposed film. Thus, the scalable SSF can relax the requirements of solar reflection for emitters, providing a viable solution for daytime radiative cooling with simpler and cheaper emitters.
英文关键词	Radiative cooling Solar radiation Mie scattering Flexible film Spectrally selective Nanoporous polyethylene
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000636435000001
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/2XILL650/351791
作者单位	[Zhang, Ji; Zhou, Zhihua; Zhang, Debao; Sui, Jiyuan; Liu, Junwei] Tianjin Univ, Sch Environm Sci & Engn, Tianjin Key Lab Indoor Air Environm Qual Control, Tianjin, Peoples R China; [Quan, Jiayou; Yu, Junrong] Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Ji,Zhou, Zhihua,Quan, Jiayou,et al. A flexible film to block solar radiation for daytime radiative cooling[J],2021,225.
APA	Zhang, Ji.,Zhou, Zhihua.,Quan, Jiayou.,Zhang, Debao.,Sui, Jiyuan.,...&Liu, Junwei.(2021).A flexible film to block solar radiation for daytime radiative cooling.SOLAR ENERGY MATERIALS AND SOLAR CELLS,225.
MLA	Zhang, Ji,et al."A flexible film to block solar radiation for daytime radiative cooling".SOLAR ENERGY MATERIALS AND SOLAR CELLS 225(2021).