气候变化领域集成服务门户(CCPortal): Solar-trackable super-wicking black metal panel for photothermal water sanitation

CCPortal

DOI	10.1038/s41893-020-0566-x
	Solar-trackable super-wicking black metal panel for photothermal water sanitation
	Singh S.C.; ElKabbash M.; Li Z.; Li X.; Regmi B.; Madsen M.; Jalil S.A.; Zhan Z.; Zhang J.; Guo C.
发表日期	2020
ISSN	2398-9629
起始页码	938
结束页码	946
卷号	3 期号:11
英文摘要	Solar-based water sanitation is an environmentally friendly process for obtaining clean water that requires efficient light-to-heat-to-vapour generation. Solar-driven interfacial evaporation has potential, but the inability to control interfacial evaporators for solar tracking limits efficiency at large solar zenith angles and when using optical concentration. Furthermore, clogging affects the efficiency of the device. Here, we create a super-wicking and super-light-absorbing (SWSA) aluminium surface for efficient solar-based water sanitation. The measured evaporation rate exceeds that of an ideal device operating at 100% efficiency, which we hypothesize resulted from a reduced enthalpy of vaporization within the microcapillaries. Limited solar absorber–water contact for water transport minimizes heat losses to bulk water and maximizes heat localization at the SWSA surface. The device can be mounted at any angle on a floating platform to optimize incident solar irradiance and can readily be integrated with commercial solar-thermal systems. With a design that is analogous to bifacial photovoltaic solar panels, we show a 150% increase in efficiency compared with a single-sided SWSA. Given the open capillary channels, the device surface can be easily cleaned and reused. Using the SWSA surface to purify contaminated water, we show a decrease in the level of contaminants to well below the WHO and EPA standards for drinkable water. © 2020, The Author(s).
语种	英语
scopus关键词	Efficiency; Evaporation; Incident solar radiation; Sanitation; Solar power generation; Water pollution; Aluminium surface; Contaminated water; Enthalpy of vaporization; Environmentally friendly process; Floating platforms; Micro-capillaries; Solar thermal systems; Solar zenith angle; Solar absorbers
来源期刊	Nature Sustainability
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/163492
作者单位	The Institute of Optics, University of Rochester, Rochester, NY, United States
推荐引用方式 GB/T 7714	Singh S.C.,ElKabbash M.,Li Z.,et al. Solar-trackable super-wicking black metal panel for photothermal water sanitation[J],2020,3(11).
APA	Singh S.C..,ElKabbash M..,Li Z..,Li X..,Regmi B..,...&Guo C..(2020).Solar-trackable super-wicking black metal panel for photothermal water sanitation.Nature Sustainability,3(11).
MLA	Singh S.C.,et al."Solar-trackable super-wicking black metal panel for photothermal water sanitation".Nature Sustainability 3.11(2020).