气候变化领域集成服务门户(CCPortal): Ultrahigh-efficiency desalination: Via a thermally-localized multistage solar still

CCPortal

DOI	10.1039/c9ee04122b
	Ultrahigh-efficiency desalination: Via a thermally-localized multistage solar still
	Xu Z.; Zhang L.; Zhao L.; Li B.; Bhatia B.; Wang C.; Wilke K.L.; Song Y.; Labban O.; Lienhard J.H.; Wang R.; Wang E.N.
发表日期	2020
ISSN	17545692
起始页码	830
结束页码	839
卷号	13 期号:3
英文摘要	Passive vapor generation systems with interfacial solar heat localization enable high-efficiency low-cost desalination. In particular, recent progress combining interfacial solar heating and vaporization enthalpy recycling through a capillary-fed multistage architecture, known as the thermally-localized multistage solar still (TMSS), significantly improves the performance of passive solar desalination. Yet, state-of-the-art experimental demonstrations of solar-to-vapor conversion efficiency are still limited since the dominant factors and the general design principle for TMSS were not well-understood. In this work, we show optimizing the overall heat and mass transport in a multistage configuration plays a key role for further improving the performance. This understanding also increases the flexibility of material choices for the TMSS design. Using a low-cost and free-of-salt accumulation TMSS architecture, we experimentally demonstrated a record-high solar-to-vapor conversion efficiency of 385% with a production rate of 5.78 L m-2 h-1 under one-sun illumination, where more than 75% of the total production was collected through condensation. This work not only significantly improves the performance of existing passive solar desalination technologies for portable and affordable drinking water, but also provides a comprehensive physical understanding and optimization principle for TMSS systems. © 2020 The Royal Society of Chemistry.
英文关键词	Conversion efficiency; Costs; Distillation; Efficiency; Potable water; Solar heating; Experimental demonstrations; Heat and mass transports; Multi-stage solar still; Multistage configuration; One-sun illumination; Optimization principle; Salt accumulations; Vaporization enthalpies; Desalination; desalination; energy efficiency; experimental study; heating; optimization; performance assessment; solar power
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189691
作者单位	Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai, 200240, China; Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
推荐引用方式 GB/T 7714	Xu Z.,Zhang L.,Zhao L.,et al. Ultrahigh-efficiency desalination: Via a thermally-localized multistage solar still[J],2020,13(3).
APA	Xu Z..,Zhang L..,Zhao L..,Li B..,Bhatia B..,...&Wang E.N..(2020).Ultrahigh-efficiency desalination: Via a thermally-localized multistage solar still.Energy & Environmental Science,13(3).
MLA	Xu Z.,et al."Ultrahigh-efficiency desalination: Via a thermally-localized multistage solar still".Energy & Environmental Science 13.3(2020).