High-performance and scalable contactless solar evaporation with 3D structure  

高效且可扩展的三维非接触式太阳能蒸发技术

作　　者：Siyang Zheng Jie Yu He Shan Jintong Gao Ruzhu Wang Zhenyuan Xu 郑思洋;于杰;山;高金彤;王如竹;徐震原

机构地区：[1]Engineering Research Center of Solar Power and Refrigeration(MOE),Institute of Refrigeration and Cryogenics,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Science Bulletin》2025年第4期563-572,共10页科学通报(英文版)

基　　金：supported by the National Natural Science Foundation of China(52376200 and 51976123).

摘　　要：Solar evaporation is a sustainable pathway for diverse water treatment technologies.The contactless evaporation stands out for its superior anti-contamination property.However,the evaporation performance is significantly limited by the non-contact heat transport,which is more pronounced in scalable applications with suppressed vapor escaping and tilted solar irradiation.Here,we propose a high-performance contactless solar evaporation design with three-dimensional(3D)solar-heating and vapor-escaping structure.Our theoretical analysis reveals that mass transport is the true bottleneck of contactless solar evaporation in scalable application,and can be significantly improved by our 3D design.A laboratory solar evaporation rate of 1.03 kg m^(-2)h^(-1)was demonstrated with our 3D design,which was 110%higher than the conventional design.Owing to the enhanced solar harvesting and transport,an average evaporation rate of 1.21 kg m^(-2)h^(-1)was demonstrated in outdoor field test with dilute solar flux of 589.98 W m^(-2).The scalability of 3D design was proved by the minimal difference(3%)in natural seawater evaporation performance between the small and large 3D devices.This work provides a robust,high-performance,and scalable solution for solar evaporation,especially for those scenarios with limited tolerance for contamination.

关 键 词：Solar energy Contactless evaporation Wastewater treatment 3D structure 

分 类 号：TN9[电子电信—信息与通信工程]