Solar-driven high-temperature steam generation at ambient pressure

查看全文 作　　者：Xinyu [1]Wang;Yanming [1]Liu;Rui [1]Feng;Yao [1]Zhang;Chao [1]Chang;Benwei [1]Fu;Tian [1]Luan;Peng [1]Tao;Wen [1]Shang;Jianbo [1]Wu;Chengyi [1]Song;Tao [1]Deng 机构地区：[1]State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University 出　　处：《Progress in Natural Science:Materials International》索引2019年第29卷第1期,共7页 基　　金：financial support from National Key R&D Program of China (No. 2017YFB0406100);National Natural Science Foundation of China (Grant No: 21401129, 51521004, 51420105009 and 51873105);Innovation Program of Shanghai Municipal Education Commission (Grant No. 2019-01-07-00-02-E00069);the Zhi-Yuan Endowed fund from Shanghai Jiao Tong University 摘　　要：This paper demonstrates a facile solar steam generator for the generation of high-temperature steam at ambient pressure. The steam generator consists of a coiled copper tube(CCT) that serves as both solar collector and vapor heater. Both the inner and outer surfaces of the CCT are coated with black superhydrophobic copper oxide layer to improve the solar absorption, and such superhydrophobic layer prevents the condensation and clogging of water vapor during the heating process. Solar vapor is generated at the inlet of CCT through interfacial evaporation and subsequently heated inside the CCT as the vapor travels from the inlet to the outlet. By employing this approach, steam temperature that exceeds 100℃ under 1-sun illumination is demonstrated. Furthermore,steam temperature could reach as high as 250℃ under 10-sun illumination at ambient pressure. Successful sterilization experiment was also performed in this work to demonstrate the potential application of the high temperature steam generated. Such demonstrated approach helps open up the potential usage of solar-driven interfacial evaporation in applications that involve high-temperature steam, including medical sterilization,chemical manufacturing and food processing. 关 键 词：High-temperature STEAM PHOTOTHERMAL conversion materials SOLAR STEAM GENERATION STERILIZATION Vapor HEATING