文献类型：期刊文献

英文题名：Experimental study on enhanced heat transfer tubes in falling film evaporation

作者：Zhang, Zhao[1]; Wang, Xuesheng[1]; Chen, Qinzhu[1]; Zhang, Ting[1]

机构：[1] School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2021

卷号：2029

期号：1

外文期刊名：Journal of Physics: Conference Series

收录：EI(收录号：20214311052528)

语种：英文

外文关键词：Evaporation - Heat flux - Reynolds number - Heat transfer coefficients

摘要：The vertical tube falling film evaporation experimental platform was built, and the falling film evaporation heat transfer experiment was carried out. Comparative study was carried out between two types of enhanced heat transfer tubes, which are converging-diverging tube and the transversally corrugated tube, to explore their heat transfer characteristics of falling film evaporation. The results show that the falling film evaporative heat transfer coefficient of the two tubes increases with the increase of the unit peripheral flow rate, the heat transfer temperature difference, heat flux and the Reynolds number of the flash steam. The falling film evaporation heat transfer coefficient of the converging-diverging tube is about 1.09 times that of the transversally corrugated tube. According to the experimental data, the falling film evaporation heat transfer correlations of these two types of tubes were obtained. These results provide a useful reference for the using of transversally corrugated tube and converging-diverging tube in vertical falling film evaporator. ? 2021 Institute of Physics Publishing. All rights reserved.