文献类型：期刊文献

英文题名：Study on vertical falling film gas-liquid two-phase evaporation heat transfer of annular scrubbing cooling tube with fins

作者：Wang, Liang[1];Wang, Yifei[1];Huang, Xuanxuan[1];Yu, Guangsuo[1]

机构：[1]East China Univ Sci & Technol, Clean Coal Technol Res Inst, Shanghai 200237, Peoples R China

年份：2026

卷号：230

起止页码：244

外文期刊名：CHEMICAL ENGINEERING RESEARCH & DESIGN

收录：;EI(收录号：20261820607318);WOS:【SCI-EXPANDED(收录号:WOS:001759552700001)】；

基金：This work was supported by the National Key R & D Program of China (2017YFB0602601) .

语种：英文

外文关键词：Gas-liquid two phase; Phase change heat transfer; Circular fins; Enhance heat transfer; HTC

摘要：Enhancing the heat transfer between gas-liquid phases has always been the key research issue in the vertical falling film heat transfer process of scrubbing cooling tube. The research objective is to explore the falling film heat transfer characteristics of finned scrubbing cooling tube and optimize the fins parameters, in order to find the optimal coupling parameters of the fins. Based on the VOF method in Fluent, combined with UDF, simulation calculation and analysis of the vertical falling film heat transfer process in finned scrubbing cooling tubes are conducted. The influence of fins quantity, fins thickness, and fins length on the heat transfer process between gas and liquid phases in scrubbing cooling tube is studied, and the synergistic enhancement mechanism of outer annular fins on vertical falling film cooling of high-temperature synthesis gas is quantitatively analyzed. As results, compared with the gas-liquid two-phase heat transfer process of the finned scrubbing cooling tube, the outlet temperature of the finned gas-liquid two-phase is lower. Compared with the non-finned tube, HTC increased by 27.72%, and the performance of reducing synthesis gas temperature is improved by about 11%. As the fins number increases, the downward trend of gas-liquid outlet temperature gradually decreases. The HTC trend increase between gas and liquid phases gradually decreases. As the fins thickness increases, the gas-liquid phase outlet temperature shows firstly decrease and then increase, and HTC shows firstly increase and then decrease. The maximum HTC is about 894 W & sdot;(m2 & sdot;K)-1. As the fins length increases, the gas-liquid phase outlet temperature shows firstly decrease and then increase, and HTC shows firstly increase and then decrease. The optimal coupling parameter combination for fins number is 29, fins thickness is 5 mm and fins length is 10 mm. Fins are beneficial for enhancing the heat transfer process between the gas and liquid phases, and can better improve the heat transfer effect between the gas and liquid phases.