Research on the falling film flow and heat transfer characteristics of FLNG spiral wound heat exchanger under sea conditions

作     者：Chong-Zheng Sun Liang Liu Yu-Xing Li Jian-Lu Zhu Chong-Zheng Sun;Liang Liu;Yu-Xing Li;Jian-Lu Zhu

作者机构：College of Pipeline and Civil Engineering/Shandong Provincial Key Laboratory of Oil&Gas Storage and Transportation Safety/Qingdao Key Laboratory of Circle Sea Oil&Gas Storage and Transportation TechnologyChina University of PetroleumQingdaoShandong266580China 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2022年第19卷第3期

页      面：1276-1290页

核心收录：

学科分类：0820[工学-石油与天然气工程] 08[工学] 082002[工学-油气田开发工程] 

基　　金：supported by the National Natural Science Foundation of China(U21B2085) the Natural Science Foundation of Shandong Province of China(ZR2021QE073) the China Postdoctoral Science Foundation(2021M703587) the Qingdao Postdoctoral Applied Research Project(qdyy20200096) Fundamental Research Funds for the Central Universities(20CX06076A) 

主　　题：FLNG Spiral wound heat exchanger Falling film flow Cryogenic heat transfer Sea condition 

摘      要：As the key equipment of floating liquefied natural gas(FLNG)process,the performance of spiral wound heat exchanger(SWHE)influences operation costs and reliability of the whole *** sea conditions destroy the falling film flow state of the refrigeration and then affect the heat transfer performance of FLNG *** order to design and optimize the SWHE,a cryogenic experimental device of FLNG process and a numerical model of falling film flow have been constructed to study the effects of sea conditions on the falling film flow and heat transfer characteristics of *** cryogenic experimental results show that the pitching conditions have larger effects on the heat transfer performance than *** the pitching angle of 7°,the natural gas temperature and gaseous refrigerant temperature increase by 3.22°C and 7.42°C,*** flow rates of refrigerant and feed natural gas have a great impact on the heat transfer performance of SWHE under pitching and compound sloshing *** the tilt angle increases to 9°,the tube structure with outer diameter D=8 mm and pipe spacing S=4 mm is recommended to reduce the drying area of the pipe wall surface.