海洋晃荡条件下板式换热器流动冷凝实验研究  

Experimental Study on Flow Condensation Characteristics in Plate Heat Exchanger Under Ocean Sloshing Conditions

作　　者：吴苏晨 樊成成 张文浩 张程宾[1] 陈永平[1] WU Suchen;FAN Chengcheng;ZHANG Wenhao;ZHANG Chengbin;CHEN Yongping(School of Energy and Environment,Southeast University,Nanjing 210096,China)

机构地区：[1]东南大学能源与环境学院,南京210096

出　　处：《工程热物理学报》2024年第12期3791-3798,共8页Journal of Engineering Thermophysics

基　　金：国家自然科学基金青年科学基金项目(No.52306076);江苏省自然科学基金青年基金项目(No.BK20210239)。

摘　　要：板式换热器是浮式海洋温差能发电平台等海洋装备的重要部件。为揭示海洋晃荡对板式换热器冷凝特性的影响,本文采用三自由度运动平台模拟海洋晃荡条件,设计搭建了板式换热器流动冷凝可视化实验系统,研究板式换热器在竖直、倾斜和摇摆姿态下的流动冷凝传热特性,重点分析倾斜和摇摆条件对板式换热器流动冷凝传热的影响特性。研究结果表明,相较于竖直姿态,垂直负倾角和水平正倾角条件下板式换热器冷凝传热性能弱,但垂直正倾角和水平负倾角条件均可改善冷凝传热性能。此外,提高摇摆幅度改善工质均流性,使得板式换热器冷凝传热性能提升,但冷凝传热性能对摇摆频率并不敏感。Plate heat exchangers is an important component of marine equipment such as floating ocean thermal energy generation platform.To elucidate the role of sloshing on the flow condensation of plate heat exchanger,a three-degree-of-freedom motion platform is used to simulate the ocean sloshing conditions,and a visually experimental system for flow condensation in the plate heat exchanger is constructed.The flow condensation characteristics of plate heat exchangers under vertical,inclined,and swing postures are studied,with a focus on the effect of inclined and swing conditions on the flow-condensation heat transfer of a plate heat exchanger.The results indicate that,compared to the vertical posture,the condensation performance of the plate heat exchanger is weaker under vertical negative inclination and horizontal positive inclination postures,while both the vertical positive inclination and horizontal negative inclination postures can improve the condensation performance.Moreover,a higher swing amplitude can improve the uniformity of the working fluid within condenser,thereby enhancing the condensation performance of the plate heat exchanger.However,the condensation heat transfer performance is not sensitive to the swing frequency.

关 键 词：板式换热器 海洋晃荡 两相流 冷凝传热 

分 类 号：TK123[动力工程及工程热物理—工程热物理]