高温平板热管传热特性研究  

A Study on Heat Transfer Characteristics of High Temperature Flat Heat Pipe

作　　者：李晓义 甘久亮 白玉潭 张平[1] 连文磊[2] LI Xiaoyi;GAN Jiuliang;BAI Yutan;ZHANG Ping;LIAN Wenlei(School of Mechanical and Electrical Engineering,Guilin University of Electronic Technology,Guilin 541004,China;College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]桂林电子科技大学机电工程学院,广西桂林541004 [2]南京航空航天大学能源与动力学院,江苏南京210016

出　　处：《电子机械工程》2025年第2期23-28,共6页Electro-Mechanical Engineering

基　　金：航空发动机及燃气轮机基础科学中心项目(P2022-B-II-027-001)。

摘　　要：文中使用金属钠作为高温平板热管工质,对高温平板热管的传热特性展开理论和实验研究。在不同倾角和不同加热功率条件下对热管传热特性进行实验研究与分析,结果表明,在不同倾角下,高温平板热管都有很好的均温性能,且增加倾角可以加速液态工质的回流,促进液体回流至冷凝段,增强热管的均温性能,而随着倾角增加,热管整体温度出现先降低后上升的规律。随着加热功率的升高,高温平板热管的传热性能越好,可以促进热管内部工质的蒸发冷凝循环,强化热管换热性能。同时,基于计算流体动力学采用等效热导率数值模拟方法,通过模拟结果与测点实验数据的对比可知,不同倾角工况下的误差在6.7%以内,不同加热功率工况下的误差在6.53%以内。In this paper the heat transfer characteristics of high temperature flat heat pipe(HTFHP)are theoretically and experimentally investigated using sodium metal as the working medium of HTFHP.The experimental study and result analysis on the heat transfer characteristics of the heat pipe under the conditions of different inclination angles and different heating powers show that the HTFHP has a very good temperature uniformity performance under different inclination angles,and increasing the inclination angle can accelerate the reflux of the liquid work material,promote the reflux of the liquid to the condensing section,and enhance the temperature uniformity performance of the heat pipe.The overall temperature of the heat pipe appears to decrease and then increase with the increase of the inclination angle.With the increase of heating power,the heat transfer characteristics of the HTFHP is better,and the increase of heating power can promote the evaporation and condensation cycle of the working medium inside the heat pipe,and strengthen the heat transfer characteristics of the heat pipe.Moreover,the equivalent thermal conductivity numerical simulation method is used based on the computational fluid dynamics,and through the comparison of the simulation results with the measurement points experimental data,the error of the inclination angle is within 6.7%,and the error of the heating power is within 6.53%.

关 键 词：高温平板热管 传热特性 数值模拟 

分 类 号：TK172.4[动力工程及工程热物理—热能工程]