文档介绍：中国工程热物理学会传热传质学
学术会议论文编号:123137
自湿润流体内螺纹重力热管传热特性11资助项目:国家自然科学基金资助项目(51106089)
辛公明, 张鲁生, 王鑫煜, 刘昕, 程林*
山东大学热科学与工程研究中心,济南 250061
(Tel:0531-88399598,Email:******@sdu.)
摘要本文研制了两种不同工质的内螺纹重力热管,并对其进行了实验研究和对比分析。两种工质分别采用水和自湿润流体(5wt%正丁醇水溶液),文中实验测量了水平放置和垂直放置时两种热管的传热特性。实验结果表明:水平放置时,自湿润流体相比于水显著提高了内螺纹重力热管的烧干极限,但在低功率时铜-自湿润流体热管表现出稍大于铜-水热管的热阻;垂直放置时,自湿润流体热管的运行温度要比水热管温度稍高,其热阻也略高于水工质热管。
关键词内螺纹热管,自湿润流体,热阻,传热性能
Heat Transfer Characteristics of Internal Helical Microfin Heat Pipe with Self-rewetting Fluid
Gongming Xin, Lusheng Zhang, Xinyu Wang, Lin Cheng*
Institute of Thermal Science and Technology, Shandong University, Jinan 250061, P R China
(Tel: 0531-88399598,Email: ******@sdu.)
Abstract: In this paper, gravity heat pipes with internal helical microfin with two kinds of working fluids are manufactured, experimentally investigated and analyzed. Two working fluids are water and self-rewetting fluid (5wt% 1-Butanol aqueous solution), respectively. The heat transfer characteristics of two heat pipes are experimentally measured both horizontally and vertically. Results show that: when heat pipes in horizontal position, the heat transfer limit is improved significantly by self-rewetting fluid parison with water, but the heat pipe with self-rewetting fluid shows slightly higher thermal resistance than the heat pipe with water at low power; when heat pipes in vertical position, the operating te