自湿润流体内螺纹重力热管传热特性  

Heat Transfer Characteristics of Internal Helical Microfin Gravity Heat Pipe With Self-Rewetting Fluid

作　　者：辛公明[1] 张鲁生[1] 王鑫煜[1] 刘昕[1] 程林[1] 

机构地区：[1]山东大学热科学与工程研究中心,山东济南250061

出　　处：《工程热物理学报》2013年第12期2363-2365,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51106089);山东大学自主创新基金(No.2012JC020)

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(质量分数5%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-自湿润流体热管热阻稍大于铜-水热管热阻;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.In this paper, gravity heat pipes with internal helical microfin with two kinds of working fluids were manufactured, experimentally investigated and analyzed. Two working fluids were water and self-rewetting fluid （1-Butanol aqueous solution with 5% mass fraction）. Experiments were per- formed both horizontally and vertically. Results show： in horizontal position, the heat transfer limit is improved significantly by self-rewetting fluid compared with water, but the heat pipe with self-rewetting fluid shows slightly higher thermal resistance than the heat pipe with water at low powers; in vertical position, the operating temperature and thermal resistance of the heat pipe with self-rewetting fluid are both slightly higher than those of heat pipe with water.

关 键 词：内螺纹热管 自湿润流体 热阻 传热性能 

分 类 号：TK124[动力工程及工程热物理—工程热物理]