圆柱形环状脉动热管烧干特性  

Drying characteristics of cylindrical annular pulsating heat pipe

作　　者：惠博 侯宏艺 张涛 车生文 HUI Bo;HOU Hongyi;ZHANG Tao;CHE Shengwen(Lanzhou Lanshi Heat Exchange Equipment Co.,Ltd.,Lanzhou 730000,Ganshu,China;Huian Company of Beihua Research Institute Group,Xi'an 712000,Shaanxi,China;School of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,Ganshu,China)

机构地区：[1]兰州兰石换热设备有限责任公司,甘肃兰州730000 [2]北化研究院集团惠安公司,陕西西安710302 [3]兰州理工大学机电工程学院,甘肃兰州730000

出　　处：《化工进展》2023年第S01期33-40,共8页Chemical Industry and Engineering Progress

基　　金：甘肃省科技重大专项(21ZD3GA001)。

摘　　要：当前各个领域对高效、高均温性的散热需求日益提高,脉动热管以其传热效率优异、加热方式灵活、结构简单等优势,成为合适、有效的散热元件。本文提出并设计了一种圆柱形环状脉动热管,并通过实验研究了圆柱形环状脉动热管的烧干特性。实验选用无水乙醇、HFE-7200为工质,在90°倾角条件下,对30%、70%充液率的脉动热管进行了加热功率为100~200W的实验测试;在30%充液率条件下,对30°、45°、70°安装角度的脉动热管进行了加热功率为20~100W的实验测试,研究了圆柱形环状脉动热管在不同弯头处的烧干特性。研究结果表明:倾角越大,圆柱形环状脉动热管在弯头处达到烧干时所需要的加热功率越大。当工质为HFE-7200,倾角分别为30°、45°、70°时,圆柱形环状脉动热管4个弯头处发生烧干状态的功率均为100W。At present,the heat dissipation demand for high efficiency and high temperature uniformity is increasing in various fields.Pulsating heat pipe has become a suitable and effective heat dissipation element due to its excellent heat transfer efficiency,flexible heating mode,simple structure and other advantages.In this paper,a cylindrical annular pulsating heat pipe was proposed and designed,and the drying characteristics of the cylindrical annular pulsating heat pipe were studied experimentally.In the experiment,anhydrous ethanol and HFE-7200 were used as working medium.Under the condition of 90°dip angle,the heating power of 100—200W was tested for the pulsating heat pipe with 30%and 70%liquid filling rate.Under the condition of 30%liquid filling rate,the heating power of the pulsating heat pipe at 30°,45°and 70°was measured at 20—100W.The drying characteristics of cylindrical annular pulsating heat pipe at different elbows were studied.The results showed that the higher the dip angle,the higher the drying power of the cylindrical annular pulsating heat pipe.When the working medium was HFE-7200 and the dip angles were 30°,45°and 70°,respectively,the powers of the four elbows of the cylindrical annular pulsating heat pipe were all 100W.

关 键 词：圆柱形环状脉动热管 倾角 加热功率 充液率 烧干特性 

分 类 号：TK124[动力工程及工程热物理—工程热物理]