热管内烧结式多孔铜吸液芯的渗透率及毛细力的测量  

Method for Measuring the Permeability and Capillary Force of the Porous Wick in Heat Pipe

作　　者：刘雅聪 朱乐 刘翔宇[1] 刘荣伟 孙杨锋 李万东 侯和龙 LIU Ya-cong;ZHU-Le;LIU Xiang-yu;LIU Rong-wei;SUN Yang-feng;LI Wan-dong;HOU He-long(Industrial Technology Center,Chengde Petrolem College,Chengde 067000,China)

机构地区：[1]承德石油高等专科学校工业技术中心,河北承德067000

出　　处：《承德石油高等专科学校学报》2021年第1期55-58,94,共5页Journal of Chengde Petroleum College

基　　金：2019年承德市社会发展研究课题(物联网—承德钒钛产业多样化发展和深层利用):20193073。

摘　　要：热管内烧结式多孔铜吸液芯的毛细力和渗透率在热管的传热过程中起主要作用,决定了热管的传热效率,毛细力与渗透率的测量较困难。根据烧结式多孔铜吸液芯具有的毛细现象和压差的作用设计了毛细力的测量装置,成功计算出了毛细力的值;利用达西公式推导出渗透率的测量方法并设计渗透率的测量装置,用拟合曲线成功推导出烧结式多孔铜的渗透率值。并研究了烧结铜粉末尺寸(120~150μm、96~120μm、75~96μm、48~75μm、38~48μm)对烧结式多孔铜的毛细力和渗透率性能的影响,并结合微观形貌分析了粉末尺寸对烧结式多孔铜吸液芯的毛细力、渗透率性能的影响,粉末尺寸越小,多孔铜的毛细力越大、渗透率越小。The capillary force and permeability of sintered porous copper wick in heat pipe play a major role in heat transfer process of heat pipes,which determines heat transfer efficiency.Based on the capillary phenomenon and pressure difference of sintered porous copper wick,the measuring device of capillary force is designed and the value of capillary force is calculated successfully.The permeability measurement method of sintered porous copper is deduced by darcy formula and the device of permeability measurement is designed.The sintered copper powder size(120~150μm、96~120μm、75~96μm、48~75μm、38~48μm)for sintered porous copper capillary force and permeability performance is different,the effects of combined with the microstructure of powder size is analyzed for sintered porous copper wick permeability and capillary force as well as absorption performance.The smaller the size of powder becomes,the greater the porous copper capillary force grows,the smaller the permeability becomes.

关 键 词：多孔铜 毛细力 渗透率 热管 吸液芯 

分 类 号：TK172[动力工程及工程热物理—热能工程]