工质物性参数对毛细蒸发弯月面传输特性影响  

Effects of thermophysical properties of working material on heat and mass transfer of evaporating capillary meniscus

作　　者：黄晓明[1] 金鑫[1] 王超[1] 刘伟[1] 

机构地区：[1]华中科技大学能源与动力工程学院,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2013年第4期98-102,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51106057);华中科技大学自主创新基金资助项目(2011QN150)

摘　　要：基于延展弯月面传热传质模型,以戊烷为基础工质探讨了汽化潜热、导热系数、表面张力系数和黏性系数等关键物性参数变化对毛细蒸发弯月面热、质传输能力的影响.针对同样条件下甲醇、戊烷和氨3种工质毛细蒸发传热能力,定义了一个仅与工质物性有关的物性参数群PF.分析结果表明PF具有明确物理意义,并能够有效评价工质的毛细蒸发特性,对该类系统的工质选择具有很好的指导意义.On the basis of the mathematic model for heat and mass transfer of the extended meniscus, the influence of some thermal physical parameters of working fluid, including latent heat of vaporiza- tion, liquid conductivity coefficient, surface tension coefficient and viscosity coefficient, on the trans port characteristic of capillary evaporating meniscus were discussed. To evaluating the transport capa- bility of the meniscus, a physical parameter group PF was proposed. Numerical analysis shows that PF has obvious physical meanings, is useful in evaluating the capillary evaporating transport capability of working fluid and in choosing working fluid for such kind of system.

关 键 词：回路热管 毛细蒸发 弯月面 薄膜 物性参数 数值分析 

分 类 号：TK124[动力工程及工程热物理—工程热物理]