一种微槽群平板热管传热性能的数值和实验研究  

Numerical and Experimental Investigation on Flat Heat Pipes With Integral Micro-grooved Wicks

作　　者：寇志海[1] 白敏丽[2] 杨洪武 牛玲[1] 徐让书[1] 

机构地区：[1]沈阳航空航天大学航空航天工程学院,辽宁省沈阳市110136 [2]大连理工大学能源与动力学院,辽宁省大连市116024 [3]大连金三维科技有限公司,辽宁省大连市116600

出　　处：《中国电机工程学报》2012年第35期92-100,共9页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51206115)~~

摘　　要：提出了一种具有整体式微槽群吸液芯的新型平板热管。该新型平板热管具有散热效率高、机械强度高、制造工艺简单、重量轻、成本低等优点。建立预测平板热管传热传质特性的数学模型,获得了平板热管内蒸汽和液体的温度场、压力场以及速度场。对新型平板热管的传热性能进行实验研究,结果发现,新型微槽群平板热管的导热系数可达到其管壳材料导热系数的12.3倍,并且具有良好的均温特性。数值模拟的结果与实验测量结果吻合良好。A novel flat heat pipe with integral micro-grooved wick was put forward,and has the features of high efficiency of heat dissipation,high mechanical strength,light weight,low cost,convenient manufacture.A mathematical model predicting the heat and mass transport characteristics of the novel flat heat pipe was developed.The temperature,pressure and velocity field in the flat heat pipe were obtained.Moreover,thermal performance of the novel flat heat pipe was investigated experimentally.It is found that the equivalent thermal conductivity of the novel flat heat pipe can be 12.3 times higher than that of the heat pipe material.The novel flat heat pipe can have good temperature uniformity,and play a pronounced role in heat transfer enhancement.The results of numerical simulation agree well with the experimental data.

关 键 词：平板热管 整体式微槽群吸液芯 传热性能 强化传热 

分 类 号：TK124[动力工程及工程热物理—工程热物理]