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.
出处
《中国电机工程学报》
EI
CSCD
北大核心
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)~~
关键词
平板热管
整体式微槽群吸液芯
传热性能
强化传热
flat heat pipe
integral micro-grooved wick
thermal performance
heat transfer enhancement
