[1]张任平,陈永平,施明恒.燕尾形轴向槽道热管的蒸发冷凝传热特性[J].东南大学学报(自然科学版),2012,42(3):453-456.[doi:10.3969/j.issn.1001-0505.2012.03.011]
 Zhang Renping,Chen Yongping,Shi Mingheng.Evaporation and condensation heat transfer characteristics of heat pipe with axially swallow-tailed microgrooves[J].Journal of Southeast University (Natural Science Edition),2012,42(3):453-456.[doi:10.3969/j.issn.1001-0505.2012.03.011]
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燕尾形轴向槽道热管的蒸发冷凝传热特性()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
42
期数:
2012年第3期
页码:
453-456
栏目:
能源与动力工程
出版日期:
2012-05-20

文章信息/Info

Title:
Evaporation and condensation heat transfer characteristics of heat pipe with axially swallow-tailed microgrooves
作者:
张任平 陈永平 施明恒
东南大学能源与环境学院, 南京 210096
Author(s):
Zhang Renping Chen Yongping Shi Mingheng
School of Energy and Environment, Southeast University, Nanjing 210096, China
关键词:
槽道热管 传热 薄液膜
Keywords:
grooved heat pipe heat transfer thin liquid film
分类号:
TK124
DOI:
10.3969/j.issn.1001-0505.2012.03.011
摘要:
建立了燕尾形轴向槽道热管蒸发和冷凝薄液膜传热特性理论模型,并对模型进行了数值求解.对蒸发薄液膜区液膜厚度、接触面温度和热流密度分布进行了分析,给出了汽液接触面蒸发/冷凝传热系数沿轴向的变化.研究表明:在蒸发薄液膜区域,薄液膜厚度沿槽壁方向呈线性增加; 汽液接触面的温度在起点几乎和壁面温度相同,随着薄液膜厚度的增加而迅速降低; 在薄液膜的起始段,热流密度快速达到最大值,随即迅速减小.蒸发段的蒸发传热系数大于冷凝段的冷凝传热系数,蒸发/冷凝传热系数在整个绝热段并不都为零.同时,通过实验验证了模型的正确性.
Abstract:
A theoretical model with a focus on the thin liquid film of the evaporator and condenser section is developed to predict the evaporation and condensation heat transfer characteristics of heat pipes with axially swallow-tailed microgrooves, which is then solved numerically. The thin film thickness, temperature of vapor-liquid interface and heat flux variations in the evaporating thin film region are analyzed. Meanwhile, the heat transfer coefficient of evaporation/condensation along the axial direction in the liquid-vapor interface is presented. The results indicate that the film thickness increases along the wall of microgroove in a linear fashion in the evaporating thin film region; the temperature of the vapor-liquid interface is equal to the wall temperature at the start point and decreases drastically with the increase of the film thickness; in the initial section of thin film, heat flux quickly gets to the maximum value and then rapidly decreases along the wall of microgroove. The evaporating heat transfer coefficient in the evaporator section is higher than the condensing heat transfer coefficient in the condenser section. In the adiabatic section, the heat transfer coefficient of evaporation/condensation is not all of zero. In addition, the accuracy of the numerical results is verified by the experimental data.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 张任平(1979—),男,博士生; 陈永平(联系人),男,博士,教授,博士生导师,ypchen@seu.edu.cn.
基金项目: 国家自然科学基金重大资助项目(11190015)、高等学校博士学科点专项科研基金资助项目(20110092110049).
引文格式: 张任平,陈永平,施明恒.燕尾形轴向槽道热管的蒸发冷凝传热特性[J].东南大学学报:自然科学版,2012,42(3):453-456. [doi:10.3969/j.issn.1001-0505.2012.03.011]
更新日期/Last Update: 2012-05-20