| 纳米流体强化倾斜丝网热管换热特性 |
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| 引用本文： | 马琦,刘振华.纳米流体强化倾斜丝网热管换热特性[J].航空动力学报,2009,24(4):783-787. |
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| 作者姓名： | 马琦 刘振华 |
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| 作者单位： | 上海交通大学,机械与动力工程学院,上海,200240 |
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| 基金项目： | 上海市科委基础研究重点项目(04JC14049) |
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| 摘 要： | 对纳米流体强化不同倾角轴向丝网热管的换热特性进行了实验研究,实验以水基CuO纳米流体作为工质,在稳压条件下运行,运行压力为7.45,12.38和19.97 kPa(对应的蒸汽饱和温度为40℃,50℃和60℃).实验结果表明,纳米流体质量浓度对倾斜热管的总热阻有明显的影响,存在一个使热管热阻最小的最佳质量浓度,此质量浓度为1.0%.倾角对热管的换热特性有很大的影响,倾角为45°左右时,热管的蒸发换热系数强化率最大.在此倾角下,蒸发换热系数最大增加了20%,热管的总热阻大约降低了15%.而最大热流密度的强化效果则随着热管倾角的增大而增强,最大增加25%左右.
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| 关 键 词： | 热管 纳米流体 倾角 强化传热 |
| 收稿时间： | 2008/4/16 0:00:00 |
| 修稿时间： | 2008/8/12 0:00:00 |
Thermal performance enhancement of inclined screen heat pipe using nanofluid |
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| MA Qi and LIU Zhen-hua.Thermal performance enhancement of inclined screen heat pipe using nanofluid[J].Journal of Aerospace Power,2009,24(4):783-787. |
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| Authors: | MA Qi and LIU Zhen-hua |
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| Institution: | School of Mechanical Engineering;Shanghai Jiaotong University;Shanghai 200240;China |
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| Abstract: | An experiment was performed to investigate the effect of the inclination angle on thermal performance of screen heat pipe using nanofluid.The study key were the effects of the inclination angle and operating pressure on the heat transfer of both evaporator and condenser as well as the maximum heat flux of the heat pipe.The nanofluid consisted of water and CuO nanoparticles having a mean diameter of 50nm.The concentrations of nanofluid ranged from 0.5wt% to 2.0wt% and the operational pressures of the heat pi... |
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| Keywords: | heat pipe nanofluid inclination angle heat transfer enhancement |
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