| 异形管管内对流换热性能的测试 |
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| 引用本文： | 刘征,陈泽敬,孟继安,李志信.异形管管内对流换热性能的测试[J].工程热物理学报,2003,24(5):831-833. |
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| 作者姓名： | 刘征 陈泽敬 孟继安 李志信 |
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| 作者单位： | 清华大学工程力学系,传热强化与过程节能教育部重点实验室,北京,100084 |
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| 基金项目： | 国家重点基础研究与发展规划资助项目(G2000026301) |
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| 摘 要： | 本文提出了一种较准确测量管外壁面温度的热电偶埋设方法,实验研究了交叉椭圆管的管内换热性能。结果表明,该方法可较好的将管外换热热阻分离开来,实现异形管内换热性能的测试。
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| 关 键 词： | 异形管 强化换热 测试 |
| 文章编号： | 0253-231X(2003)05-0831-03 |
| 修稿时间： | 2002年12月11 |
MEASUREMENT OF CONVECTIVE HEAT TRANSFER IN ABNORMAL TUBES |
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| LIU Zheng CHEN Ze-Jing MENG Ji-An LI Zhi-Xin.MEASUREMENT OF CONVECTIVE HEAT TRANSFER IN ABNORMAL TUBES[J].Journal of Engineering Thermophysics,2003,24(5):831-833. |
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| Authors: | LIU Zheng CHEN Ze-Jing MENG Ji-An LI Zhi-Xin |
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| Abstract: | A new embedding method of thermocouple is presented to more accurately measure the surface temperature. The experimental results of convection heat transfer in a new abnormal tube-alternating-axis-elliptial-tube show that the outer convective resistance can be separated from the total thermal resistance by this method. Compared to the circular tube, the convection heat transfer in the alternating-axis-elliptical-tube is 30% enhanced. |
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| Keywords: | abnormal tubes heat transfer enhancement measurement |
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