| Study on the heat transfer of cross flow in vertical upward tubes |
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| 作者姓名： | 胡志华 杨燕华 周芳德 |
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| 作者单位： | School of Mechanical Engineering，Shanghai Jiao Tong University，Shanghai 200030，China，School of Mechanical Engineering，Shanghai Jiao Tong University，Shanghai 200030，China，State Key Laboratory of Multiphase Flow，Xi’an Jiaotong Univeristy，Xi’an 710049，China |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | INTRODUCTION Cross flow and heat transfer were widely found in oil production and chemical facilities.A detailed study of the hydrodynamic characteristics and heat transfer of cross flow is necessary for optimal design of the system and the development of new measuring techniques.Studies on the heat transfer in sin-gle-phase liquid cross flow were carried out in the past decades.Air or water was often chosen as the working fluid,in these studies commonly focused on fluids flowing across r…
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| 关 键 词： | 热传递 交叉流程 电子管 空间容量 表面传递速度 |
| 收稿时间： | 2004-11-19 |
| 修稿时间： | 2005-02-23 |
Study on the heat transfer of cross flow in vertical upward tubes |
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| Hu Zhi-hua,Yang Yan-hua,Zhou Fang-de.Study on the heat transfer of cross flow in vertical upward tubes[J].Journal of Zhejiang University Science,2005,6(10):1128-1131. |
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| Authors: | Hu Zhi-hua Yang Yan-hua Zhou Fang-de |
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| Institution: | (1) School of Mechanical Engineering, Shanghai Jiao Tong University, 200030 Shanghai, China;(2) State Key Laboratory of Multiphase Flow, Xi’an Jiaotong University, 710049 Xi’an, China |
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| Abstract: | A special device was designed to measure temperature difference in this study of heat transfer of water and oil cross flow inside vertical upward tubes. A new heat transfer correlation was obtained for cross flow. The experimental results showed that the dependence of heat transfer on Reynolds is much smaller in a narrow space than that in a wide space. It was found that the heat transfer correlation of cross flow in a narrow space is obviously different from that in a wide space, and that the heat transfer correlation obtained in a wide space may not be applicable to the cross-flow heat transfer in a narrow space. Further, the single-phase heat transfer capability of water cross flow was compared with that of oil cross flow. The experimental results showed that the average heat transfer coefficient of water is about 2～3 times that ofoil when they have the same superficial velocity. |
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| Keywords: | Heat transfer Cross flow Upward |
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