Study on turbulent flow and heat transfer performance of tubes with internal fins in EGR cooler

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• 作者：Lin Liu ; Xiang Ling ; Hao Peng
• 刊名：Heat and Mass Transfer
• 出版年：2015
• 出版时间：July 2015
• 年：2015
• 卷：51
• 期：7
• 页码：1017-1027
• 全文大小：1,110 KB
• 参考文献：1.Grunenwald G, Felber S, Schmitz A, Hetting M (2001) Laser welding EGR coolers-a new process technology for exchanger manufacturing, vehicle thermal management systems conference and exposition, Nashville, TN, USA
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  8.Wang QW, Lin M, Zeng M (2008) Effect of blocked core-tube diameter on heat transfer performance of internally longitudinal finned tubes. Heat Transf Eng 29(1):107-15View Article
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• 作者单位：Lin Liu (1)
  Xiang Ling (1)
  Hao Peng (1)
  
  1. Jiangsu Key Laboratory of Process Enhancement and New Energy Equipment Technology, School of Mechanical and Power Engineering, Nanjing Tech University, No. 5 Xin Mo Fan Road, Nanjing, 210009, People’s Republic of China
  
• 刊物类别：Engineering
• 刊物主题：Engineering Thermodynamics and Transport Phenomena
  Industrial Chemistry and Chemical Engineering
  Thermodynamics
  Physics and Applied Physics in Engineering
  Theoretical and Applied Mechanics
  Engineering Fluid Dynamics
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-1181

文摘

In this paper, flow and heat transfer performances of the tubes with internal longitudinal fins in Exhaust Gas Recirculation (EGR ) cooler were investigated by three-dimension computation and experiment . Each test tube was a single-pipe structure, without inner tube. Three-dimension computation was performed to determine the thermal characteristics difference between the two kinds of tubes, that is, the tube with an inner solid staff as a blocked structure and the tube without the blocked structure. The effects of fin width and fin height on heat transfer and flow are examined. For proving the validity of numerical method, the calculated results were compared with corresponding experimental data. The tube-side friction factor and heat transfer coefficient were examined. As a result, the maximum deviations between the numerical results and the experimental data are approximately 5.4?% for friction factor and 8.6?% for heat transfer coefficient, respectively. It is found that two types of internally finned tubes enhance significantly heat transfer. The heat transfer of the tube with blocked structure is better, while the pressure drop of the tube without blocked structure is lower. The comprehensive performance of the unblocked tube is better to applied in EGR cooler.