Air-side heat transfer and flow friction characteristics of four different fin patterns suitable for flat tube bank fin heat exchangers are investigated experimentally. The fin patterns are the fin with six dimples, the fin with nine dimples, the double louvered fin, and the fin with delta-winglet vortex generators (VGs). The corresponding plain fins (plain fin I and plain fin II) are used as the references for evaluating the thermal performances of these fin patterns under identical pump power constraint. The performance of the fin with the six dimples is better than that with nine dimples. The performance of the fin with delta-winglet VGs is better than that of the double louvered fin, and the performance of the latter is better than that of the fins with six or nine dimples. In the tested Reynolds number range, the heat transfer enhancement performance factor of the fin with six dimples, the fin with nine dimples, the double louvered fin, and the fin with delta-winglet VGs is 1.2–1.3, 1.1–1.2, 1.3–1.6, and 1.4–1.6, respectively. The correlations of Nusselt number and friction factor with Reynolds number for the fins with six/nine dimples and the double louvered fin are obtained. These correlations are useful to design flat tube bank fin heat exchangers.
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Experimental Study on Heat Transfer Performances of Flat Tube Bank Fin Heat Exchanger Using Four Different Fin Patterns
Feng-Cai Zheng,
Feng-Cai Zheng
School of Mechanical Engineering,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Key Laboratory of Railway Vehicle
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Search for other works by this author on:
Song Liu,
Song Liu
School of Mechanical Engineering,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Key Laboratory of Railway Vehicle
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Search for other works by this author on:
Zhi-Min Lin,
Zhi-Min Lin
School of Mechanical Engineering,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Key Laboratory of Railway Vehicle
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Search for other works by this author on:
Jaafar Nugud,
Jaafar Nugud
School of Mechanical Engineering,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Key Laboratory of Railway Vehicle
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Search for other works by this author on:
Liang-Chen Wang,
Liang-Chen Wang
Key Laboratory of Railway Vehicle
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
School of Chemistry and Chemical
Engineering Science,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Engineering Science,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Search for other works by this author on:
Li-Min Chang,
Li-Min Chang
School of Mechanical Engineering,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Key Laboratory of Railway Vehicle
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Search for other works by this author on:
Liang-Bi Wang
Liang-Bi Wang
School of Mechanical Engineering,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Key Laboratory of Railway Vehicle
Thermal Engineering of MOE,
School of Mechanical Engineering,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
e-mail: lbwang@mail.lzjtu.cn
Thermal Engineering of MOE,
School of Mechanical Engineering,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
e-mail: lbwang@mail.lzjtu.cn
Search for other works by this author on:
Feng-Cai Zheng
School of Mechanical Engineering,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Key Laboratory of Railway Vehicle
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Song Liu
School of Mechanical Engineering,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Key Laboratory of Railway Vehicle
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Zhi-Min Lin
School of Mechanical Engineering,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Key Laboratory of Railway Vehicle
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Jaafar Nugud
School of Mechanical Engineering,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Key Laboratory of Railway Vehicle
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Liang-Chen Wang
Key Laboratory of Railway Vehicle
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
School of Chemistry and Chemical
Engineering Science,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Engineering Science,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Li-Min Chang
School of Mechanical Engineering,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Key Laboratory of Railway Vehicle
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Thermal Engineering of MOE,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
Liang-Bi Wang
School of Mechanical Engineering,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China;
Key Laboratory of Railway Vehicle
Thermal Engineering of MOE,
School of Mechanical Engineering,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
e-mail: lbwang@mail.lzjtu.cn
Thermal Engineering of MOE,
School of Mechanical Engineering,
Lanzhou Jiaotong University,
Lanzhou 730070, Gansu, China
e-mail: lbwang@mail.lzjtu.cn
1Corresponding author.
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received August 2, 2016; final manuscript received September 8, 2017; published online January 10, 2018. Assoc. Editor: Debjyoti Banerjee.
J. Heat Transfer. Apr 2018, 140(4): 041801 (8 pages)
Published Online: January 10, 2018
Article history
Received:
August 2, 2016
Revised:
September 8, 2017
Citation
Zheng, F., Liu, S., Lin, Z., Nugud, J., Wang, L., Chang, L., and Wang, L. (January 10, 2018). "Experimental Study on Heat Transfer Performances of Flat Tube Bank Fin Heat Exchanger Using Four Different Fin Patterns." ASME. J. Heat Transfer. April 2018; 140(4): 041801. https://doi.org/10.1115/1.4038419
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