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Experimental measurement and numerical computation of the air side convective heat transfer coefficients in a plate fin-tube heat exchanger

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Abstract

The air-side forced convective heat transfer of a plate fin-tube heat exchanger is investigated by experimental measurement and numerical computation. The heat exchanger consists of a staggered arrangement of refrigerant pipes with a diameter of 10.2 mm and a fin pitch of 3.5 mm. In the experimental study, the forced convective heat transfer was measured at Reynolds numbers of 1082, 1397, 1486, 1591 and 1649 based on the diameter of the refrigerant piping and on the maximum velocity. The average Nusselt number for the convective heat transfer coefficient was also computed for the same Reynolds number by using the commercial software STAR-CD with the standard k - ɛ turbulent model. It was found that the relative errors of the average Nusselt numbers between the experimental and numerical data were less than 6 percent in a Reynolds number range of 1082∼1649. The errors between the experiment and other correlations from literature ranged from 7% to 32.4%. However, the literature correlation of Kim et al. is closest to the experimental data within a relative error of 7%.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Changwon National University, Changwon, Korea

    Jin Gi Paeng & Young Hwan Yoon

  2. Division of Facilities, Changwon National University, Changwon, Korea

    Kyung Hwan Kim

Authors
  1. Jin Gi Paeng
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  2. Kyung Hwan Kim
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  3. Young Hwan Yoon
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Corresponding author

Correspondence to Jin Gi Paeng.

Additional information

This paper was recommended for publication in revised form by Associate Editor Man-Yeong Ha

Jin-Gi Paeng recieved a bachelor’s degree in Aero Mechanical Engineering from Gyeong-sang National University in 2000. He then went on to recieve his M.S. degrees from Changwon National University in 2004. Currently, he completed the doc-tor’s course and a doctoral dissertation in 2007 and 2008, respectively. He will take a doctorate in 2008.

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Paeng, J.G., Kim, K.H. & Yoon, Y.H. Experimental measurement and numerical computation of the air side convective heat transfer coefficients in a plate fin-tube heat exchanger. J Mech Sci Technol 23, 536–543 (2009). https://doi.org/10.1007/s12206-008-1013-5

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  • DOI: https://doi.org/10.1007/s12206-008-1013-5

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