Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Heat Transfer Characteristics of Flat Plate Finned-Tube Heat Exchangers with a Variation of Fin Pitch and Number of Tube Row

핀-튜브 열교환기의 핀피치 및 열수 변화에 따른 열전달 성능특성에 관한 연구

  • Kim Yong-Han (Graduate School, Department of Mechanical Engineering, Korea University) ;
  • Lee Ho-Seong (Graduate School, Department of Mechanical Engineering, Korea University) ;
  • Kim Yong-Chan (School, Department of Mechanical Engineering, Korea University)
  • 김용한 (고려대학교 기계공학과 대학원) ;
  • 이호성 (고려대학교 기계공학과 대학원) ;
  • 김용찬 (고려대학교 기계공학과)
  • Published : 2005.10.01
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Abstract

The objective of this study is to investigate the heat transfer performance of flat plate finned-tube heat exchangers with large fin pitch. In this study, twenty-two heat exchangers were tested with a variation of fin pitch, number of tube row, and tube alignment. The heat transfer coefficient decreased with a reduction of the fin pitch and an increase of the number of tube row. The staggered tube alignment improved heat transfer performance more than $10\%$ compared to the inline tube alignment. A heat transfer correlation was developed from the measured data for flat plate finned-tubes with large fin pitch. The correlation yielded good predictions of the measured data with mean deviations of $3.6\%\;and\;6.4\%$ for the inline and staggered tube alignment, respectively.

Keywords

References

  1. Wang, C. C. and Chi, K. Y., 2000, Heat transfer and friction characteristics of plain fin-and-tube heat exchangers, Part I: New experimental data, Int. J. Heat Mass Transfer, Vol. 43, pp.2681-2691 https://doi.org/10.1016/S0017-9310(99)00332-4
  2. Rich, D. G., 1973, The effect of fin spacing on the heat transfer and friction performance of multi-row, smooth plate fin-and-tube heat exchangers, ASHRAE Transactions, Vol. 79, pp. 137-145
  3. Rich, D. G., 1975, The effect of the number of tube rows on heat transfer performance of smooth plate fin-and-tube heat exchangers, ASHRAE Transactions, Vol. 81, pp.307-317
  4. Saboya, F. E. M. and Sparrow, E. M., 1976, Transfer characteristics of two-row plate fin and tube heat exchanger configurations, Int. J. Heat Mass Transfer, Vol. 19, pp. 41-49 https://doi.org/10.1016/0017-9310(76)90009-0
  5. Kim, J. Y. and Song, T. H., 2003, Effect of tube alignment on the heat/mass transfer from a plate fin and two-tube assembly: naphthalene sublimation results, Int. J. Heat Mass Transfer, Vol. 46, pp. 3051-3059 https://doi.org/10.1016/S0017-9310(03)00091-7
  6. Ay, H., Jang, J. Y. and Yeh, J. N., 2002, Local heat transfer measurements of plate finned-tube heat exchangers by infrared thermography, Int. J. Heat Mass Transfer, Vol. 45, pp. 4069-4078 https://doi.org/10.1016/S0017-9310(02)00132-1
  7. Critoph, R. E., Holland, M. K. and Fisher, M., 1999, Comparison of steady state and transient methods for measurement of local heat transfer in plate fin-tube heat exchangers using liquid crystal thermography with radiant heating, Int. J. Heat Mass Transfer, Vol. 42, pp.1-12 https://doi.org/10.1016/S0017-9310(98)00207-5
  8. Mon, M. S. and Gross, U., 2004, Numerical study of fin-spacing effects in annular-finned tube heat exchangers, Int. J. Heat Mass Transfer, Vol. 47, pp.1953-1964 https://doi.org/10.1016/j.ijheatmasstransfer.2003.09.034
  9. Romero-Mendez, R., Sen, M., Yang, K. T. and MaClain, R., 2000, Effect of fin spacing on convection in a plate fin and tube heat exchanger, Int. J. Heat Mass Transfer, Vol. 43, pp. 39-51 https://doi.org/10.1016/S0017-9310(99)00120-9
  10. Jang, J. Y. and Wu, M. C., 1996, Numerical and experimental studies of three-dimensional plate-fin and tube heat exchangers, Int. J. Heat Mass Transfer, Vol. 39, pp. 3057-3066 https://doi.org/10.1016/0017-9310(95)00341-X
  11. Wang, C. C. and Chi, K. Y., 2000, Heat transfer and friction characteristics of palin fin-and-tube heat exchangers, Part II: Correlation, Int. J. Heat Mass Transfer, Vol. 43, pp.2693-2700 https://doi.org/10.1016/S0017-9310(99)00333-6