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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Frost Behavior on a One-Dimensional Fin Considering Heat Conduction of Heat Exchanger Fins

열교환기 휜의 열전도를 고려한 1차원 휜에서의 착상 거동

  • Kim, Jung-Soo (School of Mechanical Engineering, Hanyang University) ;
  • Kang, Soo-Jin (School of Mechanical Engineering, Hanyang University) ;
  • Lee, Kwan-Soo (School of Mechanical Engineering, Hanyang University)
  • 김정수 (한양대학교 대학원 기계공학과) ;
  • 강수진 (한양대학교 대학원 기계공학과) ;
  • 이관수 (한양대학교 기계공학과)
  • Published : 2008.11.10
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Abstract

This paper presents a mathematical model to predict the behavior of frost formed on an one-dimensional fin of heat exchanger, considering fin heat conduction under frosting conditions. The computational domain consists of air-side, the frost layer, and fin region, and they are coupled to the frost layer. The frost behavior is more accurately predicted with fin heat conduction considered (Case A) than with constant fin surface temperature assumed (Case B). The results indicate that for Case B, the frost thickness and heat transfer are overpredicted in most regions of the fin, as compared with those for Case A. In addition, for Case A, the maximum frost thickness varies little with the fin length variations, and the extension of the fin length after 30mm contributes insignificantly to heat transfer.

Keywords

References

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