Proceedings of the SAREK Conference (대한설비공학회:학술대회논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Growth of frost formed on heat exchanger fins

열교환기 휜에서의 서리 성장

  • An, Won-Jun (School of Mechanical Engineering, Hanyang University) ;
  • Kim, Jung-Soo (School of Mechanical Engineering, Hanyang University) ;
  • Lee, Kwan-Soo (School of Mechanical Engineering, Hanyang University)
  • 안원준 (한양대학교 대학원 기계공학과) ;
  • 김정수 (한양대학교 대학원 기계공학과) ;
  • 이관수 (한양대학교 기계공학부)
  • Published : 2008.11.21
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Abstract

In this study, frost behavior on two dimensional fins of a heat exchanger was experimentally investigated. Temperature distribution on a 2-D fin surface and frost properties were measured in the directions perpendicular to and parallel to airflow. The results indicated that the temperature gradient in the direction perpendicular to airflow was large because of fin heat conduction, while that in the direction parallel to airflow was very small. Frost thickness in the airflow direction decreased from the leading edge towards the trailing edge of the fin due to leading edge effect. The reduction rate of frost thickness in the airflow direction, however, was very small compared with that in the direction perpendicular to the airflow, as affected by the temperature distribution.

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