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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Characteristics of Frost Formed on Heat Exchanger Fins of Non-Uniform Temperature Distribution

불균일한 온도분포를 갖는 열교환기 휜에서의 착상 특성

  • 안원준 (한양대학교 대학원 기계공학과) ;
  • 김정수 (한양대학교 대학원 기계공학과) ;
  • 이관수 (한양대학교 기계공학부)
  • Published : 2009.07.10
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Abstract

In this study, frosting experiment was conducted to investigate the characteristics of frost formed on heat exchanger fins of non-uniform temperature distribution. Temperature distribution and frost characteristics of a 2-D fin surface were investigated in the airflow direction and the direction perpendicular to airflow. Temperature gradient was very small in the airflow direction, while it was large in the direction perpendicular to airflow due to fin heat conduction. The variations of the frost thickness gradient and the frost density gradient in the direction perpendicular to airflow were significant. On the other hand, the temperature gradient on frost surface in the direction perpendicular to airflow was significant at the early stage of frosting, while it decreased gradually as time elapsed.

Keywords

References

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