Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Correlation of Critical Air Temperature for Frost Delay on a Cold Plate

냉각면 평판에서 착상 지연을 위한 임계공기온도 상관식

  • 김정수 (한양대학교 대학원 기계공학과) ;
  • 김유일 (한양대학교 대학원 기계공학과) ;
  • 김욱중 (한국기계연구원 에너지기계연구센터) ;
  • 이관수 (한양대학교 기계공학부)
  • Published : 2006.12.01
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Abstract

This paper examines the critical air temperature at which frost formation does not occur on a cold plate in order to improve the efficiency of a heat pump. The critical air temperature on test points is obtained from numerical analysis and a correlation of the critical air temperature is derived as a function of frosting factors (air absolute humidity, air velocity, and cold plate temperature) by least square method. Experiments are carried out to verify the correlation proposed in this study, and the prediction obtained with the correlation agrees well with the experimental data. Based on the correlation, we propose the non-frosting regions according to frosting factors.

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References

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