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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Experimental Study on the Performance Change of the Fin and Tube Type Heat Exchanger by the Frosting

착상에 의한 휜관형 열교환기의 성능변화에 관한 실험적 연구

  • Kim, Jung-Kuk (Department of Energy and Environmental Engineering, Kyushu University) ;
  • Koyama, Shigeru (Department of Energy and Environmental Engineering, Kyushu University) ;
  • Kuwahara, Ken (Department of Energy and Environmental Engineering, Kyushu University) ;
  • Park, Byung-Duck (Department of Automotive Engineering, Kyungpook National University) ;
  • Kim, Dong-Hwi (Digital Appliance Research Laboratory, LG Electronics) ;
  • Sa, Yong-Cheol (Digital Appliance Research Laboratory, LG Electronics)
  • 김정국 (큐슈대학교 환경에너지공학) ;
  • 소산번 (큐슈대학교 환경에너지공학) ;
  • 상원헌 (큐슈대학교 환경에너지공학) ;
  • 박병덕 (경북대학교 자동차공학과) ;
  • 김동휘 (LG전자 디지털어플라이언스 연구소) ;
  • 사용철 (LG전자 디지털어플라이언스 연구소)
  • Published : 2009.02.10
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Abstract

The present study was investigates the effect of the parameters on the frost formation and heat transfer performance such as fin shape, air temperature and air velocity. Heat transfer rate and pressure drop by frost were experimentally investigated. Effect of the wet blub temperature and air velocity on the heat transfer performance has been also investigated. The heat transfer performance of the louver fin and tube type heat exchanger was higher by maximum of 0.85% than the corrugate fin type at the air temperature of $2.0/1.5^{\circ}C$. As the wet blub temperature of air were increased, the heat transfer rate, pressure drop and mass of frost of three test models were increased. Especially, the maximum heat transfer rate and maximum pressure drop were shown for the Type B louver fin heat exchanger. As an experimental result, the enhancement factor(EF) of louver fin and tube type heat exchanger was only $0.2{\sim}0.4$ due to the high pressure drop.

Keywords

References

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