한국전산유체공학회:학술대회논문집

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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VERIFICATION OF FIN EFFICIENCY THEORY FOR THE CIRCULAR FINNED-TUBE HEAT EXCHANGER BY NUMERICAL EXPERIMENT

원형휜-원형관 열교환기의 휜효율 이론에 관한 수치적 검증

  • 강희찬 (군산대학교 기계자동차공학부) ;
  • 임복빈 (군산대학교대학원 기계공학과) ;
  • 이종휘 (군산대학교대학원 기계공학과) ;
  • 장병춘 (군산대학교대학원 기계공학과) ;
  • 안서욱 (군산대학교대학원 기계공학과)
  • Published : 2008.03.26
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Abstract

The purpose of the present study is to investigate the convective heat transfer characteristics and the validity of fin efficiency of the circular finned-tube heat exchanger by using commercial CFD code. The heat transfer coefficient obtained by using the laminar model was 22% overestimated to the experimental data. The fin surface temperature compared with the experimental data measured by the liquid crystal method. The fin efficiency by the present numerical experiment, defined as normalized and averaged fin surface temperature, was greater than the theoretical fin efficiency and the difference is increased at high value of the factor m.

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