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

The Korean Society of Mechanical Engineers (대한기계학회)
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Numerical Study on Heat Transfer Performance of Crossflow Fin-tube Heat Exchanger Depending on Different Fan Positions

직교류 핀-튜브형 열교환기에서 팬 위치변화에 따른 열전달 성능변화 연구

  • Kim, Won Hyung (School of Mechanical Engineering, Kyungpook Nat'l Univ.) ;
  • Park, Tae Seon (School of Mechanical Engineering, Kyungpook Nat'l Univ.)
  • 김원형 (경북대학교 기계공학부) ;
  • 박태선 (경북대학교 기계공학부)
  • Received : 2014.11.13
  • Accepted : 2015.01.05
  • Published : 2015.03.01
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Abstract

The convective heat transfer of a crossflow fin-tube heat exchanger was studied numerically. In order to investigate the dependence of the heat transfer performance on the fan position, several cases with different blowing and suction types were selected for the fan position. A staggered tube arrangement was used for the heat exchanger, and the temperatures of the tube wall and air were $50^{\circ}C$ and $30^{\circ}C$, respectively. The three-dimensional flow structures were examined based on the results. In addition, the convective heat transfer coefficient and mean temperature difference between the inlet and outlet of the heat exchanger were analyzed for the various fan positions, and the heat transfer performance was investigated

직교류 핀-튜브 열교환기의 대류연절달에 대해 수치해석 연구가 수행되었다. 팬위치에 따른 열전달 성능변화를 조사하기 위하여 분사와 흡입형태로서 몇 가지 팬위치가 선택되었다. 열교환기의 튜브는 엇갈림 배열이며, 튜브의 온도와 유입공기의 온도는 각각 $50^{\circ}C$와 $30^{\circ}C$이다. 해석결과로부터 3차원 유동구조가 검토되었으며, 팬의 다양한 설치 위치에 따른 대류 열전달계수와 열교환기 입출구 사이의 평균 온도차에 대한 분석을 통해 열교환기 성능을 논의되었다.

Keywords

References

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