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Numerical Study on Combined Heat Transfer in NIR Dryer for Agricultural and Marine Products

근적외선 농수산물 건조기의 복합열전달특성에 관한 수치적 연구

  • Choi, H.K. (Department of Mechanical Design and Manufacturing Engineering, Changwon National University)
  • Published : 2006.10.25

Abstract

Mixed heat transfer in an indirected NIR (Near Infrared Ray) dry chamber was investigated numerical analysis. It is Important that the miked heat transfer effects on double parameters which the Reynolds number and the position of emit lamp. Reynolds number are based on the outer diameter of the cylinder range from 103 to $30{\times}105$. Four difference heat transfer regimes of behavior are apparent: forced convection and radiation on the outer surface of the cylinder, pure conduction, pure natural convection and radiation between lamp surface and inner surface of the cylinder. The temperature and flow patterns are illustrated by iso-contour lines for the double parameters. Also presented are results on the convective heat transfer flux and the radiative heat transfer flux as increased with Reynolds number.

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References

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