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

The Korean Society of Mechanical Engineers (대한기계학회)
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The Effect of Ambient Air Condition on a Hot Steel Plate Cooled by Impinging Water Jet

주변공기조건이 충돌수분류에 의한 고온강판의 냉각에 미치는 영향 연구

  • 이필종 (포항산업과학연구원 열유체연구팀) ;
  • 최해원 (포항산업과학연구원 열유체연구팀) ;
  • 이승홍 (부산대학교 기계공학부)
  • Published : 2000.01.01
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Abstract

It is observed that the cooling capacity of impinging water jet is affected by the seasonal conditions in steel manufacturing process with large scale. To confirm this phenomena, the cooling experiments of a hot steel plate by a laminar jet were conducted for two different initial ambient air temperature($10^{\circ}C$ and $40^{\circ}C$) in a closed chamber, and an inverse heat conduction method is applied for the quantitative comparison. It is found that the cooling capacity under $10^{\circ}C$ air temperature is lower than that under $40^{\circ}C$, as is the saturated water vapor is more easily observed, and the amount of total extracted heat in the case of $10^{\circ}C$ is smaller by nearly 15% than that of $40^{\circ}C$ case. From these results, it is thought that the quantity of water vapor, which could be absorbed until saturation, effects on the mechanism of boiling heat transfer.

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References

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