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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Measurements of Heat Transfer Distribution in Spray Cooling of Hot Steel Plate .

분무냉각에 의한 강판 열처리과정에 있어서 열전달분포의 측정

  • 김영찬 (안동대학교 기계공학부) ;
  • 유갑종 (경북대학교 기계공학부) ;
  • 서태원 (안동대학교 기계공학부)
  • Published : 2000.10.01
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Abstract

A good understanding of the heat transfer distribution is very important to suppress the deformation of steel products. In this study, the local heat transfer coefficients are experimentally investigated to understand the heat transfer distribution of thick steel plates with even flat spray nozzle. The steel slabs are cooled down from the initial temperature of about $1000^{\circ}C$ , and the local heat transfer coefficients and surface temperatures are calculated from the measured temperature-time history. The results show that the local heat transfer coefficients of spray cooling are dominated by the local droplet flow rate, and in proportion to becoming more distant from the center of heat transfer surface, the local heat transfer coefficients decrease with the decrease of the local droplet flow rate.

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References

  1. Trans. JSME(B) v.60-574 Spray Cooling with Formation of Liquid Film(Distribution of Heat Transfer Coefficient in High Temperature Region) Kim, Y. C.;Nishio, S.;Ohkubo, H.
  2. Trans. JSME(B) v.62-597 Heat Transfer in High Temperature Region of Spray Cooling Interacting with Liquid Film Flow Kim, Y. C.;Nishio, S.;Ohkubo, H.
  3. Trans. JSME(B) v.62-594 Spray Cooling with Formation of Liquid Film; Film Boiling Heat Transfer of Liquid Film Flow Kim, Y. C.;Nishio, S.;Ohkubo, H.
  4. Int. J. of Heat and Mass Transfer v.41 Heat Transfer of Dilute Spray Impinging on Hot Surface Nishio, S.;Kim, Y. C.
  5. Multiple Science and Technology Spray Cooling of Hot Surface Bolle, L.;Moureau, J. C.
  6. Arch Eisenhuttenwes v.24-1 Investigation of the Heat Transfer in a Simulate Secondary Cooling Zone in the Continuous Casting Process Muller, H.;Jescher, R.
  7. JSME International Journal v.31 Mist Cooling for Thermal Tempering of Glass Ohkubo, H.;Nishio, S.
  8. Journal of Materials Processing and Manufacturing Science v.2-8 Study on Mist Cooling on Heat Treatment of Metal Ohkubo, H.;Nishio, S.
  9. Trans. JSME v.B50 Heat Transfer between Hot Surface and Impinging Subcooled Droplet Shoji, S.;Wakunaga, K.;Kodama, K.
  10. Int. J. of Heat and Mass Transfer v.40 Film Boiling Heat Transfer of Droplet Streams and Sprays Bernardiu, J. D.;Mudawar, I.
  11. Int. J. Heat Mass Transfer v.13 Nonlinear Estimation Applied to the Nonlinear Inverse Heat Conduction Problem Beck, J. V.