Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지

The Effect of Ambient Air Condition on Heat Transfer of Hot Steel Plate Cooled by an Impinging Water Jet

  • Lee, Pil-Jong (Research Institute of Industrial Science and Technology (RIST)) ;
  • Park, Hae-Won (Research Institute of Industrial Science and Technology (RIST)) ;
  • Lee, Sung-Hong (School of Mechanical Engineering, Pusan National University)
  • Published : 2003.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

It has been observed that the cooling capacity of an impinging water jet is affected by the seasonal conditions in large-scale steel manufacturing processes. To confirm this phenomenon, cooling experiments utilizing a hot steel plate cooled by a laminar jet were conducted for two initial ambient air temperatures (10$^{\circ}C$ and 40$^{\circ}C$) in a closed chamber, performing an inverse heat conduction method for quantitative comparison. This study reveals that the cooling capacity at an air temperature of 10$^{\circ}C$ is lower than the heat extracted at 40$^{\circ}C$. The amount of total extracted heat at 10$^{\circ}C$ is 15% less than at 40$^{\circ}C$ , These results Indicate the quantity of water vapor, absorbed until saturation, affects the mechanism of boiling heat transfer.

Keywords

References

  1. Filipovic, J., Viskanta, R., Incropera, F. P. and Veslocki, T. A., 1994, 'Cooling of a Moving Steel Strip by an Array of Round Jets,' Steel Research, Vol. 65, No. 12, pp. 541-547 https://doi.org/10.1002/srin.199401210
  2. Hatta, N., Kokado, J., Takuda, H., Harada, J. and Hiraku, K., 1984, 'Predictable Modelling for Cooling Process of a Hot Steel Plate by a Laminar Water Bar,' Arch. Eisenhuttenwes, Vol. 55, No.4, pp. 143-148
  3. Ishigai, S., Nakanishi, S. and Ochi, T., 1978, 'Boiling Heat Transfer for a Plane Water Jet Impinging on a Hot Surface,' Int. Heat Transfer Conf., 6th, pp.445-450
  4. Katsuta, M. and Kurose, T., 1981, 'A Study on the Boiling Heat Transfer of Thin Liquid Film (Part 2, Nucleate Boiling Heat Flux,' JSME, Vol. 47, No. 421, pp. 1849-1860 https://doi.org/10.1299/kikaib.47.1849
  5. Kim, S. J., 1990, Characteristics of ThermoPhysical Properties of Various Kinds of Steel at Elevated Temperature, Research Report, Research Institute of Industrial Science and Technology
  6. Kline, S. J. and McClintock, F. A., 1953, 'Describing Uncertainties in Single-Sample Experiments,' Mechanical Engineering, Vol. 75,pp. 3-8
  7. Kokado, J., Hatta, N., Takuda, H., Harada, J. and Yasuhira, N., 1984, 'An Analysis of Film Boiling Phenomena of Subcooled Water Spreading Radially on a Hot Steel Plate,' Arch. Eisenhuttenwes, Vol. 55, No.3, pp. 113-118
  8. Lee, K. W. and Kim, Y., 1988, 'A study on the Boiling Heat Flux on High Temperature Surface by Impinging Water Jet,' KSME, Vol. 12, No.1, pp.81-94
  9. Oh, S. M. and Lee, S. J., 1992, 'Cooling Chacterisrics of a Hot Steel Plate by a Circular Impinging Liquid Jet,' KSME, Vol. 16, No.6, pp. 1150-1155
  10. Roberts, W. L., 1983, Hot Rolling of Steel, Marcel Dekker, New York
  11. Ruch, M. A. and Holman, J. P., 1975, 'Boiling Heat Transfer to a Freon-113 Jet Impinging Upward onto a Flat Heated Surface,' Int. J. Heat Mass Transfer, Vol. 18, pp. 51-60 https://doi.org/10.1016/0017-9310(75)90007-1
  12. Stoecker, W. F. and Jones, J. W., 1982, Refrigeration and Air Conditioning, McGraw-Hill, New York
  13. Tacke, G., Litzke, H. and Raquet, E., 1985, 'Investigations into the Efficiency of Cooling Systems for Wide-Strip Hot Rolling Mills and Computer-Aided Control of Strip Cooling, in Accelerated Cooling of Steel,' P. D. Southwick, Ed., The Metallurgical Socity, Warrendale Pa., pp.35-54
  14. Trujillo, D. M., INTEMP user's manual, TRUCOMP CO., CA
  15. Vader, D. T., Incropera, F. P. and Viskanta, R., 1992, 'Convective Nucleate Boiling on a Heated Surface Cooled by an Impinging, Planar Jet of Water,' J. Heat Transfer, Vol. 114, pp. 152-160 https://doi.org/10.1115/1.2911241