Commenced in January 2007
Paper Count: 31100
Evaluation of Optimal Residence Time in a Hot Rolled Reheating Furnace
Authors: Dong-Eun Lee
Abstract:To calculate the temperature distribution of the slab in a hot rolled reheating furnace a mathematical model has been developed by considering the thermal radiation in the furnace and transient conduction in the slab. The furnace is modeled as radiating medium with spatially varying temperature. Radiative heat flux within the furnace including the effect of furnace walls, combustion gases, skid beams and buttons is calculated using the FVM and is applied as the boundary condition of the transient conduction equation of the slab. After determining the slab emissivity by comparison between simulation and experimental work, variation of heating characteristics in the slab is investigated in the case of changing furnace temperature with various time and the slab residence time is optimized with this evaluation.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1080173Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2132
 J. G. Kim, K. Y. Huh, I. T. Kim, "Three-Dimensional Analysis of the Walking-Beam-Type Slab Reheating Furnace in Hot Strip Mills," Numer. Heat Transfer, Part A, vol. 38, pp. 589-609, 2000.
 Z. Li, P. V. Barr, J. K. Brimacombe, "Brimacombe, Computer Simulation of the Slab Reheating Furnace", Can. Metall. Quarterly, vol. 27, pp. 187-196, 1998.
 B. Y. Yang, C. Y. Wu, C. J. Ho, T.-Y. Ho, "A Heat Transfer Model for Skidmark Formation on Slab in a Reheating Furnace", J. Mater. Process. Manufactur. Sci., vol. 3, pp. 277-295, 1995.
 M. Y. Kim, "A Heat Transfer Model for the Analysis of Transient Heating of the Slab in a Direct-Fired Walking Beam Type Reheating Furnace", Int. J. Heat and Mass Transfer, vol. 50, pp. 3740-3748, 2007.
 T. F. Smith, Z. F. Shen, J. N. Friedman, "Evaluation of coefficients for the weighted sum of gray gases model",ASME J. Heat Transfer, vol. 104, pp. 602-608, 1982.
 S. W. Baek, M. Y. Kim, J. S. Kim, "Nonorthogonal Finte-Volume Solutions of Radiative Heat Transfer in a Three-Dimensional Enclosure," Numer. Heat Transfer, Part B, vol. 34, pp. 419-437, 1998.
 D. Y. Byun, S. W. Baek, M. Y. Kim, "Investigation of Radiative Heat Transfer in Complex Geometries using Blocked-Off, Multiblock, and Embedded Boundary Treatments," Numerical Heat Transfer, Part A, Vol. 43, pp. 807~825, 2003