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

  • 제30권10호
  • /
  • Pages.950-956
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  • 2006
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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가열로 내 슬랩의 온도 예측을 위한 2차원 열전달 모델

2D Heat Transfer Model for the Prediction of Temperature of Slab in a Direct-Fired Reheating Furnace

  • 이동은 (포스코 기술연구소 공정제어연구그룹) ;
  • 박해두 (포스코 기술연구소 공정제어연구그룹) ;
  • 김만영 (전북대학교 기계항공시스템공학부, 전북대학교 부설 공학연구원 공업기술연구센터)
  • 발행 : 2006.10.01
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초록

A mathematical heat transfer model for the prediction of heat flux on the slab surface and temperature distribution in the slab has been developed by considering the thermal radiation in the furnace and transient conduction governing equations in the slab, respectively. The furnace is modeled as radiating medium with spatially varying temperature and constant absorption coefficient. The slab is moved with constant speed through non-firing, charging, preheating, heating, and soaking zones in the furnace. Radiative heat flux which is calculated from the radiative heat exchange within the furnace modeled using the FVM by considering the effect of furnace wall, slab, and combustion gases is applied as the boundary condition of the transient conduction equation of the slab. Heat transfer characteristics and temperature behavior of the slab is investigated by changing such parameters as absorption coefficient and emissivity of the slab. Comparison with the experimental work shows that the present heat transfer model works well for the prediction of thermal behavior of the slab in the reheating furnace.

키워드

참고문헌

  1. Chapman, K. S., Ramadhyani, S. and Viskanta, R., 1991, 'Modeling and Parametric Studies of Heat Transfer in a Direct-Fired Continuous Reheating Furnace,' Metallurgical Transactions B, Vol. 22B, pp. 513-521 https://doi.org/10.1007/BF02654290
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