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Efficiency analysis of radiative slab heating in a walking-beam-type reheating furnace

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  • Han, Sang Heon
  • Chang, Daejun
  • Huh, Cheol

Abstract

The thermal efficiency of a reheating furnace was predicted by considering radiative heat transfer to the slabs and the furnace wall. The entire furnace was divided into fourteen sub-zones, and each sub-zone was assumed to be homogeneous in temperature distribution with one medium temperature and wall temperature, which were computed on the basis of the overall heat balance for all of the sub-zones. The thermal energy inflow, thermal energy outflow, heat generation by fuel combustion, heat loss by the skid system, and heat loss by radiation through the boundary of each sub-zone were considered to give the two temperatures of each sub-zone. The radiative heat transfer was solved by the FVM radiation method, and a blocked-off procedure was applied to the treatment of the slabs. The temperature field of a slab was calculated by solving the transient heat conduction equation with the boundary condition of impinging radiation heat flux from the hot combustion gas and furnace wall. Additionally, the slab heating characteristics and thermal behavior of the furnace were analyzed for various fuel feed conditions.

Suggested Citation

  • Han, Sang Heon & Chang, Daejun & Huh, Cheol, 2011. "Efficiency analysis of radiative slab heating in a walking-beam-type reheating furnace," Energy, Elsevier, vol. 36(2), pages 1265-1272.
    • Handle: RePEc:eee:energy:v:36:y:2011:i:2:p:1265-1272
    DOI: 10.1016/j.energy.2010.11.018
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    Cited by:

    1. Ricardo S. Gomez & Túlio R. N. Porto & Hortência L. F. Magalhães & Gicelia Moreira & Anastácia M. M. C. N. André & Ruth B. F. Melo & Antonio G. B. Lima, 2019. "Natural Gas Intermittent Kiln for the Ceramic Industry: A Transient Thermal Analysis," Energies, MDPI, vol. 12(8), pages 1-29, April.
    2. Hajaliakbari, Nasrollah & Hassanpour, Saied, 2017. "Analysis of thermal energy performance in continuous annealing furnace," Applied Energy, Elsevier, vol. 206(C), pages 829-842.
    3. Il Hong Min & Seong-Gil Kang & Cheol Huh, 2018. "Instability Analysis of Supercritical CO 2 during Transportation and Injection in Carbon Capture and Storage Systems," Energies, MDPI, vol. 11(8), pages 1-19, August.
    4. Mirko Filipponi & Federico Rossi & Andrea Presciutti & Stefania De Ciantis & Beatrice Castellani & Ambro Carpinelli, 2016. "Thermal Analysis of an Industrial Furnace," Energies, MDPI, vol. 9(10), pages 1-13, October.
    5. Landfahrer, M. & Schluckner, C. & Prieler, R. & Gerhardter, H. & Zmek, T. & Klarner, J. & Hochenauer, C., 2019. "Development and application of a numerically efficient model describing a rotary hearth furnace using CFD," Energy, Elsevier, vol. 180(C), pages 79-89.
    6. Liu, H. & Saffaripour, M. & Mellin, P. & Grip, C.-E. & Yang, W. & Blasiak, W., 2014. "A thermodynamic study of hot syngas impurities in steel reheating furnaces – Corrosion and interaction with oxide scales," Energy, Elsevier, vol. 77(C), pages 352-361.
    7. Hadała, Beata & Malinowski, Zbigniew & Rywotycki, Marcin, 2017. "Energy losses from the furnace chamber walls during heating and heat treatment of heavy forgings," Energy, Elsevier, vol. 139(C), pages 298-314.

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