The 3-D Numerical Simulation of a Walking Beam Type Slab Heating Furnace with Regenerative Burners
Jiin-Yuh Jang1, Chien-Nan Lin2, Sheng-Chih Chang3, Chao-Hua Wang4

1Jiin-Yuh Jang, Department of Mechanical Engineering, National Cheng-Kung University, Tainan, Taiwan.
2Chien-Nan Lin, Department of Mechanical Engineering, Far East University, Tainan, Taiwan.
3Sheng-Chih Chang, Department of Mechanical Engineering, National Cheng-Kung University, Tainan, Taiwan.
4Chao-Hua Wang, China Steel Corporation, Kaohsiung, Taiwan.

Manuscript received on 13 August 2016 | Revised Manuscript received on 20 August 2016 | Manuscript Published on 30 August 2016 | PP: 13-19 | Volume-5 Issue-6, August 2016 | Retrieval Number: F4668085616/16©BEIESP
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Abstract: This study investigates the furnace thermal efficiency for a walking-beam type slab heating furnace with regenerative burners. The walking-beam type heating furnace is composed of five zones, namely, flameless, preheating, first heating, second heating and soaking zones with regenerator efficiency 90 %. The furnace uses a mixture of coke oven gas as a fuel to reheat the slabs. The numerical model considers turbulent combustion reactive flow coupled with radiative heat transfer in the furnace. It is shown that with regenerator burners, the furnace thermal efficiency is 72%, which is significantly higher than that of a furnace using the conventional burner without regenerator. Comparison with the in-situ experimental data from steel company in Taiwan shows that the present heat transfer model works well for the prediction of thermal behavior of the slab in the reheating furnace with regenerator burners.
Keywords: Reheating Furnace, Combustion, Radiative Heat Transfer, Regenerative Burner

Scope of the Article: Heat Transfer