• Journal of Energy Engineering
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• v.26 no.2
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• pp.23-31
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• 2017

Numerical study was conducted for the effects of various burner array on the workpiece and the gas temperature in a continuos reheating furnace. Under the same conditions which were the total heat of combustion, the heat capacity of unit burner, the number of burner and burner array were changed to be applied the furnace. The behavior of workpiece temperature and gas temperature in a furnace were evaluated for the effects as function of the changed conditions. A continuous reheating furnace designed for 110 tons/day of production capacity was applied in this study. The furnace which has several gas burners is designed to heat a workpiece. By this study, the better condition was confirmed than the existing designed condition.

• Journal of Energy Engineering
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• v.24 no.3
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• pp.82-88
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• 2015

After a reheating furnace installation, the modification of the size and the heat capacity is very difficult. Therefore, the development of design package tool is required for the computation on the correct specifications before the design and the installation. Prior to development of the design tool, a module that calculates the amount of heat loss of each part according to the specifications for determining the thermal efficiency of a continuous heating furnace was developed and applied to the oxy-fuel industrial furnace. Through this, the effects of fuel type, oxygen fraction and recirculation on the efficiency of the furnace of which the output is 110Ton/hour were analyzed. In oxy-fuel combustion condition, the efficiency was 15% higher than air combustion conditions. With the using COG(Coke Oven Gas) instead of LNG, the efficiency was slightly increased. In the air combustion condition, the efficiency was increased about 33% with the preheated air. But, in oxy-fuel condition, the amount of exhaust gas was reduced, so the efficiency was increased about 7%.