Regenerative heating furnace as a high-efficiency and energy-saving heating equipment is widely applied in iron and steel industry. Accurate knowledge of total heat exchange factor of regenerative heating furnace is of great significance to improve its on-line control performance. Therefore, determination of total heat exchange factor of regenerative reheating furnace is investigated in this work. A three-dimensional mathematical model of regenerative reheating furnace based on the analysis of heat transfer process is established. The zonal method is used to solve the temperatures of gas zone, slab surface zone and wall surface zone, in which the Monte Carlo method is used to compute the total radiant exchange areas of thermocouple to all other zones in the furnace. The total heat exchange factors of regenerative reheating furnace are determined and the effects of thermal and operational parameters, such as productivity, fuel consumption and slab hot charging temperature are analyzed. The results show that the total heat transfer factor increases with the decrease of fuel consumption or slab hot charging temperature, and increases with the increase of productivity. The present work is valuable for dynamical compensation of total heat exchange factor of the online control mathematical models in regenerative reheating furnace.

蓄热式加热炉作为一种高效节能的加热设备，在钢铁工业中得到了广泛的应用。准确了解蓄热式加热炉的总换热系数对提高其在线控制性能具有重要意义。因此，这项工作研究了再生式加热炉的总热交换系数的确定。在分析传热过程的基础上，建立了蓄热式加热炉三维数学模型。区域法用于求解气体区域，板坯表面区域和壁表面区域的温度，其中蒙特卡罗方法用于计算热电偶到炉中所有其他区域的总辐射交换面积。确定了蓄热式加热炉的总热交换系数，并分析了热和运行参数对生产率，燃料消耗和板坯热装温度的影响。结果表明，总传热系数随燃料消耗或平板热装温度的降低而增加，随生产率的增加而增加。该工作对于动态补偿蓄热式加热炉在线控制数学模型的总换热系数具有重要意义。并且随着生产率的提高而增加。该工作对于动态补偿蓄热式加热炉在线控制数学模型的总换热系数具有重要意义。并且随着生产率的提高而增加。该工作对于动态补偿蓄热式加热炉在线控制数学模型的总换热系数具有重要意义。