Thermal Resistance and Numerical Simulation Analysis of Blast Furnace Stave

Abstract

The thermal resistance model of blast furnace cooling stave is established by combining the entransy dissipation heat resistance with the convective thermal resistance of each heat exchange surface, and the influence of structural parameters of cooling stave on thermal resistance is discussed. The results show that in the heat transfer process of blast furnace cooling stave, the factors that determine its heat transfer performance include the entransy dissipation heat resistance of the stave body and the convective heat resistance of each heat exchange surface. The entransy dissipation heat resistance reflects the thermal conductivity of the cooling stave. The smaller it is, the better the thermal conductivity is. The convective thermal resistance reflects the convective heat transfer capacity of hot surface, cold surface and inner surface of water pipe. The smaller it is, the stronger the surface heat transfer capacity is. It is the theoretical basis for improving the performance of the cooling stave by changing the structural parameters of the cooling stave, reducing the entransy dissipation heat resistance of the cooling stave or the convective heat resistance on the inner surface of the cooling water pipe.