Experimental study on convection heat transfer and air drag in sinter layer  

作　　者：潘利生 魏小林 彭岩 时小宝 刘怀亮 

机构地区：[1]State Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics,Chinese Academy of Sciences [2]Citic Heavy Industries Co., Ltd.

出　　处：《Journal of Central South University》2015年第7期2841-2848,共8页中南大学学报（英文版）

基　　金：Project(51306198)supported by the National Natural Science Foundation of China

摘　　要：Convection heat transfer coefficient and air pressure drop in sinter layer are important factors for the design of sinter cooling craft. Due to the lack of necessary data, the two parameters are studied by experimental method. The experimental results show that heat conduction of sinter impacts the measurement of convection heat transfer coefficient. Convection heat transfer increases with the increase of air volumetric flow rate. Sinter layer without small particles(sample I) gives higher convection heat transfer coefficient than that with small particles(sample II). Under the considered conditions, volumetric convection heat transfer coefficient is in the range of 400-1800 W/(m3·°C). Air pressure drop in sinter layer increases with the increase of normal superficial velocity, as well as with the rise of air temperature. Additionally, air pressure drop also depends on sinter particle size distribution. In considered experimental conditions, pressure drop in sinter sample II is 2-3 times that in sinter sample I, which resulted from 17% small scale particles in sinter sample II.Convection heat transfer coefficient and air pressure drop in sinter layer are important factors for the design of sinter cooling craft. Due to the lack of necessary data, the two parameters are studied by experimental method. The experimental results show that heat conduction of sinter impacts the measurement of convection heat transfer coefficient. Convection heat transfer increases with the increase of air volumetric flow rate. Sinter layer without small particles（sample I） gives higher convection heat transfer coefficient than that with small particles（sample II）. Under the considered conditions, volumetric convection heat transfer coefficient is in the range of 400-1800 W/（m3·°C）. Air pressure drop in sinter layer increases with the increase of normal superficial velocity, as well as with the rise of air temperature. Additionally, air pressure drop also depends on sinter particle size distribution. In considered experimental conditions, pressure drop in sinter sample II is 2-3 times that in sinter sample I, which resulted from 17% small scale particles in sinter sample II.

关 键 词：sinter layer convection heat transfer pressure drop 

分 类 号：O551.3[理学—热学与物质分子运动论]