Seepage Heat Transfer Model with Thermal Non-equilibrium of High Temperature Clinker
WANG Mei-qi1,CHEN En-li1,GUO Wen-wu1,LIU Peng-fei1,QI Zhuang1,HOU Shuang2
1. School of Mechanical Engineering, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, China
2. Hebei Extension Center of Water Resources Research and Hydrological Technology Experiment, Shijiazhuang, Hebei 050000, China
Abstract：The high temperature cement clinker can be regarded as glowing red and translucent porous media when it is discharged from rotary kiln to grate cooler. It brings greater difficulty to technology improvement of grate cooler since the gas-solid heat transfer mechanism is complex. According to the problem, the glowing red particle can be equivalent to optically thick medium, then an integrated heat transfer coefficient is derived for high temperature clinker particle when heat conducting and thermal radiating. Based on the seepage mechanics and heat transfer theory, an unsteady seepage heat transfer model with thermal non-equilibrium of cement clinker is built which considering the heat radiation effect between the high temperature clinker particle. By solving the model, the distribution of clinker temperature and gas temperature inside the material layer are obtained, at the same time, the difference of cooling rates in different regions are compared to gain the impact of radiation heat transfer factor on the material layer temperature distribution.
王美琪,陈恩利,郭文武,刘鹏飞,戚壮,侯爽. 高温熟料非稳态非热平衡渗流换热模型[J]. 计量学报, 2019, 40(3): 432-439.
WANG Mei-qi,CHEN En-li,GUO Wen-wu,LIU Peng-fei,QI Zhuang,HOU Shuang. Seepage Heat Transfer Model with Thermal Non-equilibrium of High Temperature Clinker. Acta Metrologica Sinica, 2019, 40(3): 432-439.
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2019, Vol. 40 
