摘要
在１００ｍｍ×４ｍｍ耐热玻璃制喷动床内，采用环形区充气的方法改善环形区传热及流动，测定了床壁与固体颗粒床层间的对流传热系数，并与普通喷动床进行了对比，探讨了影响这种充气喷动床对流传热系数的因素．由实验结果进行数值计算，得出了经验准数关联式，计算结果与实验数值相关良好．
Walltobed heat transfer characteristics were measured in a spouted bed made of plexiglass of I.D. 92mm. Four kinds of particles of different diameter and material were used and the measurements were compared with a conventional spouted bed. It is observed that the heat transfer coefficient of a spouted bed with annular aeration is better than that of a conventional spouted bed. An empirical corrlation for the Nusselt number was established, which fits to the experimental data very well.
出处
《化工冶金》
CSCD
北大核心
1998年第3期244-248,共5页
关键词
喷动床
环形区充气
对流传热系数
传热
Spouted bed, Annular aeration, Heat transfer coefficient
