Convective Heat Transfer Characteristics in a Jetting Fluidized Bed with Conical Distributor

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Shigeyuki Uemiya¹  Masao Mukai¹  Chun-Hua Luo¹  Toshinori Kojima¹ 

[1] Department of Industrial Chemistry, Seikei University

关键词: Fluidization;    Grid Zone;    Jet;    Heat Transfer;    Thermal Couple;   

DOI  :  10.1252/jcej.30.101

来源: Maruzen Company Ltd

【 摘 要 】

References(12)Cited-By(1)Heat transfer characteristics were investigated in an 80-mm ID jetting fluidized bed with a conical distributor and center nozzle using 0.262-mm alumina particles as the bed material. The temperature profiles at different nozzle diameters, different nozzle gas velocities and temperatures were measured by means of very thin thermocouples. Analysis of experimental data suggests that the axial temperature profiles mainly depend on the nozzle gas momentum. The axial temperature dissipation rate is related to Froude number and the nozzle number. Transverse temperature profiles can be represented by an empirical correlation including the nozzle number and the ratio of radius to nozzle diameter. The thermal penetration height and the thermal boundary were also discussed.

【 授权许可】

Unknown