Hydrodynamics and heat transfer characteristics of G–S magnetically stabilized beds consisting of admixtures of shale oil and magnetic particles

被引：2
作者：
Mamdouh Al-Busoul
Zakaria Al-Qodah
Ali Khraewish
机构：
[1] Al-Balqa Applied University,Department of Mechanical Engineering, Faculty of Engineering Technology
[2] Al-Balqa Applied University,Department of Chemical Engineering, Faculty of Engineering Technology
[3] Al-Balqa Applied University,Department of Electrical Engineering, Faculty of Engineering Technology
[4] Hashemite University,Center of Environmental Studies
来源：
Heat and Mass Transfer | 2008年 / 44卷
关键词：
Heat Transfer Coefficient; Magnetic Particle; Magnetic Field Intensity; Fluidized Regime; Magnetic Stabilization;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The hydrodynamic and heat transfer behavior of a bed consisting of magnetic and shale oil particle admixtures under the effect of a transverse magnetic field is investigated. The phase diagram, bed void fraction are studied under wide range of the operating conditions i.e., gas velocity, magnetic field intensity and fraction of the magnetic particles. It is found that the range of the stabilized regime is reduced as the magnetic fraction decreases. In addition, the bed voidage at the onset of fluidization decreases as the magnetic fraction decreases. On the other hand, Nusselt number and consequently the heat transfer coefficient is found to increase as the magnetic fraction decreases. An empirical equation is investigated to relate the effect of the gas velocity, magnetic field intensity and fraction of the magnetic particles on the heat transfer behavior in the bed.
引用
收藏
页码：1099 / 1106
页数：7
相关论文
共 41 条
  • [1] Al-Qodah Z(2001)Hydro-thermal behavior of magnetically stabilized fluidized beds Powder Technol 115 58-67
  • [2] Al-Busoul M(1984)Heat transfer between gas fluidized beds of solids particles and the surfaces of immersed heat exchanger elements: Part I Chem Eng Process 18 157-198
  • [3] Al-Hassan M(1988)Circulating magnetically stabilized bed reactors Chem Eng Commun 67 89-109
  • [4] Holger M(1960)The effect of a magnetic field on a ferromagnetic particle suspension bed Prik Magnet Latv SSR 12 215-220
  • [5] Perkle JC(1991)Fundamental and practical developments of magneto fluidized beds: a review Powder Technol 64 3-11
  • [6] Ruziska PA(2000)Phase holdup and gas-to-liquid mass transfer coefficient in magneto stabilized G–L–S airlift fermenter Chem Eng J 79 41-52
  • [7] Shulik LJ(1991)Experience of oil shale combustion in ahlistorm pyrofow CFB-boiler Oil Shale 8 194-205
  • [8] Filippov MV(1979)Fluidization: hydrodynamic stabilization with a magnetic field Science 204 57-59
  • [9] Liu YA(2004)Magnetically stabilized fluidization of a mixture of magnetic and non-magnetic particles in a transverse magnetic field Powder Technol 139 52-257
  • [10] Hamby RK(1985)Magnetically stabilized fluidization: modeling and application to mixtures Powder Technol 44 57-62
12345