Local Heat Transfer and Modes of Particle Motion at a Horizontal Cylindrical Surface in a Circulating Fluidized Bed.

DOI Web Site Web Site 9 References
  • TAKASHIMA SHIRO
    Graduate School of Engineering, Muroran Institute of Technology
  • KATAYAMA JIRO
    Department of Mechanical Systems Engineering, Muroran Institute of Technology
  • OBATA EIJI
    Department of Applied Chemistry, Muroran Iinstitute of Technology
  • TAKAHASHI HIROSHI
    Department of Mechanical Systems Engineering, Muroran Institute of Technology

Bibliographic Information

Other Title
  • 循環流動層内の水平単一伝熱管表面における熱伝達と粒子の運動形態
  • ジュンカン リュウドウソウナイ ノ スイヘイ タンイツ デンネツカン ヒョウメ

Search this article

Abstract

Experimental study on the local heat transfer characteristics around a heater rod installed horizontally in a circulating fluidized bed 4 m-high and 0.1 m-i. d. was carried out under fast fluidization conditions. Air and FCC catalyst particle were used as a gas-solids suspension. The heater rod was electrically heated with 10μm-thick nickrome foil heater on a wooden base rod of 10 mm-o. d. In order to understand particle motion, a glass pipe was mounted to simulate the heater rod and the particle motion on the surface of this glass pipe was observed from inside of the pipe using a borescope and CCD camera.<BR>The result showed that heat convection around a pipe is influenced by solid fraction in the bed and particle motion on the heater surface, such as collision against the lower surface, formation of a stack on the upper surface, and downflow along the wall caused by core-annulus flow. The correlation between the mode of particle motion and the local heat transfer around a pipe is interpreted based on the results obtained.

Journal

References(9)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top