热科学学报（英文版）2008，Vol.17Issue(1)：77-83,7.
Dynamic Force Reduction and Heat Transfer Improvement for Horizontal Tubes in Large-Particle Gas-Fluidized Beds
Dynamic Force Reduction and Heat Transfer Improvement for Horizontal Tubes in Large-Particle Gas-Fluidized Beds
Yusumi Nagahashi 1John R.Grace 2Kok-Seng Lim 3Yutaka Asako4
作者信息
- 1. Dept. Mech. Eng., Kochi National College of Technol., Kochi, JAPAN
- 2. Dept. Chem. Biological Eng., The University of British Columbia, Vancouver, CANADA
- 3. CSIRO Minerals, Victoria, AUSTRALIA
- 4. Dept. Mech. Eng., Tokyo Metropolitan University, Tokyo, JAPAN
- 折叠
摘要
Abstract
The effects of tube bank configuration on forces and heat transfer were investigated for both two-dimensional and three-dimensional gas fluidized beds. Effective dynamic forces and heat transfer coefficients were measured for several tube bank configurations, and it was found that the average forces ate smaller than for a single tube. The heat transfer coefficient can be increased by providing sufficient space for particles to descend around both sides of the tube bank. The results provide useful guidelines for optimizing the configuration of tube banks to achieve high heat transfer coefficients while reducing tube erosion due to dynamic forces.关键词
fluidized beds, forces, heat transfer, tube arrangement, sofid circulationKey words
fluidized beds, forces, heat transfer, tube arrangement, sofid circulation分类
数理科学引用本文复制引用
Yusumi Nagahashi,John R.Grace,Kok-Seng Lim,Yutaka Asako..Dynamic Force Reduction and Heat Transfer Improvement for Horizontal Tubes in Large-Particle Gas-Fluidized Beds[J].热科学学报（英文版）,2008,17(1):77-83,7.
