Heat transfer in packed and fluidized beds by the method of cyclic temperature variations
Article first published online: 17 JUN 2004
Copyright © 1967 American Institute of Chemical Engineers
Volume 13, Issue 6, pages 1181–1187, November 1967
How to Cite
Lindauer, G. C. (1967), Heat transfer in packed and fluidized beds by the method of cyclic temperature variations. AIChE J., 13: 1181–1187. doi: 10.1002/aic.690130627
- Issue published online: 17 JUN 2004
- Article first published online: 17 JUN 2004
- Manuscript Accepted: 1 MAY 1967
- Manuscript Revised: 20 APR 1967
- Manuscript Received: 14 OCT 1966
Particle-to-gas heat transfer coefficients were determined in packed and fluidized beds with large diameter particles and high mass velocities using the cyclic temperature method.
Experimental results for packed beds were satisfactorily correlated within 10% deviation as εjh vs. NRe and were found to compare favorably with results of other experimenters obtained with much lower mass velocities and larger particles. The particle-to-gas heat transfer coefficient varied as G0.60 for the steel spheres vs. G0.66 for the tungsten spheres, and as Dp−0.44.
Heat transfer coefficients obtained at minimum fluidization were in good agreement with those obtained with packed beds. As the mass velocity was increased above that required for minimum fluidization, heat transfer coefficients remained essentially constant.