![](/scidirimg/clear.gif)
![How to Cite or Link Using DOI (Opens New Window) How to Cite or Link Using DOI (Opens New Window)](/scidirimg/icon_doi.gif)
Copyright © 2008 Elsevier Inc. All rights reserved.
The local heat transfer mathematical model between vibrated fluidized beds and horizontal tubes
![]() | Heat transfer and bubble characteristics in a fluidized... Fuel and Energy Abstracts |
![]() Fuel and Energy Abstracts, Volume 44, Issue 4, July 2003, Page 249 ![]() |
![]() | Heat transfer from a horizontal tube immersed in a liqu... Powder Technology |
![]() Powder Technology, Volume 54, Issue 2, February 1988, Pages 137-145 N. S. Grewal, A. T. Zimmerman Abstract Experimental data were obtained for the average heat-transfer coefficient for an electrically heated horizontal tube immersed in a liquid—solid fluidized bed. Silica sand was used as the bed material and water as the fluid. The effect of particle size (dp = 0.859 – 2.524 mm), tube diameter (dt = 15.75, 26.25 mm), and fluidizing velocity (G = 10.1 – 87.6 kg/(m2.s)) was investigated. The coefficient was found to increase with superficial fluid velocity to a maximum and then decreased with further increase in fluid velocity. The coefficient also increased with increasing particle size, although it decreased for any particular particle size from the smaller to the larger tube. Experimental values of the heat-transfer coefficient were compared with those predicted from the existing correlations for vertical surfaces. These correlations were found to be inadequate to reproduce the present data. Therefore, a correlation was proposed which predicted all the present heat-transfer data within ± 10%. ![]() |
![]() | View More Related Articles |
The local heat transfer mathematical model between vibrated fluidized beds and horizontal tubes