Heat transfer to a horizontal cylinder in a shallow bubble column
Name
IJHMT_2014.pdf
Size
2.41 MB
Format
Adobe PDF
Checksum (MD5)
2c9492d600af405a36fd9391da8dbb1c
Author(s)
Tow, Emily W.
Lienhard, John H
Date Issued
August 2014
Journal
International Journal of Heat and Mass Transfer
Publisher
Elsevier
Citation
ow, Emily W., and John H. Lienhard V. “Heat Transfer to a Horizontal Cylinder in a Shallow Bubble Column.” International Journal of Heat and Mass Transfer 79 (December 2014): 353–361.
Version
Author's final manuscript
Abstract
Heat transfer coefficient correlations for tall bubble columns are unable to predict heat transfer in shallow bubble columns, which have unique geometry and fluid dynamics. In this work, the heat transfer coefficient is measured on the surface of a horizontal cylinder immersed in a shallow air–water bubble column. Superficial velocity, liquid depth, and cylinder height and horizontal position with respect to the sparger orifices are varied. The heat transfer coefficient is found to increase with height until reaching a critical height, and a dimensionless, semi-theoretical correlation is developed that incorporates superficial velocity, liquid properties, and height. Additionally, the more minor effects of flow regime, column region, and bubble impact are discussed. Notably, the heat transfer coefficient can be as high in the region of bubble coalescence as in the bulk of the column, but only if bubbles impact the cylinder. The correlation and discussion provide a framework for modeling and designing shallow, coil-cooled bubble columns.
MIT Department
Massachusetts Institute of Technology. Abdul Latif Jameel World Water & Food Security Lab
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1016/j.ijheatmasstransfer.2014.08.021
