Experimental investigations into the adsorption enhancement in packed beds using Z-Annular flow configuration

Journal article


Yeboah, S. and Darkwa, J. (2018). Experimental investigations into the adsorption enhancement in packed beds using Z-Annular flow configuration. International Journal of Thermal Sciences . 136, pp. 121-134. https://doi.org/10.1016/j.ijthermalsci.2018.10.027
AuthorsYeboah, S. and Darkwa, J.
Abstract

Annular packed bed structures have the potential to overcome limitations of conventional fully packed bed types by offering radial distribution of airflow within them to enhance fluid-solid contact during adsorption and also to minimize pressure drops. In this paper, Z-annular flow configuration is experimentally investigated to evaluate its potential to enhance adsorption. Three typical diametrical ratios (Do/Di) corresponding to 2, 2.35 and 3.08, inferred from literature were used to investigate the adsorption performance of the Z-annular flow arrangement and compared with adsorption performance of a conventionally configured fully packed bed system of similar dimensions.

The results showed the Z-annular flow configurations did perform better by achieving bed temperature reductions averaging between 4.22 and 5.47 °C than conventional configuration types. Pressure drops were however observed to be relatively higher in the Z-annular flow configuration bed types than the conventional fully packed bed type due to the endplate in the Z-annular flow configuration impeding the airflow and subsequently causing flow reversal. Overall, the Z-annular flow configuration was found to have the potential to enhance the adsorption capacity of packed beds however further investigation on optimum parameters for this enhancement may be required.

KeywordsHeat and mass transfer; Physical adsorption; Packed beds; Pressure drop
Year2018
JournalInternational Journal of Thermal Sciences
Journal citation136, pp. 121-134
PublisherElsevier
ISSN1290-0729
Digital Object Identifier (DOI)https://doi.org/10.1016/j.ijthermalsci.2018.10.027
Web address (URL)https://www.sciencedirect.com/science/article/pii/S1290072918308329?via%3Dihub
Publication dates
Online24 Oct 2018
Publication process dates
Accepted19 Oct 2018
Deposited08 Jun 2022
Accepted author manuscript
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