Please use this identifier to cite or link to this item: https://doi.org/10.1081/DRT-120021850
Title: A parametric study of the gas flow patterns and drying performance of co-current spray dryer: Results of a computational fluid dynamics study
Authors: Huang, L.
Kumar, K.
Mujumdar, A.S. 
Keywords: Atomization
CFD
Evaporation intensity
Fluent
Heat consumption intensity
Heat transfer
Mass transfer
Modelling
Particle residence time
Two phase flow
Issue Date: Jul-2003
Source: Huang, L., Kumar, K., Mujumdar, A.S. (2003-07). A parametric study of the gas flow patterns and drying performance of co-current spray dryer: Results of a computational fluid dynamics study. Drying Technology 21 (6) : 957-978. ScholarBank@NUS Repository. https://doi.org/10.1081/DRT-120021850
Abstract: A computational fluid dynamic study was carried out to investigate airflow pattern, temperature, and humidity profile at different levels in the drying chamber. Good agreement was obtained with published experimental data. The effects of operating pressure, heat loss from the chamber wall and inlet air conditions on the gas flow pattern, droplet trajectories, and overall dryer performance also were investigated. Results are presented and discussed in terms of the gas velocity, temperature, and humidity profiles within the chambers. The volumetric evaporation values, heat transfer intensity, and thermal energy consumption per unit evaporation rate were computed and compared for drying of a 42.5% solids solution in a spray chamber 2.215 m in diameter with a cylindrical top section 2.005 m high and a bottom cone 1.725 m high. Wall regions subject to formation of undesirable deposits are also identified.
Source Title: Drying Technology
URI: http://scholarbank.nus.edu.sg/handle/10635/54690
ISSN: 07373937
DOI: 10.1081/DRT-120021850
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