Computational Fluid Dynamics for Multistage Adsorption Dryer Design |
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| Authors: | M. Djaeni P. V. Bartels J. P. M. Sanders G. van Straten A. J. B. van Boxtel |
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| Affiliation: | 1. Systems and Control Group, Department of Agrotechnology and Food Science , Wageningen University , Wageningen, The Netherlands mohamad.djaeni@wur.nl;3. Systems and Control Group, Department of Agrotechnology and Food Science , Wageningen University , Wageningen, The Netherlands |
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| Abstract: | Two-dimensional computational fluid dynamics calculations for multistage zeolite drying are performed for two dryer configurations (1) a continuous moving bed zeolite dryer and (2) a discrete bed zeolite dryer. The calculations concern drying of tarragon (Artemisia dracunculus L.) as an herbal product. The results reveal the profiles of water, vapor, and temperature in dryer, adsorber, and regenerator in the flow directions. The thermal efficiency ranges between 80 and 90% and is close to overall model calculations. The performance of continuous moving bed zeolite dryer is the best. Residence time of air, product, and zeolite are in accordance to other drying systems. |
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| Keywords: | Adsorbent drying CFD model Moving bed dryer Regeneration Tarragon Thermal efficiency Zeolite |
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