Multiscale Modeling of Superheated Steam Drying of Particulate Materials |
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| Authors: | Kieu Hiep Le Thi Thu Hang Tran Nguyen An Nguyen Abdolreza Kharaghani |
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| Affiliation: | 1. Hanoi University of Science and Technology, Heat Engineering Department, School of Heat Engineering and Refrigeration Engineering, 1st Dai Co Viet, Hai Ba Trung, Hanoi, Vietnam;2. Otto von Guericke University Magdeburg, Thermal Process Engineering, Universitätplatz 2, 39106 Magdeburg, Germany |
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| Abstract: | A multiscale model for predicting the superheated steam drying behavior of a packed bed filled with particulate porous material is presented. By using a reaction engineering approach (REA) a semi-empirical model is developed that can describe the heat and mass transfer between a single particle and the surrounding drying agent. By analogy between superheated steam drying and hot air drying, the relative activation energy of the REA model is formulated. Next, the single-particle drying model is fed into a continuum-scale model of a packed bed. The temperature and moisture content of the solid and the vapor temperature are successfully predicted by the bed-scale model. To endow the bed-scale model with predictive capabilities, simulation results are compared with experimental literature data. |
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| Keywords: | Multiscale modeling Packed beds Reaction engineering approach Single ceramic particle Superheated steam drying |
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