Experimental Analysis of Heat Transfer inside Packed Beds of Soybean Seeds

Abstract:

Several applications in chemical industry use randomly packed bed of particles, such as particulate separation systems, chemical reactors or fixed bed drying. Fluid dynamic behavior, heat and mass transfer, in addition to structural properties of the bed are fundamental issues to design of these processes. Several studies about heat transfer in packed beds aiming drying application have been performed in order to contribute with the process. Seeds drying temperature is especially important for the seeds quality indices and must be carefully controlled in drying process. In this paper temperature profiles experimentally obtained in a packed bed composed by soybean seeds are presented and discussed. Axial profiles of temperature were applied for obtaining effective thermal conductivity following previous studies from literature. The results indicate that thermal homogeneity can be achieved inside the bed for controlled air flow conditions. Axial effective thermal conductivity presented results in agreement with previous studies from literature.

• Periodical: Materials Science Forum (Volumes 727-728)
• Pages: 1818-1823
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.727-728.1818
• Online since: August 2012
• Authors: G.F.M.V. Souza, R. Béttega, R.F. Miranda, O.S.H. Mendoza, M.A.S. Barrozo
• Keywords: Drying, Packed Bed, Soybean Seeds

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