caa a22 4500 463163257 CHVBK 20180406164754.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s11242-006-9013-3 doi (NATIONALLICENCE)springer-10.1007/s11242-006-9013-3 Microwave drying of various shape particles suspended in an air stream [Elektronische Daten] [Michal Araszkiewicz, Antoni Koziol, Anita Lupinska, Michal Lupinski] Fluidization is an efficient way to dry granular materials. Incorporating microwave heating into the fluidization makes the overall drying process shorter, and the quality of the final products can be improved. However, in order to understand the mechanisms of water removal, an exact knowledge of changes inside the dried material is necessary. The temperature and moisture distribution pattern within the heated material should be identified and analyzed. Unfortunately, the microwave environment makes the measurements very difficult. This paper gives new information on the temperature distribution inside small particles of various shapes dried with microwaves. The tests were carried out in a laboratory-scale, fluid-bed dryer equipped with a microwave source. Five different shapes were examined: sphere, cylinder, half-cylinder, rectangular prism, and prism with triangle base. All particles tested were suspended in an air stream and heated with microwaves. The internal temperature distribution has been analyzed in each case. The rate of drying is also presented and discussed for every case tested. Springer Science+Business Media B.V., 2006 Microwaves nationallicence Drying nationallicence Fluidization nationallicence Granular materials nationallicence Temperature distribution nationallicence Heat transfer nationallicence E : Electric field strength, V/m nationallicence f : Frequency, Hz nationallicence P : Power, W nationallicence X : Moisture fracture nationallicence Greek nationallicence $$\varepsilon$$ : Porosity nationallicence $${\varepsilon}''$$ : Microwave energy dissipation coefficient, F/m nationallicence $$\varepsilon_0$$ : Dielectric constant in vacuum, 8,85· 10−12 F/m nationallicence π : Pi number nationallicence Subscripts nationallicence l : Liquid nationallicence s : Solid nationallicence Araszkiewicz Michal Division of Chemical and Biochemical Processes, Faculty of Chemistry, Wroclaw University of Technology, ul. Norwida 4/6, 50-373, Wroclaw, Poland aut Koziol Antoni Division of Chemical and Biochemical Processes, Faculty of Chemistry, Wroclaw University of Technology, ul. Norwida 4/6, 50-373, Wroclaw, Poland aut Lupinska Anita Division of Chemical and Biochemical Processes, Faculty of Chemistry, Wroclaw University of Technology, ul. Norwida 4/6, 50-373, Wroclaw, Poland aut Lupinski Michal Division of Chemical and Biochemical Processes, Faculty of Chemistry, Wroclaw University of Technology, ul. Norwida 4/6, 50-373, Wroclaw, Poland aut Transport in Porous Media Kluwer Academic Publishers 66/1-2(2007-01-01), 173-186 0169-3913 66:1-2<173 2007 66 11242 https://doi.org/10.1007/s11242-006-9013-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11242-006-9013-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Araszkiewicz Michal Division of Chemical and Biochemical Processes, Faculty of Chemistry, Wroclaw University of Technology, ul. Norwida 4/6, 50-373, Wroclaw, Poland aut NATIONALLICENCE 700 1- Koziol Antoni Division of Chemical and Biochemical Processes, Faculty of Chemistry, Wroclaw University of Technology, ul. Norwida 4/6, 50-373, Wroclaw, Poland aut NATIONALLICENCE 700 1- Lupinska Anita Division of Chemical and Biochemical Processes, Faculty of Chemistry, Wroclaw University of Technology, ul. Norwida 4/6, 50-373, Wroclaw, Poland aut NATIONALLICENCE 700 1- Lupinski Michal Division of Chemical and Biochemical Processes, Faculty of Chemistry, Wroclaw University of Technology, ul. Norwida 4/6, 50-373, Wroclaw, Poland aut NATIONALLICENCE 773 0- Transport in Porous Media Kluwer Academic Publishers 66/1-2(2007-01-01), 173-186 0169-3913 66:1-2<173 2007 66 11242 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer