Temperature Distribution in the Humid Powder Beds Dried in Microwave Field and Warm Air
In an experienced system (2.45 Ghz,90W) havebeen monitored the internal temperature distributions ofhumid pharmaceutical powder samples, dried inmicrowave field and combined microwave-hot air. It hasbeen found that temperature variation depends onmaterial, dielectric physical and thermal properties...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Editura Universităţii din Oradea
2008-05-01
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| Series: | Journal of Electrical and Electronics Engineering |
| Subjects: | |
| Online Access: | http://electroinf.uoradea.ro/reviste%20CSCS/documente/JEEE_2008/JEEE_2008_22_Molnar_1.pdf |
| Summary: | In an experienced system (2.45 Ghz,90W) havebeen monitored the internal temperature distributions ofhumid pharmaceutical powder samples, dried inmicrowave field and combined microwave-hot air. It hasbeen found that temperature variation depends onmaterial, dielectric physical and thermal properties ofsolvent and powder. The diagrams have been alsodependent on the layer sizes (area and thickness), a risingof area size and a decrease of thickness causing lowedtemperature of the product. The surface temperatureremains lower than central temperature during all theprocessing period, differential on sample thickness risingwith the humidity content reducing. |
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| ISSN: | 1844-6035 |