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3. Cross-flow and mixed-flow dryers
Cross-flow air/product exchange corresponds, for example, to the case of a dryer with a perforated belt through which air flows, or a long continuous fluidized (often vibrated) bed, as shown in figure 9 . In the latter case, the drying air has a vertical upward trajectory through the vibro-fluidized product bed, while the product layer flows horizontally from the inlet (P 1 on the left) to the outlet (P 2 on the right), where it exits by D-overflow, defining a "cross-flow" circulation between air and product. Product types suitable for this dryer are described in
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Unit operations. Chemical reaction engineering
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Cross-flow and mixed-flow dryers
Hot air convection dryer and energy savings
Bibliography
Reviews
Journals dealing with the drying unit operation, independently of the product:
Chemical Engineering Science ;
Chemical Engineering Processing ;
Drying Technology Journal ;
International Journal of Thermal Science ;
Journal of Heat and Mass Transfer...
Software tools
Collection of psychrometry software http://www.linric.com
Online psychrometric calculation http://www.psychro.com
Commercial "Dryer 3 000" software [Windows, MacOSX or Unix/Linux], for calculating cereal tower dryers, by simulation using...
Events
IDS Congress: International Drying Symposium (number of the year)
International congress dedicated to drying. It takes place every two years, in a different host country. The proceedings of each congress are available for consultation.
Directory
AFSIA: French Association for Drying in Industry and Agriculture
It brings together applied drying research centers, researchers and manufacturers in France. Its headquarters can change (in 2008, INSA Lyon). It organizes or participates in conferences, and produces its own publications (AFSIA publications).
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