Radio Frequency and Microwave Drying Systems
topic
RF dielectric dryers use high-frequency electromagnetic fields at 13.56 or 27.12 megahertz to selectively heat water molecules within the textile by dielectric loss heating that penetrates the full fabric thickness simultaneously, providing volumetric heating that dries the fabric interior without the surface-drying limitation of hot air convection, enabling 50 to 70 percent energy reduction for drying thick fabric structures and yarn packages requiring moisture equalisation.
Role
Provides selective water heating for energy-efficient drying of thick textile structures and yarn packages where conventional surface-drying methods require extended time for moisture to diffuse from the interior to the evaporation surface, with RF drying being particularly effective for package dyeing where moisture removal from dense yarn packages by conventional hot air requires excessively long drying times that RF volumetric heating reduces substantially.