Comprehensive analysis of intermittent drying. A theoretical approach

• Development of intermittent drying models corresponding to two physical situations. Identification three regimes in the dynamics an drying. Operational diagram for selecting best parameters Influence mass transfer Biot number on Intermittent is a promising technique that may improve performance, when compared stationary An composed succession cycles, each them consisting active period followed by tempering period. It typically characterized parameters: duration cycles t c and ratio cycle total χ . In this work, we derive general solid material, different situations: continuous model, describe situation where liquid water continuously distributed through shrinking core material divided into humid dry zone. With these models, provide thorough analysis influence characterizing drying, over wide ranges values parameters. The results allows identification possible it one, what summarized operational could be useful select process. Notably, show one regions (with small ) corresponds high energy efficiency, without significantly increasing time if external resistance negligible. also exhibit number, Bi m , has strong drying; performance mitigated as decreases. Finally, are used shed new light experimental data from literature, regarding several products, operating conditions. investigation conditions product properties shows strategies such varying intermittency or using inherently dryer can enhance kinetics.