Optimization of Energy Consumption in Intermittent Drying of Clay Using a Central Composite Design

This study focuses on optimizing supplied power during the intermittent drying of clay, using a central composite design (CCD) of experiments. The effects of three key process parameters, drying temperature ( T ), air velocity ( V ), and intermittence ratio (IR), were systematically investigated to evaluate their influence on supplied power, drying performance indicator (DPI), and moisture diffusivity of clay material. These quantitative variables were selected based on a preliminary study and varied across three levels. A statistical modeling approach was employed to develop predictive equations and identify optimal operating conditions. The results revealed significant interactions between the studied parameters and highlighted the conditions under which supplied power could be minimized without compromising DPI. This work provides valuable insights for improving the energy efficiency of industrial intermittent drying processes involving clay materials.