Mathematical support of the drying process as a pre – stage of the new generation CAD dryers design

Abstract

Objective. The aim of the study is the mathematical support of the vacuum microwave process, the design of the installation in CAD, the manufacture of a prototype, the modeling of temperature and moisture content fields.Method. The mathematical model was implemented numerically by the finite element method in the Comsol Multiphysics environment on a grid of 3678 elements, using its deformation to change the height.Result. Experimental data were obtained on a laboratory vacuum microwave installation, which made it possible to identify patterns in the drying of foamed materials. The drying parameters, as well as the properties of the initial and dried material, were analyzed. A pilot-type vacuum plant was designed using CAD and a working prototype was made. The modeling of the temperature field and moisture content zones in the dynamics of the process has been carried out.Conclusion. Mathematical modeling of the drying process makes it possible to determine the temperature fields and moisture content of the material with a high accuracy with a relatively small amount of necessary experimental data.

Keywords

• designing
• microwave installation
• drying
• foamed materials
• vacuum
• modeling