KINETICS OF DEHYDRATION OF VEGETABLE MATERIALS IN A VIBROFLUIDIZED BED WITH NONSTATIONARY RADIATIVE-CONVECTIVE ENERGY SUPPLY

The authors have given the results of numerical modeling and experimental study of the kinetics of dehydration, shrinkage of particles, and heat and mass transfer in a vibrofl uidized bed of materials of vegetable origin with the example of particles of carrots and celery root with convective and radiative-convective supplies of energy. A comparison has been made of the calculation results and experimental data. A change in the qualitative indices of the product depending on the regime of processing has been established. The contribution of infrared radiation and of the convective heat fl ux has been determined. The possibility of enhancing the process of dehydration and reducing its duration in the vibrofl uidized bed with radiative-convective stepwise in time energy supply has been shown.
The authors have given the results of numerical modeling and experimental study of the kinetics of dehydration, shrinkage of particles, and heat and mass transfer in a vibrofl uidized bed of materials of vegetable origin with the example of particles of carrots and celery root with convective and radiative-convective supplies of energy. A comparison has been made of the calculation results and experimental data. A change in the qualitative indices of the product depending on the regime of processing has been established. The contribution of infrared radiation and of the convective heat fl ux has been determined. The possibility of enhancing the process of dehydration and reducing its duration in the vibrofl uidized bed with radiative-convective stepwise in time energy supply has been shown.
Author:  P. V. Akulich, D. S. Slizhuk, and A. N. Nikitenko
Keywords:  heat and mass transfer in a dispersed layer, radiative-convective drying, drying of vegetable materials
Page:  522