The Use of Microwave Drying Process to the Granular Materials

Abstract

The use of electro thermal technologies based on microwave energy represents an important step in the development of new innovative solutions. The numerical modelling allows to study the influence of the high frequency electromagnetic and thermal field on the dielectric materials during the drying process before achieving practical installation. So, when is developed the experimental model will be already known some of the phenomena that characterize the system, being eliminated a number of unknown issues. This paper describes experiments conducted to gather data on production parameters in order to improve the stored corn seed quality. The interpretation and dissemination of results triggers the description of "recipes" for drying corn seeds. The described method is flexible and can be applied to near any agricultural seeds in further researches. Keywords-Microwave energy; microwave field; experimental models; laboratory models; drying and seed treatment

Reduction of the Humidity Contained in the Harvest Cereals by the Means of in High Frequency Electromagnetic Field Processing

“…Currently, the trends are to develop new technologies that use microwaves and radio frequency that produce the inverse temperature gradient, so as the temperature is produced directly in the sample instead of at its surface [5], [7]. The energy absorption of the microwaves in the sample and the generation of the thermal field in its, is mainly due to the presence of water in free form.…”

“…Thus, the reduction of the moisture content of the oats, without a qualitative deterioration of it, is a problem of interest, having a high degree of complexity. The reduction of the moisture content is achieved by exposing the sample to a thermal field [6,7], which implies the continuous control of the temperature values of the thermal field so as the maximum value of the temperature during drying do not exceed 70 degrees.…”