ABSTRACT:
In view of the influence of power change in microwave drying equipment,
the soybean with 20% initial wet base moisture content was used as the model material.
the soybean with 20% initial wet base moisture content was used as the model material.
When the power density was 0.8 W/g, 0.6 W/g and 0.4 W/g, the microwave drying was carried out with four schemes, and the drying was stopped when the burst waist rate exceeded 5%.
The results showed that in the drying process, the higher the power density, the lower the wet base moisture content of soybean, and the more energy needed. In the process of microwave drying soybeans with different power densities, the power density should not be too high at the beginning of drying. There is no need to increase power density in the later stage of drying process, and excessive power density will cause a lot of waste of energy. Reducing different power density in microwave drying stage can effectively improve energy utilization efficiency.
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