ABSTRACT: A set of CO 2 cold trap microwave drying equipment was designed, and the geometrical structure of vacuum microwave drying chamber was studied based on Fluent. The analysis results of velocity and pressure diagrams of gas in drying chamber were discussed. Finally, it was concluded that the drying chamber model met the test requirements and the drying experiment of purple potato was carried out on the device with good results.
Key words: Vegetable microwave drying; Geometric structure; Vacuum microwave drying; CO 2 cold trap
Our country has a large population, and the output and demand of fruits and vegetables are huge, but the loss caused by the transportation of fruits and vegetables has not been solved. Because of the advanced storage and drying technology, the loss rate after harvesting in developed countries is only 1.7%-5%.
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