International Symposium on Antennas and Propagation


Session Number:2D03



Performance of a Continuous Fluidized Bed Microwave Paddy Drying System using Applicators with Perpendicular Slots on a Concentric Cylindrical Cavity

C. Sangdao,  S. Songsermpong,  M. Krairiksh,  


Publication Date:2008/10/27

Online ISSN:2188-5079


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This paper presents a continuous fluidized bed microwave drying system which can enhance the capacity of a system without a microwave fluidized bed. The applicator consists of perpendicular slots on a concentric cylindrical cavity excited by perpendicular waveguides. Paddies to be dried are dropped along a vertical direction into the center of the applicator while air of 60℃ from magnetron ventilation is injected in the opposite direction. The proposed system was constructed and tested. It provides paddies with the same quality as the ones from the fluidized bed drying system. The leakage power was within the safety standard. With 5.2kW power consumption, the system reduces moisture content from 24% to 14% with a capacity of 3.1kg/hour.