Absrtact: Microwave drying test-bed and electromagnetic heating drying test-bed, which can accurately measure output and reflection power, were used to study the microwave-electromagnetic combined drying process characteristics of peony. MatLab was used to fit the results of microwave and electromagnetic drying, and the best combination point of theory was found, which was verified by experiments.
The results showed that the optimum technology of microwave-electromagnetic combined drying of peony flowers was as follows: firstly, the moisture content of dry base of fresh peony petals was reduced to 99% by microwave drying equipment (power density was 5.97 W/g); then, the petals were dried to constant weight by electromagnetic drying (temperature was 60 C).
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