Optimization of the microwave applicator

Abstract

The optimization of the operation of a microwave (MW) applicator partially filled with an absorbing medium aims to ensure uniform temperature distribution throughout the material layer. This is achieved by determining the relationship between changes in the cross-sectional dimensions of the applicator’s transmission line and the working wavelength. The dielectric properties of the medium ( 2 and tan 2 depend on temperature, which can lead to possible uneven heat generation during energy absorption.) The optimization process follows these steps: determine the dependence of 2( ) and tanδ(τ) the wavelength; over the working temperature range; select the waveguide dimensions based on δ 2 set the generator power and calculate the temperature distribution over coordinates and time; verify desired 2 that the condition′ < 0.02; adjust the time interval δτ if necessary; repeat calculations until the temperature and processing time are reached; adjust the generator power to achieve optimal heating conditions. This optimization process ensures uniform heating of the material, minimizes heat losses, and maintains the stability of the technological process.