In this paper, numerical simulations are performed for the drying process of potato chip in a microwave oven with multiple waveguides, with the purpose of enhancing the uniformity in temperature distribution. A simulation model is built and simulated using COMSOL Multiphysics software. The simulation model uses 5 different positions of waveguides to see whether it affects the heat distribution in the material. In order to know the final temperature result of the material after it comes out of the cavity on a moving conveyor belt, the average temperature values along the direction of the conveyor belt motion are calculated and plotted. From the results, the best waveguide position is determined to get the best temperature distribution in the potato chips.

Abstract
 1. Introduction
 2. Microwave drying system of potato chip with four waveguides
 3. Mathematical model of microwave heating
 4. Simulation of modified waveguide position
 5. Uniformity objective function
 6. Conclusions
 Acknowledgement
 References

• 제우성(경성대학교 공과대학 메카트로닉스 공학과) | Che Woo Seong