Jeon, S.; Kim, J.; Yang, D. Design of Large-Scale Microwave Cavity for Uniform and Efficient Plastic Heating. Polymers 2022, 14, 541. https://doi.org/10.3390/ polym14030541
Jeon, S.; Kim, J.; Yang, D. Design of Large-Scale Microwave Cavity for Uniform and Efficient Plastic Heating. Polymers 2022, 14, 541. https://doi.org/10.3390/ polym14030541
Jeon, S.; Kim, J.; Yang, D. Design of Large-Scale Microwave Cavity for Uniform and Efficient Plastic Heating. Polymers 2022, 14, 541. https://doi.org/10.3390/ polym14030541
Jeon, S.; Kim, J.; Yang, D. Design of Large-Scale Microwave Cavity for Uniform and Efficient Plastic Heating. Polymers 2022, 14, 541. https://doi.org/10.3390/ polym14030541
Abstract
To reduce the carbon emissions during heating in the manufacturing process, microwaves have attracted significant attention. Microwave has a lot of advantages rather than traditional heating method such as rapid heating, lower thermal damage and eco-friendly process. In order to apply microwaves to manufacturing process, uniform and efficient heating is required. We have analyzed the effect of various design parameters such as cavity heights, the application of the reflector, and the number and positions of waveguides for uniform and efficient heating by numerical simulation and verified that by experiment. The results showed that a slight change in the cavity height altered the electromagnetic field distribution and heating parameters, such as the coefficient of variance and power absorption efficiency. With reflectors installed, uniform heating was achieved and power absorption was improved, with the spherical reflector showing the maximum efficiency. The use of double waveguides heated the target material in a uniform manner. An increase in the power supply also led to uniform heating. This large-scale analysis will be helpful in applying microwaves to actual industrial sites.
Keywords
microwave heating; cavity; reflector; double-waveguide; uniform heating; high heating efficiency
Subject
Engineering, Industrial and Manufacturing Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
