Accordion microwave oven for uniformity and efficiency heating

Abstract

Conventional microwave oven heating has the problem of poor heating uniformity and low heating efficiency. A novel microwave oven heating model has been proposed for improving heating uniformity by making the electric field in the microwave oven drastically change by changing the geometry of the microwave oven during the heating process. The transformation optics method is used to solve the computational difficulties caused by the continuous change of the mesh during the motion. Finally, the experiment verified the correctness of the simulation. In addition, important factors affecting heating efficiency were discussed. K E Y W O R D Saccordion microwave oven,

Effects of Metal Boundary Stretching and Sample Translational Motion on Microwave Heating

“…Figure 2b depicts the actual stretched position of the upper wall of the microwave oven (The coordinate of the upper surface is Z c ). The coordinate transformation is set as [27]:…”

“…Figure 2b depicts the actual stretched position of the upper wall of the microwave oven (The coordinate of the upper surface is Zc). The coordinate transformation is set as [27]: Based on the coordinate transformation equations, the tensor parameters in the optical transformation region Ω can be obtained [27]:…”

“…J is the Jacobian tensor: Based on the coordinate transformation equations, the tensor parameters in the optical transformation region Ω can be obtained [27]:…”

Design of Large-Scale Microwave Cavity for Uniform and Efficient Plastic Heating

“…In traditional heating processes, the temperature difference between the surface and inside of the target material is a problem. However, in the microwave heating process hot spots with high temperature in specific areas, caused by the intrinsic characteristics of microwaves, degrade the quality of the target material and burn or explode the material in severe cases [ 17 ]. To address this problem, numerous studies have proposed several methods to improve the uniformity of heating [ 18 ].…”

“…However, focusing only on heating efficiency and not considering uniform heating can lead to a serious result. For example, overheating regions deteriorate the performance of the reactor and the quality of the material [ 17 ]. Thus, it is necessary to increase heating uniformity and energy efficiency simultaneously in industrial sites.…”