The analysis of “power window” induced by thermal effect during the microwave heating

The “windows” are often considered as the evidence of microwave non-thermal effect. Here, enzyme catalysis acrylonitrile reaction was carried out and the coupled multiphysics field equations were solved by finite difference time domain (FDTD) method. The temperature curves can be obtained under the different power. Then, the results calculated by chemical reaction kinetic show that the power window of product concentration can be induced by thermal effect. The power window cannot be a criterion of microwave non-thermal effects.