Modelling batch microwave heating of water

International Conference on Materials Technology and Energy

Yeong, S.P.^1 ; Law, M.C.^1 ; Vincent Lee, C.C.^1 ; Chan, Y.S.^2

Mechanical Engineering Department, Curtin University Malaysia, CDT 250, Sarawak, Miri

98009, Malaysia^1

Chemical Engineering Department, Curtin University Malaysia, CDT 250, Sarawak, Miri

98009, Malaysia^2

关键词: Comsol multiphysics;    Developed model;    Distilled water;    Electric field distributions;    Microwave cavity;    Microwave effects;    Water temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/217/1/012035/pdf
DOI  :  10.1088/1757-899X/217/1/012035

来源: IOP

【 摘 要 】

A numerical model of the microwave heating of distilled water is developed using COMSOL Multiphysics software to investigate the microwave effects on the heating rate. Three frequencies (0.915GHz, 2GHz and 2.45 GHz) have been applied in the model in order to study their influences on the water temperature. It is found that the water heats up at 2GHz and 2.45GHz, however, there is no sign of heating at 915MHz. This is supported with the figures of the electric field distribution in the microwave cavity. The results shown in the developed model is validated with the experimental results obtained at 2.45 GHz.