MICROWAVE PROCESSING OF FOOD SAMPLES: INFLUENCE OF CAVITY DESIGN AND DIELECTRIC PROPERTIES

被引：1
|
作者：
Albuquerque, C. D. [1 ]
Curet, S. [1 ]
Boillereaux, L. [1 ]
机构：
[1] UMR GEPEA CNRS 6144 ONIRIS, CS 82225, F-44322 Nantes, France
来源：
17TH INTERNATIONAL CONFERENCE ON MICROWAVE AND HIGH FREQUENCY HEATING (AMPERE 2019) | 2019年
关键词：
microwave heating; modelling; impedance matching; temperature distribution;
D O I：
10.4995/Ampere2019.2019.9911
中图分类号：
Q6 [生物物理学];
学科分类号：
071011 ;
摘要：
Microwave-material interactions and electromagnetic propagation phenomena are important to optimize the microwave heating process of food samples. In this study, a 3D numerical modelling of a TE10 rectangular waveguide including microwave antenna and impedance matching elements is proposed. The microwave applicator is aimed to process both solid and liquid food samples. The model illustrates the standing wave patterns and microwave absorbed power within the cavity by taking into account the influence of the screw tuner, quartz windows, shorting plunger, and additional dielectric support plates. The results reveal the importance to consider the real cavity design and the precise dielectric characterization to predict accurate temperature profiles within the food product during the microwave heating. Such a model can be now be used to optimize the food sample geometry to achieve minimum reflected power and better heating uniformity.
引用
收藏
页码：261 / 268
页数：8
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