Effects of electrode configuration and orientation on electromagnetic field distribution and temperature evolution in radio frequency systems

IF 6.3 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Innovative Food Science & Emerging Technologies Pub Date : 2025-02-15 DOI:10.1016/j.ifset.2025.103970

Ozan Altin , Azin Farmanfarmaee , Huseyin Topcam , Fanbin Kong , Fahrettin Gogus , Francesco Marra , Ferruh Erdogdu

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引用次数: 0

Abstract

Electrode (potential applied electrode and ground electrodes) configuration and their orientations affect the electromagnetic field distribution within the radio frequency (RF) systems and temperature evolution inside the processed samples. Parallel flat plate and staggered through field or rod electrode systems are common electrode designs. Therefore, the objective of this study was to compare the effect of electrode configuration and orientation on electromagnetic field distribution in various RF systems and resulting temperature evolution.

For this purpose, a mathematical model was first developed and validated with the experimental data obtained from three different RF systems (two staggered through field electrode configuration systems and a parallel plate electrode configuration system). Potential values of 2300 to 14,000 V through the charged electrode were obtained at the electrode gaps of 6 to 14 cm depending upon the electrode types (rod and parallel plate) and their configurations where the potential applied electrode was placed at top or bottom of the cavity. Temperature uniformity improved with increased electrode gap, and the parallel plate electrode design provided the higher heating rates at lower electrode gaps. The heating rate was lower at higher electrode gaps while contradicted results were obtained in the staggered through field electrode designs with respect to the electrode gap. The electromagnetic field distribution also differed significantly in these systems. The results of this study are considered to have the potential to be applied in industrial scale RF processing studies specially with more than one RF cavity systems.

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射频系统中电极结构和取向对电磁场分布和温度演化的影响

电极（外加电位电极和地电极）的结构和取向影响射频（RF）系统内的电磁场分布和加工样品内的温度演变。平行平板和交错通过场或棒电极系统是常见的电极设计。因此，本研究的目的是比较电极结构和取向对各种射频系统中电磁场分布和由此产生的温度演变的影响。为此，首先建立了一个数学模型，并使用从三个不同的射频系统（两个交错通过场电极配置系统和一个平行板电极配置系统）获得的实验数据进行了验证。在6 ~ 14cm的电极间隙处，通过带电电极的电位值为2300 ~ 14000 V，这取决于电极类型（棒和平行板）及其配置，其中施加电位的电极放置在腔的顶部或底部。随着电极间隙的增大，温度均匀性得到改善，平行板电极设计在较低的电极间隙下提供了较高的加热速率。当电极间隙较大时，加热速率较低，而交错穿过电场电极设计的结果与电极间隙相反。电磁场分布也有显著差异。本研究的结果被认为具有应用于工业规模射频处理研究的潜力，特别是在多个射频腔系统中。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Innovative Food Science & Emerging Technologies 工程技术-食品科技

CiteScore

12.00

自引率

6.10%

发文量

259

审稿时长

25 days

期刊介绍： Innovative Food Science and Emerging Technologies (IFSET) aims to provide the highest quality original contributions and few, mainly upon invitation, reviews on and highly innovative developments in food science and emerging food process technologies. The significance of the results either for the science community or for industrial R&D groups must be specified. Papers submitted must be of highest scientific quality and only those advancing current scientific knowledge and understanding or with technical relevance will be considered.