Simulation and validation of radio frequency heating with conveyor movement

Chen, Long; Huang, Zhi; Wang, K.; Li, W.; Wang, S.

doi:10.1080/09205071.2015.1121841

Cited by 40 publications

(6 citation statements)

References 43 publications

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“…The temperature profile agreed well with simulation results in most places, but at the corners there was a difference of 7 • C. A sensitivity study was conducted and showed that dielectric properties and electrode voltage are the two major influencing factors to heating uniformity. Chen et al (2016) simulated the conveyor belt movement during RF heating. The authors assumed an RF power ratio as a function of heating time and sample position during movement.…”

Section: Computer Modelingmentioning

confidence: 99%

Radio-Frequency Applications for Food Processing and Safety

Jiao

Tang

Wang

et al. 2018

Annu. Rev. Food Sci. Technol.

128

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Radio-frequency (RF) heating, as a thermal-processing technology, has been extending its applications in the food industry. Although RF has shown some unique advantages over conventional methods in industrial drying and frozen food thawing, more research is needed to make it applicable for food safety applications because of its complex heating mechanism. This review provides comprehensive information regarding RF-heating history, mechanism, fundamentals, and applications that have already been fully developed or are still under research. The application of mathematical modeling as a useful tool in RF food processing is also reviewed in detail. At the end of the review, we summarize the active research groups in the RF food thermal-processing field, and address the current problems that still need to be overcome.

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Section: Computer Modelingmentioning

confidence: 99%

Radio-Frequency Applications for Food Processing and Safety

Jiao

Tang

Wang

et al. 2018

Annu. Rev. Food Sci. Technol.

128

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“…Table 1 lists these values of bulk wheat, polypropylene, aluminum and air in the computer model. Although Table 1 Electrical and thermo-physical properties of bulk materials used in computer simulation (adapted from Chen et al (2015) Li et al (2010). d .…”

Section: Model Parametersmentioning

confidence: 99%

A strategy to simulate radio frequency heating under mixing conditions

Chen

Wang

et al. 2015

Computers and Electronics in Agriculture

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“…However, this rule was contrary to hot water heating [50] . The standard deviation of sample temperatures in the section c was smaller than that in the section b, suggesting that continuous moving and multiple mixing could effectively reduce the temperature variations and improve the RF heating uniformity [18,51] . Table 5 provides a detailed comparison of the temperature distribution and heating uniformity index values in RF treated three samples under different operational conditions and positions in the screw conveyor.…”

Section: Electric Current Under Different Electrode Gapsmentioning

confidence: 94%

Developing a screw conveyor in radio frequency systems to improve heating uniformity in granular products

Zhou

Wang

2019

International Journal of Agricultural and Biological Engineering

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Radio frequency (RF) treatments have been increasingly studied due to the rapid heating, deep power penetration depth and high energy efficiency. However, the major challenges for commercial RF applications are non-uniform and runaway heating. The purpose of this study was to improve RF heating uniformity in three granular products (soybean, corn, and peanut) using a custom-made screw conveyor with sample movement and mixing. The results showed that soybean, corn and peanut samples in the screw conveyor were RF heated in a similar heating rate under the selected electrode gap and screw rotation speed, and the variations between the highest and lowest temperatures in the three samples were all clearly reduced as compared to the stationary treatments. The RF heating uniformity index was also reduced for soybean, corn, and peanut during and after the RF treatment. Therefore, the screw conveyor could improve RF heating uniformity due to stable, continuous, uninterrupted movement and mixing of samples. The small-scale screw conveyor used in RF systems would provide a solid basis for further large-scale industrial applications.

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Simulation and validation of radio frequency heating with conveyor movement

Cited by 40 publications

References 43 publications

Radio-Frequency Applications for Food Processing and Safety

Radio-Frequency Applications for Food Processing and Safety

A strategy to simulate radio frequency heating under mixing conditions

Developing a screw conveyor in radio frequency systems to improve heating uniformity in granular products

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