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Drying Technology Assisted by Nonthermal Pulsed Filamentary Microplasma Treatment: Theory and Practice

Department of Food Processing and Equipment, Kuban State University of Technology, Moskovskaya 2, 350072 Krasnodar, Russia
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ChemEngineering 2019, 3(4), 91; https://doi.org/10.3390/chemengineering3040091
Received: 25 August 2019 / Revised: 10 October 2019 / Accepted: 27 November 2019 / Published: 2 December 2019
Nonthermal pulsed filamentary microplasma treatment for drying is a nonthermal technology with promising perspectives to dehydrate plant agricultural materials. The modified set of Luikov’s equations for heat, mass and pressure transfer, has been used to analyze nonthermal pulsed filamentary microplasma treatment effects. The finite element method in combination with the step-by-step finite-difference method for a coupled system of differential equations in partial derivatives was used for numerical simulation of heat, humidity and pressure potentials transfer. The drying time of samples treated by nonthermal pulsed filamentary microplasma treatment assisted by thermionic emission was reduced up to 20.6% (5 kV/cm; 1200 discharges) in comparison to intact tissue. The effect of the obtained approach is very useful for studying process mechanisms and for explaining nonthermal pulsed filamentary microplasma treatment effects. Refined transfer kinetic coefficients from a set of equations based on experimental drying curve can be used for the quantitative determination of thermodynamic coefficients. The agreement of the simulation data with the analytical equation and experimental results is satisfactory (discrepancy less than 3%). Obtained results showed that the proposed model with the refined transfer kinetic coefficients adequately describe the experimental data. View Full-Text
Keywords: heat transfer; mass transfer; drying; pulsed electric field; differential equation; potential; numerical simulation; optimization heat transfer; mass transfer; drying; pulsed electric field; differential equation; potential; numerical simulation; optimization
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MDPI and ACS Style

Shorstkii, I.; Koshevoi, E. Drying Technology Assisted by Nonthermal Pulsed Filamentary Microplasma Treatment: Theory and Practice. ChemEngineering 2019, 3, 91. https://doi.org/10.3390/chemengineering3040091

AMA Style

Shorstkii I, Koshevoi E. Drying Technology Assisted by Nonthermal Pulsed Filamentary Microplasma Treatment: Theory and Practice. ChemEngineering. 2019; 3(4):91. https://doi.org/10.3390/chemengineering3040091

Chicago/Turabian Style

Shorstkii, Ivan; Koshevoi, Evgeny. 2019. "Drying Technology Assisted by Nonthermal Pulsed Filamentary Microplasma Treatment: Theory and Practice" ChemEngineering 3, no. 4: 91. https://doi.org/10.3390/chemengineering3040091

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