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Experimental analysis of a multi-magnetron microwave dryer prototype: electromagnetic field distribution and dielectric characterisation using apple pomace Cover

Experimental analysis of a multi-magnetron microwave dryer prototype: electromagnetic field distribution and dielectric characterisation using apple pomace

Current Agronomy
Volume 54 (2025): Issue 2 (June 2025)
By: Paulina Lipińska-Palka,  Włodzimierz Przybylski,  Rafał Perz,  Artur Abratański and  Igor Dąbrowski  
Open Access
|Aug 2025

Figures & Tables

Figure 1.

Components of the microwave dryer body.

Figure 2.

View of final microwave dryer with the covers removed.

Figure 3.

A: Measured distribution of the total magnetic field (thermal, linear scale); B: Spatial plot of the total magnetic field intensity (linear scale).

Figure 4.

A: Measured distribution of the electric field (thermal, linear scale); B: Spatial plot of the electric field intensity (thermal, logarithmic scale).

Figure 5.

A: Measured dielectric permittivity of apple pomace over a wide frequency range; B: Measured dielectric loss tangent of apple pomace over a wide frequency range.

Figure 6.

Penetration depth of electromagnetic waves into the dried material.

Figure 7.

A: Fragment of the electromagnetic field distribution inside the microwave dryer chamber; B: Magnetron matching for a dryer filled with wet or dry feed material.
DOI: https://doi.org/10.2478/cag-2025-0007 | Journal eISSN: 3071-740X | Journal ISSN: 2081-2787
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Language: English
Page range: 70 - 82
Submitted on: May 7, 2025
|
Accepted on: Jul 22, 2025
|
Published on: Aug 30, 2025
Published by: Institute of Soil Science and Plant Cultivation
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year
Keywords:
microwave drying,
apple pomace,
electromagnetic field distribution,
moisture content,
sustainable biomass utilisation
Related subjects:
Life sciences,
Plant science,
Ecology

© 2025 Paulina Lipińska-Palka, Włodzimierz Przybylski, Rafał Perz, Artur Abratański, Igor Dąbrowski, published by Institute of Soil Science and Plant Cultivation
This work is licensed under the Creative Commons Attribution 4.0 License.

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