Modeling of the Radio Frequency Electric Field Strength Developed During the Rf Assisted Heat Pump Drying of Particulates

A new "boundary value" approach to model the radio frequency (rf) electric field strength during the tf assisted drying of particulate materials has been developed and validated with experimental data. Material dielectric data at varying moisture contents and elevated temperatures were mea...

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Bibliographic Details
Published in:The Journal of microwave power and electromagnetic energy 1998-01, Vol.33 (3), p.167-177
Main Authors: Marshall, M.G., Metaxas, A.C.
Format: Article
Language:English
Subjects:
Batch drying
Combination dryer
Dielectric properties
Drying
Electric field strength
Heat pumps
Modeling
Particulate drying
Radio frequency drying
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Summary:A new "boundary value" approach to model the radio frequency (rf) electric field strength during the tf assisted drying of particulate materials has been developed and validated with experimental data. Material dielectric data at varying moisture contents and elevated temperatures were measured in a novel co-axial test cell and used in the analysis. Experimental drying results are presented showing how the simultaneous application of if heating complements heat pump drying, not only increasing drying rate, but also increasing the heat pump coefficient of performance.
ISSN:0832-7823
DOI:10.1080/08327823.1998.11688373