Combined convective and microwave assisted drying: Experiments and modelling
Artikel i vetenskaplig tidskrift, 2012

The drying process is largely used in many different industrial applications, such as treatment of foods, production of cosmetics and pharmaceuticals, manufacturing of paper, wood and building materials, polymers and so on. Physical and mathematical models can constitute useful tools to establish the influence of the main process variables on the final product quality, in order to apply an effective production control. In this work, simulation model was developed to describe combined convective/microwave assisted drying. In particular, a multi-physics approach was applied to take into account heat and two mass balances (for liquid water and for water vapor) and Maxwell’s equations to describe electromagnetic field propagation. Potato matrix was selected as food material; a waveguide with a rectangular cross section, equipped with a hot air circulator device, was used as microwave applicator. The proposed model was found able to describe the process, being thus a useful tool for design and management of the process itself.

microwave convective drying


Drying process


Loredana Malafronte

Universita degli Studi di Salerno

G. Lamberti

Universita degli Studi di Salerno

A.A. Barba

Universita degli Studi di Salerno

Birgitta Wäppling-Raaholt

SIK – Institutet för Livsmedel och Bioteknik AB

Emma Holtz

SIK – Institutet för Livsmedel och Bioteknik AB

Lilia Ahrné

SIK – Institutet för Livsmedel och Bioteknik AB

Journal of Food Engineering

0260-8774 (ISSN)

Vol. 112 4 304-312



Annan fysik

Elektroteknik och elektronik



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