Affiliations: [a] ENSEEIHT-LAPLACE, INPT (Toulouse Université), Toulouse, France | [b] ENSIACET-CIRIMAT, INPT (Toulouse Université), Toulouse, France
Correspondence:
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Corresponding author: Junwu Tao, ENSEEIHT-LAPLACE, INPT (Toulouse Université), 2 rue Charles Camichel, Toulouse 31071, France. Tel.: +33 534322384; E-mail:tao@laplace.univ-tlse.fr
Abstract: Since radiofrequency heating could be an attractive
alternative over microwave heating for processing porous media, and
intermittent heating was reported to be an optimization for homogeneous
temperature distribution in the sample, this paper, applying both
advantages, proposed a coaxial cell to research radiofrequency
intermittently heating potatoes with different phases: solid, liquid and
gas. In simulation, the sample and coaxial cell are both simplified into a
2D axis-symmetric model, which lowers the calculation requirement of
computer but maintains the calculation accuracy. The effects of different
process periods are studied and analyzed. Corresponding experiments are also
conducted to measure the temperature change during the heating process. The
simulated results compare qualitatively with the measured ones.
Keywords: Radio frequency heating, porous media, multiphysics, dielectric property
