Reverse Methodology to Identify Moisture Diffusivity During Air-Drying of Foodstuffs

Process of Producing Parboiled Rice with Different Colors by Fluidized Bed Drying Technique Including Tempering

“…Several works used the optimization method to find the constant parameters of effective moisture variations with either moisture content or drying temperature (Roca et al 2007;Lambert et al 2015). In this work, the COMSOL Mutiphysics 4.4 simulation program (COMSOL Inc.) based on the finite element method was used and the number of tetrahedral mesh of 5483 elements was found to be enough to give mesh-independent results.…”

Characterization and modeling of cooling and drying of pellets for animal feed

“…This study continues previous work that discussed three different approaches for the identification of effective moisture diffusivity D ef f . (Lambert et al, 2015b). Here, these three strategies were used for the identification of the effective moisture diffusivity of pellets as summarized in table 4.…”

“…The validation set contained both thin-layer and deep-bed drying kinetics. As explained in a previous study (Lambert et al, 2015b), in this strategy, the mass variation of the product is the only experimental data used to identify the effective moisture diffusivity. However, using only mass-transfer-related information is problematic since, in drying, this transfer is strongly coupled to energy change.…”

“…However, using only mass-transfer-related information is problematic since, in drying, this transfer is strongly coupled to energy change. In a deep-bed experiment, though, inlet and outlet air temperatures and relative humidities may be recorded in order to provide energy-related data (Lambert et al, 2015b). By providing data on both heat and mass transfers, an approach based on deepbed drying kinetics brings far more information to the identification procedure compared to those based on several measurements of thin-layer kinetics.…”

“…By providing data on both heat and mass transfers, an approach based on deepbed drying kinetics brings far more information to the identification procedure compared to those based on several measurements of thin-layer kinetics. With this in mind, the two other developed strategies were derived from the classical one, but with a major difference: effective moisture diffusivity was identified using deep-bed drying kinetics as opposed to thin-layer kinetics Lambert et al (2015b). In the first approach, the identification set contained drying kinetics from a single deep-bed setup, obtained at a high temperature (90°C).…”