Premium
Heat and mass transfer in hygroscopic capillary extruded products
Author(s) -
Fortes Mauri,
Okos Martin R.
Publication year - 1981
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690270212
Subject(s) - mass transfer , capillary action , thermodynamics , work (physics) , thermal conductivity , heat transfer , porous medium , chemistry , moisture , water content , materials science , porosity , chromatography , organic chemistry , physics , geotechnical engineering , engineering
This work presents an analysis of heat and mass transfer of extruded corn meal. Isotherm, thermal conductivity, drying and center temperature data were experimentally obtained for the cylindrically extruded product. Modeling of the drying process was made by incorporating the mechanistic and irreversible thermodynamics approaches for determining heat and mass transfer in capillary‐porous media. The proposed model shows that both liquid and vapor fluxes can be expressed in terms of the same driving‐forces, namely, temperature and equilibrium moisture content gradients. A search technique allowed for the evaluation of both liquid and vapor conductivities.