Effective water diffusion coefficient in faba bean seeds during drying. Part I. Determination of values

• Autorzy: Bialobrzewski I. , Myhan R. , Cydzik R.
• Języki publikacji: EN

Abstrakty

EN

The effective water diffusion coefficient was determined in faba bean seeds during drying. Faba bean seeds with an initial moisture content of 0.240 kg/kg were dried under natural convection conditions at 15, 20, 25, 30 and 35°C. The results obtained in the study show that in the process of convective drying of faba bean seeds the effective water diffusion coefficient is related to moisture content in a temperature range [15, 35]°C, and moisture content range. It was also found that the effective water diffusion coefficient is significantly affected by temperature in a range [15, 35]°C, but not in a range [20, 30]°C. The exponential form of the Arrhenius equation describes, with sufficient accuracy, the effective water diffusion coefficient in faba bean seeds during drying, as a function of material moisture content and temperature.

Słowa kluczowe

EN

drying; determination; temperature; moisture content; faba bean; mathematical model; effective water diffusion coefficient; seed

• Wydawca: -
• Czasopismo: Electronic Journal of Polish Agricultural Universities. Series Agricultural Engineering
• Rocznik: 2005
• Tom: 08
• Numer: 2
• Opis fizyczny: http://www.ejpau.media.pl/volume8/issue2/art-29.html

Twórcy

autor

Bialobrzewski I.

• University of Warmia and Mazury in Olsztyn, 14 Heweliusza Street, 10-718 Olsztyn, Poland

autor

Myhan R.

autor

Cydzik R.

Bibliografia

• Adu B., Otten L., 1996. Diffusion characteristics of white beans during microwave drying. J. Agrc. Engng. Res. 64, 61-70.
• Babalis S.J., Belessiotis V.G., 2004. Influence of the drying conditions on the drying constants and moisture diffusivity during the thin-layer drying of figs. Journal of Food Engineering 65, 449-458.
• Bennett C.O., Myers J.E., 1967. Momentum, heat, and mass transfer. WNT Warsaw [in Polish].
• Bird R.B., Stewart W.E., Nightfoot E.N., 2002. Transport phenomena. Second edition. Jonh Wiley & Sons, Inc.
• Chen X.D., Lin S.X.Q., Chen G., 2002. On the ratio of heat to mass transfer coefficient for water evaporation and its impact upon drying modeling. International Journal of Heat and Mass Transfer 45, 4369-4372.
• Dietl C., George G.P., Bansal N.K., 1995. Modelling of diffusion in capillary porous materials during the drying process. Drying Technology 13(1&2), 267-293.
• Dincer I., 1998. Moisture transfer analysis during drying of slab woods. Heat and mass transfer 34, 317-320.
• Hamdami N., Monteau J.-Y., Le Bail A., 2004. Transport properties of a high porosity model food at above and sub-freezing temperatures. Part 2: Evaluation of the effective moisture diffusivity from drying data. Journal of Food Engineering 62, 385-392.
• Hatamipour M.S., Mowla D., 2003. Correlation for shrinkage, density and diffusivity for drying of maize and Greek peas in a fluidized bed with energy carrier. Journal of Food Engineering 59, 221-227.
• Kneule F., 1970. Suszenie [Drying]. Arkady. Warsaw [in Polish].
• Myhan R., Cydzik R., Białobrzewski I., Markowski M., 2004. Drying curves - analysis of estimation error. Annual Review of Agricultural Engineering Vol. 3/1, 141-148.
• Neegarg P., 1977. Seed Pathology. Mc Millan Press.
• Pabis J., 1977. Podstawy teorii i technologii konwekcyjnego suszenia nasion i warzyw [Theoretical and technological basis of convective drying of seeds and vegatables]. Rozpr. hab., Warsaw [in Polish].
• Pabis S., 1982. Teoria konwekcyjnego suszenia produktów rolniczych [Theory of convectice drying of agricultural materials]. PWRiL, Warsaw [in Polish].
• Senadeera W., Bhandai B.R., Young G., Wijesinghe B., 2003. Influence of shapes of selected vegetable materials on drying kinetics during fluidized bed drying. Journal of Food Engineering 58, 277-283.
• Simal S., Mulet A., Terrazo J., Rossello C., 1996. Drying models for green peas. Food Chemistry 55(2), 121-128.
• Wanaanen K.M., Litchfield J.B., Okos M.R., 1993. Classification of drying models for porous solids. Drying Technology 11(1), 1-40.
• Wang Z.H., Chen G., 1998. Heat and Mass transfer during low intensity convection drying. Chemical Engineering Science 54, 3899-3908.
• Weres J., Olek W., Guzenda R., 2000. Identification of mathematical model coefficients in the analysis of the heat and mass transport in wood. Drying Technology 18(8), 1697-1708.