Effective water diffusion coefficient in faba bean seeds during drying. Part II. Analysis of estimation errors

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

Abstrakty

EN

The objective of this study was to determine the effects of measuring errors on the accuracy of diffusion coefficient estimation as dependent on the method used. The estimation was based on a numerical solution of the inverse function, and inverse problem solving. The analysis concerned results of convective drying of faba bean seeds. The seeds, with an initial moisture content M0=0.240 kgwater/kgdb were dried at 15, 20, 25, 30 and 35°C. The results obtained in the study show that the method based on inverse problem solving is more effective at extreme moisture levels (Θ ≈ 0 and Θ ≈ Θk). This method, used for simulating successive replications, enables to acquire information not only on estimated values of the diffusion coefficient and measuring errors, but also on their distribution.

Słowa kluczowe

EN

drying; faba bean; moisture level; estimation error; 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-30.html

Twórcy

autor

Myhan R.

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

autor

Bialobrzewski I.

autor

Cydzik R.

Bibliografia

• Białobrzewski I., Myhan R., Cydzik R., 2005. Effective water diffusion coefficient in faba bean seeds during drying. Part I. Determination of values. Electronic Journal of Polish Agricultural Universities. Vol. 8, Issue 2, http://www.ejpau.media.pl/volume8/issue2/art-29.html
• Jaros M., Cenkowski S., Jayas D.S., Pabis S., 1992. A method of determination of the diffusion coeeficient based on kernel moisture content and its temperature. Drying Technology 10(1), 213-222.
• 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.
• Pabis S., 1982. Teoria konwekcyjnego suszenia produktów rolniczych [Theory of convectice drying of agricultural materials]. PWRiL, Warsaw [in Polish].
• 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.