Volume 8
Issue 2
Agricultural Engineering
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Available Online: http://www.ejpau.media.pl/volume8/issue2/abs-30.html
EFFECTIVE WATER DIFFUSION COEFFICIENT IN FABA BEAN SEEDS DURING DRYING.PART II. ANALYSIS OF ESTIMATION ERRORS
Ryszard Myhan, Ireneusz Bia這brzewski, Romuald Cydzik
Department of Agricultural Process Engineering,
University of Warmia and Mazury in Olsztyn, Poland
ABSTRACT
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.
Key words: faba bean, drying, effective water diffusion coefficient, estimation errors.
Ryszard Myhan
Department of Agricultural Process Engineering,
University of Warmia and Mazury in Olsztyn, Poland
14 Heweliusza Street, 10-718 Olsztyn, Poland
email: ryszard.myhan@uwm.edu.pl
Ireneusz Bia這brzewski
Department of Agricultural Process Engineering,
University of Warmia and Mazury in Olsztyn, Poland
14 Heweliusza Street, 10-718 Olsztyn, Poland
email: irekb@uwm.edu.pl
Romuald Cydzik
Department of Agricultural Process Engineering,
University of Warmia and Mazury in Olsztyn, Poland
14 Heweliusza Street, 10-718 Olsztyn, Poland
Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.