EJPAU 2005. Myhan R. , Białobrzewski I. , Cydzik R. EFFECTIVE WATER DIFFUSION COEFFICIENT IN FABA BEAN SEEDS DURING DRYING.PART II. ANALYSIS OF ESTIMATION ERRORS

Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

2005
Volume 8
Issue 2/volume8

Topic:

Agricultural Engineering

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Myhan R. , Białobrzewski I. , Cydzik R. 2005. EFFECTIVE WATER DIFFUSION COEFFICIENT IN FABA BEAN SEEDS DURING DRYING.PART II. ANALYSIS OF ESTIMATION ERRORS, EJPAU 8(2/volume8), #30.
Available Online: http://www.ejpau.media.pl/volume8/issue2/volume8/abs-30.html

EFFECTIVE WATER DIFFUSION COEFFICIENT IN FABA BEAN SEEDS DURING DRYING.PART II. ANALYSIS OF ESTIMATION ERRORS

Ryszard Myhan, Ireneusz Białobrzewski, 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 kg_water/kg_dbwere 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 ≈ Θ_k). 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 Białobrzewski
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

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