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| International Agrophysics |
| wydawca: | Instytut Agrofizyki
im. B. Dobrzańskiego
PAN
w Lublinie |
| ISSN: |
0236-8722 |
vol. 23, nr. 2 (2009)
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poprzedni artykuł wróć do listy artykułów następny artykuł
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Drying characteristics of walnut (Juglans regia L.) during convection drying
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| (pobierz wersję PDF )
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S.R. Hassan-Beygi, M. Aghbashlo, M.H. Kianmehr, J. Massah
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Department of Agricultural Technical Engineering, Faculty of Agricultural Engineering, Abureyhan University College, University of Tehran, P.O.Box 11365-4117-Tehran, Iran |
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vol. 23 (2009), nr. 2,
pp. 129-135
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streszczenie
Drying characteristics of walnut were determined experimentally as a function of temperature, air velocity and variety (Serr, Pedro, Z67, K82). Four different drying models were fitted to the experimental data to select a suitable mathematical form of the drying curve. Experiments were performed at air temperatures of 32 and 43°C and two air velocities of 1 and 3 m s-1 at each temperature. Of the drying models tested, the Page model was selected as the best mathematical model based on the values of R2, 2 and RMSE. Drying time and Page model constants were significantly dependent on the variables studied. Correlations of the Page model constant, k and m, the effective moisture diffusivity of walnuts and the drying time with the variables were determined. The effective moisture diffusivity of walnuts varied from 3.54×10-7 to 9.92×10-7 m2 s-1.
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słowa kluczowe
drying, walnut, modelling, Page model, effective moisture diffusivity
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