Available Online: http://www.ejpau.media.pl/volume15/issue3/abs-01.html
A NEW APPROACH FOR MODELING OF HOT AIR-MICROWAVE THIN LAYER DRYING OF SOYBEAN
Mohsen Ranjbaran1, Dariush Zare2
1 Agricultural Engineering Department Shiraz University
2 Biosystems Engineering Department, Faculty of Agriculture, Shiraz University, Iran
The drying characteristics of soybean during combined hot air-microwave drying were examined. The experiments were carried out for combination of five microwave power densities (0.89, 1.6, 3.2, 4.3, 5.3 W/g) and four levels of air temperatures (30, 40, 50 and 60 °C). Among several models which were fitted to the experimental data, the Modified Two Term model was introduced to be the most appropriate model to predict moisture ratio as a function of air temperature and microwave power density. The effective moisture diffusivity was calculated in the range from 8.740×10-10 m2/s to 3.9664×10-9 m2/s.
Key words: hot air-microwave drying, effective moisture diffusivity, thin layer drying, soybeans.
Agricultural Engineering Department
Biosystems Engineering Department, Faculty of Agriculture, Shiraz University, Iran
P.O. Box 7144165186, Shiraz, Iran
Phone: +98 711 6138192; Fax: +98 711 2286104
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.