کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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861752 | 1470795 | 2012 | 7 صفحه PDF | دانلود رایگان |
Drying is a main process of conservation used for agricultural products and it is so essential to control its drying parameters.Bio-material will shrink during the drying process.In this study, the characteristics of drying were investigated through slices shrinkage behaviour at 40, 50 and 60 °C Results showed that shinkage was anisotropic and best fitted by the linear model of volume. The apparent density was strongly effected by volume shrinkage, its value decreased from 1035 kg/m3 at the initial stage of the drying to about 885 kg/m3 at the end of the drying process.The porosity has a large value approaching 80% and most of the evaporated water during drying was replaced by gas. Drying rates were underestimated and diffusivities overesimated when drying data are not corrected for shrinkage.
Journal: Procedia Engineering - Volume 31, 2012, Pages 634-640