Weibull Distribution for Modeling Med- and Short- Wave Infrared Radiation Drying of Kiwifruit Slices
Article
Figures
Metrics
Preview PDF
Reference
Related
Cited by
Materials
Abstract:
In this study, the kiwifruit was selected as raw material to investigate the effect of drying conditions on the parameters of Weibull distribution. The experiment was conducted at different levels of med-and short-wave infrared radiation drying temperature (50, 60, 70, 80 ℃) and infrared power (675, 1350, 2025 W). The result showed that the Weibull distribution function was good in simulating the process of med-and short-wave infrared radiation drying of kiwifruit slices. The scale parameter (α) was found to be related with the drying temperature and infrared power, and was decreased with increasing drying temperature and infrared power. However, the drying conditions had little influence on the shape parameter (β). The estimated moisture effective diffusivity (Dcal) of kiwifruit samples were calculated to be in the range from 1.061×10-7 to 3.51×10-7 m2/s, which increased with increasing drying temperature within the ranges tested. The activation energy determined from Arrhenius equation was 32.55, 27.02 and 28.07 kJ/mol at 675 W, 1350 W and 2025 W, respectively.
