Mathematical Model for Paddy Drying by Jet Spouted Bed Dryer
Keywords:
Jet spouted bed, Drying model, PaddyAbstract
This research was performed to determine the most appropriate a mathematical model for predicting the moisture ratio of paddy drying by a Jet Spouted bed dryer. The condition for operation were: the drying temperature 70, 80 and 90 °C, the initial moisture content about 30-35 % (d.b) and final moisture content 12 % (d.b). The results showed that, drying temperature showed the effect on the rate of drying, the drying rate increased with drying temperatures resulted in the increase of drying rate. The Midilli et al. model could represent the drying characteristics of paddy most satisfactorily. Effective moisture diffusivities were determined between 3.10 × 10-9and 3.456 × 10-9m2/s. The activation energy was found to be 69.00 kJ/mol.
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