Abstract
In this study, drying behaviours of the outer shell peeled Bittim (Pista- cia terebinthus) with initial moisture content of 42.2% (dry basis (d.b)) was investi- gated in a novel fixed bed drying system. The drying experiments were performed at different temperatures (40 ˚C, 60 ˚C and 80 o C), air velocities (0.5 m/s and 1 m/s) and weights (30 g and 40 g). A constant rate period was not observed in the drying of bittims; all the drying process occurred in falling rate period. Three mod- els in literature were selected to fit the experimental data. The fit quality of models was evaluated using the coefficient of determination (R 2 ), sum square error (SSE) and root mean square error (RMSE). Balbay and Sahin model has a good agree- ment with the experimental data and gave the best results for bittims in a fixed bed
Published Version
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