Some Aspects of the Modelling of Thin-Layer Drying of Sawdust

Drying of spruce, beech, willow, and alder sawdust was examined in a laboratory type dryer. The effect drying air temperature T (25, 60, 80 °C) airflow velocity v (0.01, 0.15, 1.5 m/s) investigated. obtained results demonstrated that have impacts on the sawdust. experimental dehydration data were fitted to theoretical, semi-theoretical, empirical thin-layer models. accuracies models estimated using correlation coefficient (R), root mean square error (RMSE), reduced chi-square (χ2). All except theoretical model sphere described characteristics satisfactorily. parameters (constants coefficients) determined. effect, by proposed equations, also described. This work combines aspects mechanical engineering modelling process.