The best model describing the thin layer drying of agriculture product during fluidized bed drying was chosen as the one with the lowest 2, minimum values of RMSE and the highest R2. The parameters of empirical mathematical model (k, n, a and b) and statistical analysis results applied to these models by taking into consideration with all air temperature are given in Table 2. In all cases of this study, the value of R2 was greater than 0.99, indicating satisfactorily a good fitting. For all experiments, the R2, 2, and RMSE values of the models altered in the extent of 0.9958-9993, 0.18x10-4 - 1.34x10-4, and 0.0128-0.0251 respectively. The results indicated that among these five models, the proposed Page model was the most appropriate model for prediction because it provided the highest R2, while , and RMSE the were lowest. According to these results, the Page was the most suitable model in describing the fluidized bed drying behavior of coconut residue. Earlier studies by some researchers confirmed that the Page was also suitable for describing drying curve in many agricultural materials.
Similar results for the order of reaction were found by other researchers as well.