selection of a relevant mathematical model for drying of tomato slices using solar dryer

in this research, solar drying of a thin layer of tomato slices was evaluated. the experiments were carried out at the air velocities of 0.5 and 1.0 m s-1 and thicknesses of 3, 5 and 7 mm. in order to find the most suitable form of thin layer drying model, nine different mathematical drying models were fitted to the experimental data to determine the pertinent coefficients of each model. the goodness of the fit was determined by calculating and comparing the values of the correlation coefficient (r^2 ) root mean square error (rmse) and chi-square (χ^2) for all models. the page model with r^2=0.9974 ,χ^2=0.01351 , rmse=0.002 showed the best fit.