TY - JOUR
TI - Modeling of drying rate of non-hygroscopic products: Application to the pozzolana drying
AU - Randriamilantoniaina Yves Odon
AU - Andrianantenaina Marcelin Hajamalala
AU - Ramamonjisoa Bertin Olivier
AU - Randriamanantany Zely Arivelo
AU - Zeghmati Belkacem
JN - Thermal Science
PY - 2018
VL - 22
IS - 2
SP - 1037
EP - 1048
PT - Article
AB - Polynomial model adopted for the moisture content influence to the drying  rate of non hygroscopic products like the pozzolana presented some limits.  This model was not universal and has diverged whether moisture content  different to the appropriate experiment values has been used. Thus, a new  exponential model based on the inverse of moisture content and respecting to  the imposed boundaries conditions has been proposed. Model parameters were  determined using the least square approximation method of Newton-Marquart.  The predicted temporal variations of moisture content were provided from the  Runge-Kutta fourth order integration scheme computed on the new model of  drying rate. Moreover, two-way ANOVA method was performed on data analysis,  at the parameters statistical significance and in residual analysis for the  model fit quality. Model validations were done by comparisons among  theoretical and experimental values and between predicted and polynomial  models. Comparisons showed a good agreement with highest R2 and lowest  reduced chi-square, MBE, RMSE and MAPE.