The data in Table 3 show that the adjusted R2 for forced
convection runs for all models were higher than 0.97 except
that for Wang and Singh model. Also Verma et al. model
was the best model for thin layer solar drying of mint for both
plastic covers. Thus, all the tested models except Wang and
Singh may be assumed to represent solar drying behavior of
mint in thin layer beds to an acceptable degree of accuracy.