studied the thin layer characteristics of organic apples slices in a convective hot air dryer as a single layer with thickness of 5and9mm. Temperatures ranged from40 to 60 1C while a single air velocity of 0.8ms1 was utilized. They noticed that both moisture content and drying rate were
affected by the drying air temperature and slice thickness and they observed a decrease in the drying ime,with the increase
of the air drying temperature and an increase in the dryin grate, with the decrease of the slice thickness. Babalis et al.