Unlike tortillachips (Li et al., 1999), potato chips dry faster at higher
air flow rates for the same steam temperature. At a
steam conditions of T 145 and h 160 W/m2 K, it
took about 14 min for the chips to reach equilibrium
moisture content in comparison to 22 min when the
chips where dried at T 145ฐC and h 100 W/m2 K.
In conclusion, impingement drying is a old technology that has only recently been applied to such processing as bakery, snacks, etc. The use of superheated
steam as a drying medium has the potential to reduce
nutrient losses in processed foods.