are used to freeze particulate foods of
uniform size and shape such as peas, cut corn, diced carrots,
and strawberries. The foods are placed on a mesh conveyor belt
and moved through a freezing zone in which cold air is directed
upward through the mesh belt and the food particulates begin
to tumble and float. This tumbling exposes all sides of the food
to the cold air, thus the product is individually quick frozen
(IQF). Typically, heat transfer coefficients range from 110 to
160 W/m2K (Fig. 3).