关键词: freeze-drying;model;heat and mass transfer

Abstract: Based on the experiments on freeze-drying carrot and potato slabs, the effects of some
parameters, such as heating temperature and pressure on the freeze-drying process are
examined. A simple model of freeze-drying is established to predict drying time and the
mass variations of materials during the drying. The experimental results agree well with
those calculated by the model.

Key words: freeze-drying, model, heat and mass transfer