Studies on the Characteristics of Moisture Transfer in Cereal Grain (Part 2)

An Investigation of Intermittent Drying Process with Two-Tanks Model

Abstract

The intermittent drying method adopted widely in grain drying has been introduced to prevent deterioration of grain quality.
However, the intermittent drying method was related not only to grain quality but also to drying characteristics and tempering effect, which resulted in increase of drying rate after tempering period.
This effect was not explained theoretically untill moisture distribution within grain could be calculated with the Sphere Drying Model.
With “Two-Tanks Model” in which husk played important role in moisture transfer in contrast to the Sphere Drying Model which neglected the presence of husk, the intermittent drying process was studied and tempering effect was explained in this investigation.
Especially, the authors studied the suitability of “Two-Tanks Model” to exprimental data and obtained the knowledge of moisture transfer during tempering period.