Drying is necessary for the storage of food and agricultural products such as rice and for the extension of their shelf life. Thus, it is an important post-processing step that consumes a considerable amount of energy.
Grain dryers include fixed bed dryers, fluidized bed dryers, moving bed dryers, etc. In an attempt to get a large amount of grain with the required moisture in a given time, a packed moving bed dryer was developed. The advantages of a packed moving bed dryer are the use of a lower-temperature air source and the realization of waste heat recovery. Therefore, it is very convenient to use a packed moving bed dryer to dry large amounts of cereals to the desired moisture content in a limited time. Furthermore, it is an important task to reasonably manipulate the drying process of grain in the packed moving bed dryer of high capacity.
Jon Chol Jin, a section head at the Faculty of Heat Engineering, has proposed a numerical approach for grain drying process in a packed moving grain dryer to study the steady process of the moisture content of grains based on a newly proposed steady state equation.
He has validated the accuracy of the proposed method through a comparison with precedent experimental results for moisture content and temperature of grains dried in a fixed bed dryer.
You can find the details in his paper “Steady state analysis for heat and mass transfer of grain dried in a packed moving bed dryer” in “International Journal of Food Engineering” (SCI).
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