Ventilation Drying of a Packed Wheat Bed. Modified Heat and Mass Transfer Models Considering Shrinkage During Drying.

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  • KOIDE Shoji
    The Japanese Society of Agricultural Machinery Faculty of Agriculture, Iwate University
  • NISHIYAMA Yoshio
    The Japanese Society of Agricultural Machinery Faculty of Agriculture, Iwate University
  • MURATA Satoshi
    The Japanese Society of Agricultural Machinery Iseki Noki Co. Ltd.
  • SUGAWARA Yuji
    Iseki Noki Co. Ltd.

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Other Title
  • 小麦充てん層の通風乾燥に関する研究
  • Ventilation Drying of Packed Wheat Bed
  • Modified Heat and Mass Transfer Models Considering Shrinkage During Drying

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Abstract

During drying of a packed wheat bed, decrease in the bed height caused by moisture reduction is significant. However, this phenomena has not been formulated mathematically before. In this paper, a new mathematical model of heat and mass transfer equations including bed shrinkage due to moisture reduction during drying was developed. In this regard, experiments were conducted on moisture content, temperature, bed height and static pressure in a packed wheat bed. Calculated and measured values fitted closely after introduction of bed shrinkage during drying. Thus the new model which considered shrinkage in the packed wheat bed during drying was found to be suitable to predict the moisture content, temperature and bed height.

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