DIFFUSION COEFFICIENTS FOR PREDICTING ROUGH RICE RE-WETTING BEHAVIOR
作者:
M. A. Basunia,
T. Abe,
期刊:
Drying Technology
(Taylor Available online 2000)
卷期:
Volume 18,
issue 4-5
页码: 1099-1107
ISSN:0737-3937
年代: 2000
DOI:10.1080/07373930008917757
出版商: Taylor & Francis Group
关键词: Thin-layer;moisture transfer;oven;temperature;relative humidity
数据来源: Taylor
摘要:
Thin-layer re-wetting experiments were conducted with medium grain rough rice in the temperature range of 17.8 to 45°C and for relative humidities between 56 and 89.3%, with initial moisture contents in the range of 10.26 to 12.71% dry-basis to determine the diffusion coefficient of rough rice. Recent efforts to characterize the re-wetting characteristics of rough rice are summarized. New equation for temperature dependent liquid diffusion coefficients for medium grain rough rice are presented. The diffusion coefficient in re-wetting was lower than the drying. The results presented here, over typically five day re-wetting, will be useful in studying the longer term moisture transfer process occurring during ventilated storage.
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