| 粮食吸湿及湿空气在粮堆中的扩散特性研究 |
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| 引用本文： | 黄淑霞,田海娟,蔡静平. 粮食吸湿及湿空气在粮堆中的扩散特性研究[J]. 河南工业大学学报(自然科学版), 2010, 31(2) |
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| 作者姓名： | 黄淑霞 田海娟 蔡静平 |
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| 作者单位： | 1. 河南工业大学,设计艺术学院,河南,郑州,450001
2. 吉林工商学院,食品工程分院,吉林,长春,130000 |
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| 摘 要： | 研究了粮食的吸湿特性和湿空气在粮堆中的扩散特性.结果表明:粮食在湿空气中吸湿速度较快,安全水分小麦直接暴露于RH80%条件下,4 d左右水分即可达到基本平衡.但如果没有外部力量推动,湿空气在粮堆中扩散速度很慢,维持小麦、玉米和稻谷的初始相对湿度与环境相对湿度差值超过10%的条件,30 d、0.5 m粮层的相对湿度升高值均小于4%.温差对湿空气在粮堆中的扩散有较强的推动作用,在温差20℃和RH85%的条件下,对局部粮食的增湿速度,湿空气影响粮堆的深度和粮食的增湿量均显著大于无温差条件的结果.
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| 关 键 词： | 粮食储藏 相对湿度 粮食吸湿 |
STUDY ON MOISTURE ABSORPTION CHARACTERISTICS OF GRAIN AND MOISTURE DIFFUSION CHARACTERISTICS IN GRAIN BULK |
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| HUANG Shu-xia,TIAN Hai-juan,CAI Jing-ping. STUDY ON MOISTURE ABSORPTION CHARACTERISTICS OF GRAIN AND MOISTURE DIFFUSION CHARACTERISTICS IN GRAIN BULK[J]. Journal of Henan University of Technology Natural Science Edition, 2010, 31(2) |
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| Authors: | HUANG Shu-xia TIAN Hai-juan CAI Jing-ping |
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| Affiliation: | HUANG Shu-xia1,TIAN Hai-juan2,CAI Jing-ping3(1.School of Engineering Art,Henan University of Technology,Zhengzhou 450001,China,2.Branch of Food Engineering,Jilin Business , Technology College,Changchun 130000,3.School of Bioengineering,China) |
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| Abstract: | The moisture absorption characteristics of grain and the moisture diffusion characteristics in grain bulk were investigated.The results indicate that the grain in moisture air has high moisture absorption speed,and wheat with safe moisture content can achieve basic moisture balance in about 4 days when directly exposed to environment with RH 80%.However,the moisture diffused in the grain bulk slowly if no external force was applied.Under the condition of keeping the difference between the initial relative h... |
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| Keywords: | grain storage relative humidity grain moisture absorption |
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