摘要
在相对湿度为70%,气流温度稳定在22℃左右,风速为0 m/s、0.028 1 m/s、0.037 5 m/s、0.046 8 m/s的条件下,研究小麦平衡水分的变化规律.结果表明,气流相对静止的条件下,小麦所达到的平衡水分要高于一定气流速度下的平衡水分,且在一定气流速度下达到吸湿平衡的时间比静态气流下明显延长;通过小麦的空气流速越大,水分增加幅度越大,平衡水分值越高,达到平衡的时间越短;根据Page方程获得了一定条件下小麦含水率和实验时间的回归方程,二者具有很高的相关性.
The change rules of wheat equilibrium moisture content was studied under the conditions that the relative humidity is 70% , the airflow temperature is about 22 ℃ , the speed of ventilating is 0 m/s, 0. 028 1 m/s, 0. 037 5 m/s, 0. 046 8 m/s respectively. The results showed that the wheat equilibrium moisture content under static air current is higher than that under some airflow velocity, and the time when the wheat reaches moisture absorption balance under some airflow velocity is longer than that under static air current. The time of reaching equilibrium will be shortened with the increasing of the speed of ventilating, the moisture gradient and the equilibrium moisture content. The equations of the wheat moisture content and time was established based on the Page model, which have high correlativity.
出处
《河南工业大学学报（自然科学版）》
CAS
北大核心
2007年第5期1-4,共4页
Journal of Henan University of Technology：Natural Science Edition
关键词
小麦
气流速度
平衡水分
wheat
airflow velocity
equilibrium moisture content
