摘要
以多孔介质传热传质、计算流体动力学理论为基础,采用数值模拟方法,保持其他参数不变,改变送风的湿度,探究就仓通风时,送风相对湿度分别为55%、60%、65%的条件下,0.3 m、2.1 m、3.7 m和5.5 m这四个粮层的温度和水分含量随时间的变化情况,得出送风湿度对粮堆各层温度和水分含量的影响,研究结果可以为储粮通风操作提供参考。
During grain storage, drying or cooling is done by forcing air through the grains to remove high mois- ture and temperature gradients within the bulk grain. In present paper, based on the theory of heat transfer, mass transfer and computational fluid dynamics of porous media, keeping the other parameters unchanged and only changing the humidity of the supplying air, the numerical simulation method was used to study the temperature and moisture content effects at 0.3 m, 2.1 m, 3.7 m and 5.5 m grain layers under the relative humidity conditions of 55%, 60% and 65% supplying air. The research has obtained the influence of different supplying air humidity on temperature and moisture content of different grain layers, and the results can provide a reference for the ventilation operation of grain storage.
出处
《粮食储藏》
2017年第5期5-10,共6页
Grain Storage
基金
国家重点专项(2016YFD0400100
2016YFD0401002)
国家粮食公益专项(201513001)
国家自然基金项目资助(51276102)
关键词
就仓通风
送风湿度
不同粮层
温度
水分
aeration, air relative humidity, grain layers, temperature, moisture content
