高湿粮食贮藏干燥机设计与试验  

Design and Experiment of Dryer for High Moisture Grain Storage

作　　者：李长友[1] 张烨[1] 麦智炜[1] 

机构地区：[1]华南农业大学南方农业机械与装备关键技术教育部重点实验室,广州510642

出　　处：《农业机械学报》2014年第4期231-235,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(31371871);高等学校博士学科点专项科研基金资助项目(20114404110021);广东省产学研资助项目(2012B091000135)

摘　　要：在对高湿粮食干燥状态参数和水分结合能变化特征理论分析的基础上,设计了一种高湿粮食贮藏干燥机,从理论和试验两方面证实了干燥系统客观能势的利用效果,图解了高湿粮食在贮藏干燥机内的温度及其含水率状态变化过程。试验结果显示,温度在30℃、相对湿度40%时,利用自然空气可将粮食的温度降至低于环境温度10℃、降水速率在0.76%/h以上。研究结果为粮食干燥工艺系统设计指明了高效节能的途径,为大型粮食集中干燥设施提供了高效节能的预干燥设备。In order to solve the problem of excessive energy consumption of high moisture grain drying,a high moisture grain dryer was designed,and the state parameters in high moisture grain drying and the change characteristics of moisture binding energy were analyzed.From the theoretical and experimental evidences,the utilization effects of drying potential energy and the changing process for the temperature and moisture of high moisture grain dryer were illustrated and observed.The experimental result showed that the temperature of grain could be reduced and was lower than environment temperature nearly 10℃ when temperature was 30℃,relative humidity was 40% and drying rate was more than 0.76%/h.The result also pointed out the design method of grain drying process for saving energy and provided energy efficiency of pre-drying equipment for large-scale grain drying companies.

关 键 词：高湿粮食 贮藏干燥 干燥机 设计 试验 

分 类 号：S226.6[农业科学—农业机械化工程]