深床干燥工艺参数对稻谷干燥比能耗的影响  

Influence of Drying Parameters on Efficiency Rate of Rice in a Deep Fixed-bed

作　　者：王丹阳[1] 李成华[2] 佟玲[1] 杨玉芬[1] 张本华[1] 

机构地区：[1]沈阳农业大学工程学院,沈阳110161 [2]沈阳理工大学,沈阳110168

出　　处：《沈阳农业大学学报》2008年第5期593-597,共5页Journal of Shenyang Agricultural University

基　　金：辽宁省自然科学基金项目(20052121)

摘　　要：利用深床干燥试验台优化稻谷深床干燥工艺参数,定义耗能新指标干燥比能耗,采用二次回归正交旋转组合设计试验,建立热风温度、表现风速和谷层厚度与干燥比能耗之间的数学模型,分析各因素的单效应与互作效应,确定干燥比能耗最优条件下工艺参数的优化组合为:风温40℃,表现风速0.45m·s-1,谷层厚度50cm;利用频数分析法进行优化,得到具有高概率保证的干燥比能耗低于1000kJ·(kg·h)-1的参数范围,即干燥热风温度为43～50℃,表现风速为0.49～0.57m·s-1,谷层厚度为35～44cm,为干燥节能和干燥设备的参数设计提供参考。Rice drying experiments were conducted in order to optimize the efficiency rate. A deep drying test bed was used in the experiments. In the study the effects of drying air temperature, drying air velocity and paddy thickness on the efficiency rate were investigated. The results were analyzed with orthogonal rotary regression method to establish the relationship between performance function and each parameter. Single factors and correlative effects on performance were also discussed based on the regression model, the optimum process parameters for efficiency rate were obtained as air temperature 40℃, drying air velocity 0.45 ms^-1 and paddy thickness 50cm. An optimum range under 95% probability of efficiency rate less than 1000kJ·（kg·h）^-1 could be summarized for drying air temperature 43-50cC, drying air velocity 0.49～0.57m·s^-1 and paddy thickness 35-44cm, respectively by frequency analytical method. The study proviced useful formation for saving energy, the operation and adjustment of existing drying equipment.

关 键 词：稻谷 深床干燥 比能耗 干燥参数 试验研究 

分 类 号：S511[农业科学—作物学] S226.6