5HCCX-1.6型多单元带式干燥机干燥过程的计算机模拟  

Simulation of drying process for 5HCCX-1.6 multi-zone belt dryer

作　　者：陈龙健[1] 刘德旺[1] 吕黄珍[1] 

机构地区：[1]中国农业大学工学院,北京100083

出　　处：《农业工程学报》2006年第2期122-126,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家"十五"科技攻关项目"2001BA504B04"

摘　　要：多单元带式干燥机干燥过程的计算机模拟研究,有利于优化其干燥工艺参数,提高干燥效率,减少能耗,保证物料的干燥品质。该文利用面向对象的高级程序语言V isua l C++建立了玉米多单元带式干燥的深床干燥数学模拟程序,并编制人机交互界面,预测干燥设备内的物料和干燥介质状态参数。同时用M atlab软件对数据进行处理,分析了热风温度、相对湿度以及风速等干燥工艺参数对干燥过程的影响,结果表明热风温度对干燥速率影响最大,其次是风速,热风相对湿度影响最小。为验证模型的准确性,选用5HCCX-1.6型多单元带式干燥设备进行试验研究,结果表明该模拟程序能较好的预测该类干燥设备的干燥过程,并对实际生产有一定的指导作用。Simulation of drying process for a multi-zone belt drying process can be useful for optimizing the drying parameters, improving the drying efficiency, saving the consumed energy and ensuring the drying quality. The multi-zone belt drying modeling of corn has been studied by considering the deep bed as a series of thin layers. A partial differential equation model has been developed to simulate heat and mass transfer in multi zone belt dryer. The computer program with human-machine cooperation interface can predict the changes of temperature and moisture of the corn, temperature and humidily of the drying air along the dryer. Furthermore, the effects of different drying parameters such as airflow rate, drying air temperature, air relative humidity on drying process were analyzed. It was found that the primary and secondary order of drying parameters affecting the drying rate is the drying air temperature, airflow rate and air relative humidity. As a process of validation of the modeling, the predicted and experimental results of 5HCCX-1.6 multi zone belt dryer were compared. It has been observed that the simulation results agreed quite well with experimental data.

关 键 词：多单元 带式干燥 模型 模拟 

分 类 号：S266.6[农业科学—农业水土工程]