ENERGY EFFICIENCY INVESTIGATION OF INTERMITTENT PADDY RICE DRYER:MODELING AND EXPERIMENTAL STUDY

摘要：

　　In this study,energy consumption of intermittent drying of paddy rice is evaluated.Firstly,a mathematical model including two separated parts is established to describe the moisture distribution within the grain for both the drying and tempering stages.The model,which was solved analytically,is proposed based on Ficks second law of diffusion within a single sphere.Then,the model parameter,herein moisture diffusivity,was estimated in Arrhenius form using experimental data obtained from a lab-scale fluidized bed dryer.Finally,the model was utilized in an optimization problem to minimize the total energy consumption.The optimization results showed that employing the tempering stages substantially reduces the energy consumption.Moreover,the first stage of drying was found to be the longest stage with a moderate temperature while the subsequent stages are shorter with higher temperatures.

关键词： mathematical modeling intermittent drying paddy rice energy consumption optimization

作者: M.Golmohammadi M.Rajabi-Hamane M.Assar S.J.Hashemi

作者单位: School of Chemical Engineering,College of Engineering,University of Tehran Enghelab Ave.,Tehran,P.O.B.11155-4563,Iran

会议类型: 国际会议

会议名称: The 18th International Drying Symposium Conference(第十八届国际干燥学术大会(IDS2012))

会议地点: 厦门

会议语种:英文

页码: 1-8

在线出版日期: 2012-01-11（万方平台首次上网日期，不代表论文的发表时间）