现代食品科技2018，Vol.34Issue(1)：141-147,7.DOI:10.13982/j.mfst.1673-9078.2018.1.022
基于Weibull分布函数的枸杞微波干燥过程模拟及应用
Application and Modeling Microwave Drying of Chinese Wolfberry Based on Weibull Distribution
摘要
Abstract
In order to explore the factors of the parameters in the Weibull distribution function and its application in Chinese wolfberry microwave hot air drying,he drying processes of Chinese woltberry in different pulse ratios (pulse ratio of 1.5∶2 min/1 min;pulse ratio of 1.67∶3min/2 min;pulse ratio of 2∶1 min/1 min),microwave power (185,200,215 W) and moisture content of Chinese wolfberry (30％,40％,50％)were selected as the study objects The drying kinetics curves were simulated based on the Weibull distribution function,and the effective diffusion coefficient and dry activation energy during the microwave drying of wolfberry were analyzed by the established Weibull model.The results showed that the Weibull distribution function could simulate the microwave drying process of wolfberry well.The scale parameter alpha was related to microwave pulse ratio,microwave power and moisture content,and it decreased with the increase of microwave power,while increased with the increase of microwave pulse ratio and moisture content.The initial water content,pulse ratio and microwave power had less influence on shaping parameter beta.According to the water content analysis of Weibull,the water effective diffusion coefficient of Chinese wolfberry was 1.7 × 105～3.2 × 10-5 m2/h and the dry activation energy of Chinese wolfoerry was 54.78 k J/mol..关键词
Weibull分布函数/微波干燥/有效扩散系数/干燥活化能Key words
Weibull distribution function/microwave drying/effective diffusion coefficient/dry activation energy引用本文复制引用
王鹤,慕松,吴俊,谢亚星,陈星名,刘帅帅..基于Weibull分布函数的枸杞微波干燥过程模拟及应用[J].现代食品科技,2018,34(1):141-147,7.基金项目
宁夏回族自治区科技支撑计划项目(NXK-2015122503) （NXK-2015122503）
