【摘要】 为探索平贝母在干燥过程中的内部水分变化规律,实现对其含水率的实时监测,为平贝母的干燥工艺和过程设计提供理论依据,利用干燥箱分别在45、55、65℃条件下获得平贝母的热风干燥特性曲线,并以R²、χ²和RMSE为评价指标,采用常用的4种经典干燥模型建立平贝母干燥动力学模型。试验结果表明:Weibull模型与其他干燥模型相比能够更好地模拟平贝母的热风干燥过程;尺度参数α随着干燥温度升高而减小,形状参数β变化不大;基于Weibull函数计算求得估算有水分有效扩散系数为1.229×10^-10～3.218×10^-10m²/s,干燥活化能为144.91kJ/（mol·K）。该项研究为使用现代干燥技术实现平贝母干燥工业化提供了技术依据,奠定了理论基础。更多还原

【Abstract】 For the purpose of exploring the change law of internal moisture in Fritillaria during drying, to realize the real-time monitoring of the moisture content, and provides a theoretical basis for the drying process design of Fritillaria. In the experimental part, the hot-air drying characteristic curve of Fritillaria was obtained in the dry-box at 45℃,55℃and65℃ firstly, with taking R²,χ²and RMSE as the evaluation index. Then, the drying kinetic model of Fritillaria was established by using four classical drying models. The experimental results show that the Weibull model can better simulate the hot air drying process of Fritillaria than other drying models. Among them, the scale parameter α decreases significantly with the increase of drying temperature, but the shape parameter β was not. The effective estimated diffusion coefficient is 1.229×10^-10～3.218×10^-10m²/s and drying activation energy of water is 43.296 kJ/（mol·k） based on Weibull function. To sum up, this study provides technical and theoretical basis for the industrial drying of Fritillaria by using modern drying technology.更多还原