中文摘要：

为了探究百合的真空远红外辐射干燥的干燥特性,研究红外辐射板温度、干燥室压力和物料厚度三因素对百合真空远红外辐射干燥品质的影响。结果表明：提高辐射板温度、减小干燥室压力和物料厚度,均能明显缩短干燥时间,提高干燥速率;Weibull分布函数能够很好地模拟百合的真空远红外干燥过程（R2=0.995 3~0.999 7）;尺度参数α与辐射板温度极显著相关（P〈0.01）,并随辐射板温度的升高而降低;形状参数β与干燥室压力及物料厚度有关;百合在干燥过程中的水分扩散系数Dcal在0.401 3×10-9~1.307 5×10-9 m2/s,干燥的活化能Ea为55.130 3kJ/mol,小于热风干燥的活化能86.911 2kJ/mol;降低干燥室压力有利于总酚含量的保持。辐射板温度140℃、干燥室压力12kPa时百合干制品色泽良好。研究结果可为百合真空远红外辐射干燥加工提供理论依据。

英文摘要：

To research the influence factors of each parameter in the Weibull distribution function, with lily at different infrared radiation heater＇s temperature, different pressure of drying chamber and dif ferent thickness of materials being taken as subjects, Weibull distri- bution function was used to simulate and analyze the dynamic curve of lily. The results showed that Weibull distribution function could simulate the vacuum far infrared drying process well （R^2=0.995 3-- 0.999 7 ） ; the size parameter a of the model was significantly corre- lated with the infrared radiation heater＇s temperature （P〈 0.01 ）. The scale parameter β of the model was related to the pressure of the drying chamber and the materials＇ thickness, while temperature did not have significant influence on it; the diffusion coefficient of tools-ture during drying process ranges was between 0. 401 3 × 10^-9 1.307 5× 10^-9 me/s and the activation energy of lily during vacuum far-infrared drying process was calculated, equal to S5.130 3 kJ/mol, less than the hot air drying 86.911 2 kJ/mol. Reducing the pressure of the drying chamber does good to keeping the content of the total phenol; both the infrared lily can keep good color in radiation heater＇s temperature of 140℃ and the pressure of the drying chamber of 12 kPa.