【摘要】 通过对胡萝卜和土豆的冷冻干燥实验研究，探讨了加热方式、热源温度、系统真空度等过程参数对冷冻干燥过程的影响。在合理简化的基础上，导出了所需参数较少的数学模型，且模拟值与实验值吻合良好。更多还原

【Abstract】 With the experimental study of freeze drying carrot and potato chip, the effects of process parameters of the heat transfer patterns, the heating temperatures and the pressures on the freeze drying were discussed. A simplified mathematical model was established to predict the freeze drying time, the variations of temperature and the weight of material. The experimental results obtained agree well with those calculated by the mathematical model.更多还原