摘要
试验结果表明，在冻干过程中升华界面温度是逐渐上升的。本文用升华界面温度与其位置的线性表达式替换以往研究中界面温度的恒定值，改善了冻干中的质量传递模型，并用初乳做试验，得出单纯降低冷阱表面温度对减少冻干时间的作用较小；同时从水蒸气在多孔干燥层中的扩散性分析，得出冻干浓缩材料浓度约５０％为上限。
The mass transport model is established with a linear function between the sublination temperature and the interface positions.It has been found thar the effects of the lower condenser tenperature on the freeze drying time are insignificant,and the maximum concentration of liquid materials is not over 50%.
出处
《制冷学报》
CAS
CSCD
北大核心
1997年第3期23-27,共5页
Journal of Refrigeration
