Effects of the sample’s porous structure on the process of vacuum freeze drying
In the typical operation conditions of vacuum freeze drying, the relationship between the diffusion mass transfer and the samples porous structure is analyzed. The heat and mass transfer models of the freeze drying are setup, and numerically solved by the finite volume method with fixed grids. The results show that the drying processes are significantly influenced by structural parameters, the diameter and tortuosity of samples pores, so structure analysis is necessary for the process optimization of the freeze drying. Moreover, it may provide an effective way to improve the drying efficiency through the investigation of the pre-cooling stage of the freeze drying.
Haifeng Zhang Liqun He Jiaming Zhang
Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei, 230027, China
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）