CIESC Journal

• 化工学报 • 上一篇    下一篇

多孔纤维状物质的冷冻干燥模型

杨卓如,李志云,涂伟萍,程江,陈焕钦   

  1. 华南理工大学化工学院!广州510641,华南理工大学化工学院!广州510641,华南理工大学化工学院!广州510641,华南理工大学化工学院!广州510641,华南理工大学化工学院!广州510641
  • 出版日期:1996-04-25 发布日期:1996-04-25

MODEL FOR FREEZE DRYING OF FIBROUS-POROUS MATERIALS

Yank Zhuoru;Li Zhiyun;Tu Weiping;Cheng Jiang;Chen Huanqin(Chemical Engineering College,South China University of Technology,Guangzhou510641 )   

  • Online:1996-04-25 Published:1996-04-25

摘要: 通过对草菇进行冷冻干燥实验,研究了过程中样品的中心温度及水分率随时间的变化关系.对冻干过程中物料干燥层和冰冻层进行质量和热量衡算,建立了升华─吸附─解吸数学模型.实验值与模型计算值吻合良好.

Abstract: The relations of temperature and water fraction versus drying time during freeze drying of mushroom have been studied.The mathematical model of freeze drying of sublimation-adsorption-desorption was developed based on the energy and mass conservation in dried and frozen regions of mushroom respectively.Experimental values fit well with calculated results.

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