| 冷冻干燥升华过程数学模型传热传质机理 |
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| 引用本文： | 郑宗和,张赫.冷冻干燥升华过程数学模型传热传质机理[J].天津大学学报(自然科学与工程技术版),1997,30(4):480-484. |
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| 作者姓名： | 郑宗和 张赫 |
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| 作者单位： | 热能工程系 |
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| 摘 要： | 提出冷冻干燥升华过程主要由传热控制和传质过程两阶段组成，分析认为升华过程是传热传质的逆过程，并得出该过程的合理工艺条件，即物料表面的加热温度和干燥箱内真空度的变化规律。
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| 关 键 词： | 冷冻干燥 升华过程 传热 传质 干燥 数学模型 |
A MATHEMATICS MODEL AND ITS HEAT AND MASS TRANSFER ANALYSIS OF THE FREEZE DRYING SUBLIMATION PROCESS |
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| Zheng Zonghe,Zhang He,Zhang Jingqin.A MATHEMATICS MODEL AND ITS HEAT AND MASS TRANSFER ANALYSIS OF THE FREEZE DRYING SUBLIMATION PROCESS[J].Journal of Tianjin University(Science and Technology),1997,30(4):480-484. |
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| Authors: | Zheng Zonghe Zhang He Zhang Jingqin |
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| Institution: | Dept. of Thermal Energy Eng. |
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| Abstract: | This paper proposed that there are two stages in sublimation process: the heat transfer controlled stage and the mass transfer controlled stage. We consider the sublimation as an inverse procedure of coupled heat and mass transfer process. In this way the typical pattern of porous medium surface temperature and that of drying chamber pressure can be obtained easily. |
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| Keywords: | freeze drying sublimation process porous medium heat transfer control mass transfer control |
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