Numerical simulation of lyophilization of carrot slices at atmospheric pressure in a fluidized bed

被引：2

作者：

Bubnovich, V. ^{[1
]}

Reyes, A. ^{[1
]}

Quijada, E. ^{[1
]}

Mahn, A. ^{[1
]}

机构：

[1] Univ Santiago Chile, Dept Ingn Quim, Santiago 9170019, Chile

来源：

JOURNAL OF FOOD ENGINEERING | 2012年 / 109卷 / 04期

关键词：

Lyophilization; Numerical simulation; Fluidized bed; MASS-TRANSFER PROCESS; DIELECTRIC CORES; POROUS-MEDIA;

D O I：

10.1016/j.jfoodeng.2011.11.030

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Two-dimensional numerical simulations were carried out to describe the lyophilization process at atmospheric pressure and its optimization. The finite differences method succeeded in describing correctly the complex motion of the sublimation interface in foodstuff. Comparison of unidirectional and bidirectional mass and energy transport showed considerable differences in the drying kinetics. These differences decreased as the geometric ratio (GR) decreased and the physical situation approached to that of an infinite plate. The temperature and vapor pressure distributions were analyzed as functions of ice saturation. Two-dimensional numerical simulations showed a good fit with the experimental data. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：659 / 667

页数：9

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