Distribution of Vapor Pressure in the Vacuum Freeze-Drying Equipment

Joint Authors

Zhang, Shiwei
Liu, Jun

Source

Mathematical Problems in Engineering

Issue

Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.

Publisher

Hindawi Publishing Corporation

Publication Date

2012-07-24

Country of Publication

Egypt

No. of Pages

10

Main Subjects

Civil Engineering

Abstract EN

In the big vacuum freeze-drying equipment, the drying rate of materials is uneven at different positions.

This phenomenon can be explained by the uneven distribution of vapor pressure in chamber during the freeze-drying process.

In this paper, a mathematical model is developed to describe the vapor flow in the passageways either between material plates and in the channel between plate groups.

The distribution of vapor pressure along flow passageway is given.

Two characteristic factors of passageways are defined to express the effects of structural and process parameters on vapor pressure distribution.

The affecting factors and their actions are quantitatively discussed in detail.

Two examples are calculated and analyzed.

The analysis method and the conclusions are useful to estimate the difference of material drying rate at different parts in equipment and to direct the choice of structural and process parameters.

American Psychological Association (APA)

Zhang, Shiwei& Liu, Jun. 2012. Distribution of Vapor Pressure in the Vacuum Freeze-Drying Equipment. Mathematical Problems in Engineering،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-1029839

Modern Language Association (MLA)

Zhang, Shiwei& Liu, Jun. Distribution of Vapor Pressure in the Vacuum Freeze-Drying Equipment. Mathematical Problems in Engineering No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-1029839

American Medical Association (AMA)

Zhang, Shiwei& Liu, Jun. Distribution of Vapor Pressure in the Vacuum Freeze-Drying Equipment. Mathematical Problems in Engineering. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-1029839

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references

Record ID

BIM-1029839