PROCESSES RELATED TO DRYING .1. THEORETICAL-MODEL

被引：35

作者：

MOYNE, C

PERRE, P

机构：

[1] LEMTA, URA CNRS 875, 54516, Vandoeuvre, Cedex

[2] ENGREF, 54042, Nancy, Cedex

来源：

DRYING TECHNOLOGY | 1991年 / 9卷 / 05期

关键词：

MOISTURE TRANSPORT; CAPILLARY POROUS MEDIA; MODELING;

D O I：

10.1080/07373939108916746

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The aim of this paper is to summarize ten years of work in order to model the drying of solids. Nowadays there is a general agreement amongst the various researchers worldwide. If the porous medium is viewed at the so-called "macroscopic" scale (that is to say when it is viewed as a continuous and homogeneous equivalent medium) a set of three partial derivative equations is derived, three state variables being necessary to thermodynamically describe the medium (temperature, moisture content and total pressure in the gaseous phase for example). After a short historical survey of the modeling of drying, we want to obtain this set of equations drawing the reader's attention to three particular points: the importance of the air mass balance, the right way to write the energy equation (and the associated boundary conditions) and the taking into account of the adsorbed water. A second part of this article [1] will be devoted to the numerical solution of this problem and will illustrate these points.

引用

页码：1135 / 1152

页数：18

共 31 条

[1]

Perre P., Moyne C., Processes related to drying. Part II : a same model to solve transfers both in saturated and unsaturated porous media, Drying Technology Journal, (1991)

[2]

Lewis W.K., The rate of drying of solid materials, Ind. Eng. Chem., 13, 5, pp. 427-432, (1921)

[3]

Sherwood T.K., The drying of solids, Ind. Eng. Chem., 21, 1, pp. 12-16, (1929)

[4]

Ceaglske N.H., Hougen O.A., Drying of granular solids, Ind. Eng. Chem., 29, 7, pp. 805-813, (1937)

[5]

Hougen O.A., Cauley H.J., Marshall W.R., Limitations of diffusion equations in drying, American Institute of Chemical Engineers, pp. 183-205, (1939)

[6]

Krischer O., Die wissenschaftlichen Grundlagen der Trocknungstechnik, (1962)

[7]

Krischer O., Rohnalter H., Warmeleitung und Dampfdiffusion in feuchten Gutern, Verein Deut. Ing.-Forschungsheft 402, (1940)

[8]

Philip J.R., De Vries D.A., Moisture movement in porous materials under temperature gradient, Trans. Amer. Geophys. Union, 38, pp. 222-232, (1957)

[9]

De Vries D.A., Simultaneous transfer of heat and moisture in porous media, Trans. Amer. Geophys. Union, 39, pp. 909-916, (1958)

[10]

De Vries D.A., The theory of heat and moisture transfer in porous media revisited, Int. J. Heat Mass Transfer, 30, 7, pp. 1343-1350, (1987)

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