Theoretical study of heat and mass transfer in a zeolite bed during water desorption: validity of local thermal equilibrium assumption

被引：48

作者：

Mhimid, A ^{[1
]}

机构：

[1] Ecole Natl Ingn Monastir, Dept Gen Energet, Monastir 5000, Tunisia

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 1998年 / 41卷 / 19期

关键词：

zeolite; desorption; kinetic; moisture content; bidimensional; numerical resolution; finite volume;

D O I：

10.1016/S0017-9310(98)00010-6

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

We have studied heat and mass transfer in a zeolite bed during water desorption. For this purpose, a mathematical model based on scale changing has been established. We have tested the local thermal equilibrium assumption in a two-dimensional flow. The problem is numerically resolved using a finite volume method. The numerical simulation gives the time and space evolution of temperature and moisture content. The influence of different effects (essentially the effective conductivity of the solid and the reactor geometry) on the total mass desorbed are examined. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：2967 / 2977

页数：11

共 29 条

[1]

ABDALLAH K, 1989, THESIS EN SAM PARIS

[2]

Bejan A., 1984, CONVECTION HEAT TRAN

[3]

BENAMMAR N, 1993, THESIS U TECHNOLOGIE

[4] Transient free convection in a vertical cylinder filled with granular product. Open at the extremities and heated with uniform heat flux density - Validity of the local thermal equilibrium hypothesis [J].

BenNasrallah, S ;

Amara, T ;

DuPeuty, MA .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1997, 40 (05) :1155-1168

[5]

BOUSSEHAIN R, 1985, CARACTERISATION THER, P137

[6] HEAT AND MASS-TRANSFER IN METAL HYDRIDE BEDS FOR HEAT-PUMP APPLICATIONS [J].

CHOI, H ;

MILLS, AF .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1990, 33 (06) :1281-1288

[7]

Combarnous MA., 1975, ADV HYDROSCI, V10, P231

[8]

DUBININ MM, 1968, CARBON, V6

[9]

GUILLEMINOT JJ, 1978, THESIS U DIJON

[10]

GUILLOMINOT JJ, 1981, REV GEN THERM

← 1 2 3 →