Analytical solutions of coupled heat and mass transfer processes in liquid desiccant air dehumidifier/regenerator

被引：130

作者：

Liu, Xiaohua ^{[1
]}

Jiang, Yi ^{[1
]}

Xia, Jianjun ^{[1
]}

Chang, Xiaomin ^{[1
]}

机构：

[1] Tsing Hua Univ, Sch Architecture, Dept Bldg Sci, Beijing 100084, Peoples R China

来源：

ENERGY CONVERSION AND MANAGEMENT | 2007年 / 48卷 / 07期

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

dehumidifier; regenerator; liquid desiccant; heat and mass transfer; analytical solution;

D O I：

10.1016/j.enconman.2006.12.009

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The dehumidifier and regenerator are key components in liquid desiccant air conditioning systems. Many researchers have developed mathematical models of the coupled heat and mass transfer processes in the dehumidifier or regenerator, and most of the models were solved numerically. Compared with numerical solutions, analytical solutions have more advantages in analyzing the parameters that affect the heat and mass transfer performance. This paper presents analytical solutions of the air and desiccant parameters inside the parallel flow, counter flow and cross flow dehumidifier/regenerator under some reasonable assumptions based on the available heat and mass transfer models. The analytical solutions of the air and desiccant parameters within the dehumidifier/regenerator show good agreement with the corresponding numerical results, and the analytical solutions of the enthalpy and moisture efficiencies agree well with experimental findings. The method developed here can be used in the optimal design of the dehumidifier or regenerator. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：2221 / 2232

页数：12

共 19 条

[1] Effect of bilobalide on peripheral nerve regeneration [J].

Chen, YS ;

Liu, CJ ;

Cheng, CY ;

Yao, CH .

BIOMATERIALS, 2004, 25 (03) :509-514

[2] Comparison between random and structured packings for dehumidification of air by lithium chloride solutions in a packed column and their heat and mass transfer correlations [J].

Chung, TW ;

Ghosh, TK ;

Hines, AL .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1996, 35 (01) :192-198

[3] Numerical simulation and theoretical analysis of heat and mass transfer in a cross flow liquid desiccant air dehumidifier packed with honeycomb paper [J].

Dai, YJ ;

Zhang, HF .

ENERGY CONVERSION AND MANAGEMENT, 2004, 45 (9-10) :1343-1356

[4] A PACKED-BED DEHUMIDIFIER-REGENERATOR FOR SOLAR AIR-CONDITIONING WITH LIQUID DESICCANTS [J].

FACTOR, HM ;

GROSSMAN, G .

SOLAR ENERGY, 1980, 24 (06) :541-550

[5] Study of an aqueous lithium chloride desiccant system: Air dehumidification and desiccant regeneration [J].

Fumo, N ;

Goswami, DY .

SOLAR ENERGY, 2002, 72 (04) :351-361

[6] CALCULATION OF HEAT AND MASS-TRANSFER COEFFICIENTS IN A PACKED TOWER OPERATING WITH A DESICCANT-AIR CONTACT SYSTEM [J].

GANDHIDASAN, P ;

KETTLEBOROUGH, CF ;

ULLAH, MR .

JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME, 1986, 108 (02) :123-128

[7] Experimental studies on the dehumidifier and regenerator of a liquid desiccant cooling system [J].

Jain, S ;

Dhar, PL ;

Kaushik, SC .

APPLIED THERMAL ENGINEERING, 2000, 20 (03) :253-267

[8] Thermodynamic properties of lithium bromide-water solutions at high temperatures [J].

Kaita, Y .

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 2001, 24 (05) :374-390

[9]

Khan AY, 1998, INT J ENERG RES, V22, P813, DOI 10.1002/(SICI)1099-114X(199807)22:9<813::AID-ER403>3.0.CO

[10]

2-M

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