Irreversibilities in two configurations of the double generator absorption chiller - Comparison of performance

被引：9

作者：

Ben Ezzine, N ^{[1
]}

Barhoumi, M ^{[1
]}

Mejbri, K ^{[1
]}

Bellagi, A ^{[1
]}

机构：

[1] Ecol Natl Ingn Monastir, Dept energet, Unite Rech Therm & Thermodynam Proc Ind, Ibn El Jazzar 5019, Monastir, Tunisia

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2005年 / 80卷 / 02期

关键词：

ammonia-water; double effect absorption chiller; exergy; irreversibility; modeling; second law; simulation; thermodynamic analysis;

D O I：

10.1007/s10973-005-0679-5

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This paper deals with the modeling, thermodynamic analysis and comparison of irreversibility in two configurations of the double generator absorption chiller. First a computer simulation model is developed for each configuration on the basis of mass and energy balances. Simulation results were then used to analyse the entropy generation and irreversibility (or exergy destruction) of each component. It is found that the parallel flow configuration is more powerful than the serie flow configuration. Exergy losses in the parallel flow configuration are lower than that of the serie flow. The results indicate that the absorber and the solution heat exchangers have the most potential to improve the chiller energy efficiency. Also they indicate that focusing on irreversibility is more direct way of analysing the potential for improving the efficiency of ammonia-water absorption chiller.

引用

页码：471 / 475

页数：5

共 11 条

[1]

BENEZZINE N, 2003, REV GEN FROID, V1038, P15

[2]

BENEZZINE N, 2003, C FRANC THERM SFT200, P815

[3]

BENEZZINE N, 2003, REV GEN FROID, V1036, P23

[4]

DUMINIL M, 1992, REV GEN THERM, V362, P19

[5]

Herold K.E., 1996, Absorption Chillers and Heat Pumps

[6]

Jeong J., 2003, 21 IIR INT C REFR WA

[7]

Kotas T. J., 1987, EXERGY METHOD THERMA

[8]

Nasri K., 1997, THESIS I NATL POLYTE

[9]

Schaefer L. A., 1999, 2 LAW STUDY EINSTEIN

[10] NUMERICAL-SOLUTION OF CONSTRAINED NONLINEAR ALGEBRAIC EQUATIONS [J].

SHACHAM, M .

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, 1986, 23 (08) :1455-1481

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