Performance enhancement of a desiccant evaporative cooling system using direct/indirect evaporative cooler

被引：49

作者：

Elgendy, E. ^{[1
]}

Mostafa, A. ^{[1
]}

Fatouh, M. ^{[1
]}

机构：

[1] Helwan Univ, Fac Engn El Mattaria, Dept Power Mech Engn, Cairo, Egypt

来源：

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2015年 / 51卷

关键词：

Desiccant evaporative cooler; Air conditioning; Exergy; Hot and humid climate; Desiccant wheel; 1ST;

D O I：

10.1016/j.ijrefrig.2014.12.009

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this paper, three novel desiccant evaporative cooling system configurations are proposed, simulated and compared with the conventional system under a wide range of ambient air temperature (30: 40 degrees C) and humidity ratio (0.01: 0.02 kg(v) kg(a)(-1)). In configuration-I, a direct/indirect evaporative cooling is inserted before the rotating heat exchanger. However, it is inserted after the rotating heat exchanger for system configuration-II. In configuration-III, an extra direct/indirect evaporative cooling is added in an opposite manner. Validation results confirm that, simulation and experimental results are in a good agreement with average errors of 2.23 and 3.87% for ambient air temperature and humidity ratio, respectively. Energetic analysis revealed that configuration-I has the highest cooling capacity while configuration-III has the highest thermal COP and air handling COP. Exergetic efficiency of config-III is higher than the conventional system with 54% as average value over the range of ambient air humidity. (C) 2014 Elsevier Ltd and IIR. All rights reserved.

引用

页码：77 / 87

页数：11

共 19 条

[1]

[Anonymous], 2014, EES ENG EQUATION SOL

[2]

Beckman W. A., 2004, TRNSYS 16 REFERENCE

[3] Comparison between the conventional and recirculation modes in desiccant cooling cycles and deriving critical efficiencies of components [J].

Bourdoukan, P. ;

Wurtz, E. ;

Joubert, P. .

ENERGY, 2010, 35 (02) :1057-1067

[4] Chilled ceiling and displacement ventilation aided with personalized evaporative cooler [J].

Chakroun, W. ;

Ghaddar, N. ;

Ghali, K. .

ENERGY AND BUILDINGS, 2011, 43 (11) :3250-3257

[5]

Dunkle R. V., 1975, MECH CHEM ENG T MC, VMC1

[6] Experimental study on a two-stage rotary desiccant cooling system [J].

Ge, T. S. ;

Li, Y. ;

Wang, R. Z. ;

Dai, Y. J. .

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 2009, 32 (03) :498-508

[7] The effects of operational conditions of the desiccant wheel on the performance of desiccant cooling cycles [J].

Heidarinejad, Ghassem ;

Pasdarshahri, Hadi .

ENERGY AND BUILDINGS, 2010, 42 (12) :2416-2423

[8] OPEN-CYCLE DESICCANT AIR-CONDITIONING AS AN ALTERNATIVE TO VAPOR COMPRESSION COOLING IN RESIDENTIAL APPLICATIONS [J].

JURINAK, JJ ;

MITCHELL, JW ;

BECKMAN, WA .

JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME, 1984, 106 (03) :252-260

[9] HIGH-PERFORMANCE, SOLID DESICCANT, OPEN COOLING CYCLES [J].

KANG, TS ;

MACLAINECROSS, IL .

JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME, 1989, 111 (02) :176-183

[10] Effect of ambient conditions on the first and second law performance of an open desiccant cooling process [J].

Kanoglu, Mehmet ;

Bolatturk, Ali ;

Altuntop, Necdet .

RENEWABLE ENERGY, 2007, 32 (06) :931-946

← 1 2 →