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Hybrid Cooling Tower for a Solar Adsorption Cooling System: Comparative Study Between Dry and Wet Modes in Hot Working Conditions

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Environmentally-Benign Energy Solutions

Part of the book series: Green Energy and Technology ((GREEN))

Abstract

This study investigates the applicability of a hybrid cooling tower (HCT) of solar adsorption air-conditioning system in the hot working conditions of the region of Biskra, Algeria. A calculation method is presented to size the cooling tower and to define the main characteristics of the sprayed water. In addition, the effect of the ambient and humid temperatures on the heat transfer coefficients and the total heat transfer area were determined for both dry and wet modes. Results were compared with experimental measurement obtained from the literature, and good agreement was found. It has been concluded that the wet mode presents an effective solution for the region of Biskra. The ambient operating temperature limits of the cooling tower can be increased from 33 to 51 °C, respectively, for the dry and wet modes. Besides, it was found that the maximum mass flow rate of sprayed water is about 0.036 kg s−1 which is sufficient to operate the cooling tower and consequently the solar adsorption system.

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Abbreviations

A :

Total heat transfer area, m²

C f :

Factor of friction

Cp:

Heat capacity, J/kg K

D :

Diameter, m

F :

Correction factor

g :

Gravity, m/s²

h :

Convective heat transfer coefficient, W/m² K

H :

Enthalpy, kJ/kg

j :

Colburn factor

l :

Depth of the finned coil, m

L :

Height of the finned coil, m

L :

Latent heat, kJ

L t :

Length of the tube, m

\(\dot{m}\) :

Mass flow rate, kg/s

N :

Number of rows

Nu:

Nusselt number

P l :

Longitudinal pitch, m

Pr:

Prandtl number

P t :

Transverse pitch, m

\({\Re }\) :

Thermal resistance, W/K

Re:

Reynolds number

R ext :

Radius, m

S :

Surface per meter of length, m²/m

U :

Overall heat transfer coefficient, W/m² K

V :

Velocity, m/s

w :

Humidity, kg of water/kg dry air

ν :

Cinematic viscosity, m²/s

ϕ :

Heat flux, W

λ :

Themal conductivity, k s

μ :

Dynamic viscosity, Pa s

η :

Efficiency

ρ :

Density, kg/m3

a:

Air

pf:

Process fluid

f:

Fin

ai:

Air inlet

ao:

Air outlet

pfi:

Process fluid inlet

pfo:

Process fluid outlet

e:

External

h:

Hydraulic

i:

Internal

g:

Global

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Acknowledgements

This study was supported by the Algerian Ministry of Higher Education and Scientific Research as a part of PRFU project A11N01UN070120180004.

Author information

Authors and Affiliations

  1. Laboratoire de Génie Energétique et Matériaux (LGEM), Faculté des Sciences et de la Technologie, Université Mohamed Khider Biskra, BP 145, 07000, Biskra, Algeria

    Mohamed-Abdelbassit Kheireddine, Amar Rouag, Adel Benchabane & Nora Boutif

  2. Laboratoire de Développement des Energies Nouvelles et Renouvelables dans les Zones Arides et Sahariennes (LENREZA), Université Kasdi Merbah Ouargla, BP 511, 30000, Ouargla, Algeria

    Amar Rouag

  3. Laboratoire de Génie Mécanique (LGM), Faculté des Sciences et de la Technologie, Université Mohamed Khider Biskra, BP 145, 07000, Biskra, Algeria

    Adnane Labed

Authors
  1. Mohamed-Abdelbassit Kheireddine
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  2. Amar Rouag
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  3. Adel Benchabane
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  4. Nora Boutif
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  5. Adnane Labed
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Corresponding author

Correspondence to Mohamed-Abdelbassit Kheireddine .

Editor information

Editors and Affiliations

  1. Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, Oshawa, ON, Canada

    Ibrahim Dincer

  2. Dokuz Eylul University, Buca, Izmir, Turkey

    Can Ozgur Colpan

  3. Faculty of Engineering, Department of Mechanical Engineering, Dokuz Eylul University, Buca, Izmir, Turkey

    Mehmet Akif Ezan

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Kheireddine, MA., Rouag, A., Benchabane, A., Boutif, N., Labed, A. (2020). Hybrid Cooling Tower for a Solar Adsorption Cooling System: Comparative Study Between Dry and Wet Modes in Hot Working Conditions. In: Dincer, I., Colpan, C., Ezan, M. (eds) Environmentally-Benign Energy Solutions. Green Energy and Technology. Springer, Cham. https://doi.org/10.1007/978-3-030-20637-6_16

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  • DOI: https://doi.org/10.1007/978-3-030-20637-6_16

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-20636-9

  • Online ISBN: 978-3-030-20637-6

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