WSTA 15th Gulf Water Conference

WSTA 15th Gulf Water Conference
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Computational modelling of the performance of integrated building evaporative cooling system in Algeria climate

Karima Sellami, Nadjla Cherifi, Zineb Benhenni, Nabila Labsi, Youb Khaled Benkahla

https://doi.org/10.5004/ic202403

Computational modelling of the performance of integrated building evaporative cooling system in Algeria climate

Karima Sellami*, Nadjla Cherifi, Zineb Benhenni, Nabila Labsi, Youb Khaled Benkahla

Laboratoire de Phénomènes de Transfert, RSNE, FGMGP, USTHB, Alger, Algérie

*Corresponding author

https://doi.org/10.5004/ic202403

ABSTRACT

This work aims to improve the thermal performance of a building-integrated chiller for Algerian climates. This study presents a new approach in which evaporative cooling is integrated to unveil notable energy improvements compared to conventional air conditioning systems. Therefore, this paper deals with numerical study of integrated building evaporative cooling process of ambient air considering Algeria climate. The water and air streams are modeled as two coupled laminar boundary layers incorporating non-Darcian models of the inertia and boundary effects for the water flow. The governing equations and the associated boundary conditions are discretized by means of the finite volume method implemented on a staggered mesh and the velocity pressure coupling is processed by the SIMPLER algorithm. The influences of the Reynolds number, porous layer thickness and the porosity on the evaporative cooling process are analyzed. The results show that these parameters have significant impact on the air-cooling. Thus, the air temperature witnesses a remarkable decrease by increasing the porosity and the porous layer thickness. However, decreasing air velocity could improve air-cooling.

Keywords: Evaporative cooler; Cooling process; Porous layer; Porosity

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