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Numerical Analysis of Building Cooling Using New Passive Downdraught Evaporative Tower Configuration in an Arid Climate

Author

Listed:
  • Mohammad Abdullah Alshenaifi

    (Department of Architectural Engineering, College of Engineering, University of Ha’il, Ha’il 2440, Saudi Arabia)

  • Abdelhakim Mesloub

    (Department of Architectural Engineering, College of Engineering, University of Ha’il, Ha’il 2440, Saudi Arabia)

  • Walid Hassen

    (Laboratory of Metrology and Energy Systems, University of Monastir, Monastir 5000, Tunisia)

  • Mohammed Awad Abuhussain

    (Architectural Engineering Department, College of Engineering, Najran University, Najran 66291, Saudi Arabia)

  • Lioua Kolsi

    (Department of Mechanical Engineering, College of Engineering, University of Ha’il, Ha’il 2440, Saudi Arabia)

Abstract

Building energy consumption in hot arid climates is dominated by air conditioning use. Therefore, using passive cooling methods could reduce this demand, improve resource efficiency, and decrease carbon emissions. In this study, an innovative configuration of a passive downdraught evaporative cooling (PDEC) tower is investigated numerically. The governing equations are solved using the finite element method (FEM), and the effects of inlet velocity (0.5 m·s −1 ≤ u in ≤ 3 m·s −1 ) and temperature (35 °C ≤ T in ≤ 45 °C) on the fluid structure, temperature field, and relative humidity are studied for three cases related to the position of the air outlet. The flow is considered as turbulent, and the building walls and the tower are assumed to be thermally well insulated. The PDEC tower is equipped with two vertical isotropic saturated porous layers. The results revealed that the inlet velocity and temperature play an essential role in the quality of the indoor temperature. In fact, the temperature can be reduced by about 7 degrees, and the relative humidity can be enhanced by 9% for lower inlet velocities.

Suggested Citation

  • Mohammad Abdullah Alshenaifi & Abdelhakim Mesloub & Walid Hassen & Mohammed Awad Abuhussain & Lioua Kolsi, 2022. "Numerical Analysis of Building Cooling Using New Passive Downdraught Evaporative Tower Configuration in an Arid Climate," Mathematics, MDPI, vol. 10(19), pages 1-16, October.
    • Handle: RePEc:gam:jmathe:v:10:y:2022:i:19:p:3616-:d:932352
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    References listed on IDEAS

    as
    1. Kang, Daeho & Strand, Richard K., 2016. "Significance of parameters affecting the performance of a passive down-draft evaporative cooling (PDEC) tower with a spray system," Applied Energy, Elsevier, vol. 178(C), pages 269-280.
    2. Piotr Michalak, 2022. "Thermal—Airflow Coupling in Hourly Energy Simulation of a Building with Natural Stack Ventilation," Energies, MDPI, vol. 15(11), pages 1-18, June.
    3. Mesloub, Abdelhakim & Ghosh, Aritra & Touahmia, Mabrouk & Albaqawy, Ghazy Abdullah & Alsolami, Badr M. & Ahriz, Atef, 2022. "Assessment of the overall energy performance of an SPD smart window in a hot desert climate," Energy, Elsevier, vol. 252(C).
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