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Analysis of the Velocity Distribution in the Plenum Box with Various Entries

Author

Listed:
  • Joanna Halibart

    (Faculty of Civil Engineering and Resource Management, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland)

  • Klaudia Zwolińska

    (Faculty of Civil Engineering and Resource Management, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland)

  • Marek Borowski

    (Faculty of Civil Engineering and Resource Management, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland)

  • Marek Jaszczur

    (Faculty of Energy and Fuels, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland)

Abstract

The ventilation system plays a crucial role in every building. Proper design and optimization of its operation increase the comfort of users due to efficient air exchange and at the same time control its velocity in the rooms. The aim of this paper is the analysis of the effect of plenum box entry on the velocity profile concerning the diffuser face panel. This issue may sometimes be ignored at the design stage but can significantly affect the airflow from the diffuser and consequently increase the risk of draft. The results of the PIV experimental measurements and numerical simulations concerning various entries of the plenum box (top and side) were investigated in this study. The measurements were used to develop the mathematical and numerical models, which were then used to assess the effect of localization of the spigot of the plenum box on its operation. The numerical analysis was carried out on plenum boxes with the air diffuser with a face panel composed of square grid perforations. Analyses show that the entries significantly affect both the way of air distribution inside the plenum box and the profile of the airflow and its velocity under the simulated air diffuser.

Suggested Citation

  • Joanna Halibart & Klaudia Zwolińska & Marek Borowski & Marek Jaszczur, 2021. "Analysis of the Velocity Distribution in the Plenum Box with Various Entries," Energies, MDPI, vol. 14(12), pages 1-17, June.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:12:p:3630-:d:577356
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    References listed on IDEAS

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    1. Maria Hurnik & Jan Kaczmarczyk & Zbigniew Popiolek, 2021. "Study of Radial Wall Jets from Ceiling Diffusers at Variable Air Volume," Energies, MDPI, vol. 14(1), pages 1-18, January.
    2. Alessandro Nocente & Tufan Arslan & Steinar Grynning & Francesco Goia, 2020. "CFD Study of Diffuse Ceiling Ventilation through Perforated Ceiling Panels," Energies, MDPI, vol. 13(8), pages 1-14, April.
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    Cited by:

    1. Kaijun Li & Linye Song & Xinghui Zhang & Qi Wang & Jing Hua, 2023. "Study of Influence of Boundary Condition of Diffuser with Non-Uniform Velocity on the Jet Characteristics and Indoor Flow Field," Energies, MDPI, vol. 16(3), pages 1-17, January.
    2. Yat Huang Yau & Umair Ahmed Rajput & Altaf Hussain Rajpar & Natalia Lastovets, 2022. "Effects of Air Supply Terminal Devices on the Performance of Variable Refrigerant Flow Integrated Stratum Ventilation System: An Experimental Study," Energies, MDPI, vol. 15(4), pages 1-23, February.

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