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Experimental Investigation of Ventilation Performance of Different Air Distribution Systems in an Office Environment—Heating Mode

Author

Listed:
  • Arman Ameen

    (Department of Building Engineering, Energy Systems and Sustainability Science, University of Gävle, 801 76 Gävle, Sweden)

  • Mathias Cehlin

    (Department of Building Engineering, Energy Systems and Sustainability Science, University of Gävle, 801 76 Gävle, Sweden)

  • Ulf Larsson

    (Department of Building Engineering, Energy Systems and Sustainability Science, University of Gävle, 801 76 Gävle, Sweden)

  • Taghi Karimipanah

    (Department of Building Engineering, Energy Systems and Sustainability Science, University of Gävle, 801 76 Gävle, Sweden)

Abstract

A vital requirement for all-air ventilation systems are their functionality to operate both in cooling and heating mode. This article experimentally investigates two newly designed air distribution systems, corner impinging jet (CIJV) and hybrid displacement ventilation (HDV) in comparison against a mixing type air distribution system. These three different systems are examined and compared to one another to evaluate their performance based on local thermal comfort and ventilation effectiveness when operating in heating mode. The evaluated test room is an office environment with two workstations. One of the office walls, which has three windows, faces a cold climate chamber. The results show that CIJV and HDV perform similar to a mixing ventilation in terms of ventilation effectiveness close to the workstations. As for local thermal comfort evaluation, the results show a small advantage for CIJV in the occupied zone. Comparing C2-CIJV to C2-CMV the average draught rate (DR) in the occupied zone is 0.3% for C2-CIJV and 5.3% for C2-CMV with the highest difference reaching as high as 10% at the height of 1.7 m. The results indicate that these systems can perform as well as mixing ventilation when used in offices that require moderate heating. The results also show that downdraught from the windows greatly impacts on the overall airflow and temperature pattern in the room.

Suggested Citation

  • Arman Ameen & Mathias Cehlin & Ulf Larsson & Taghi Karimipanah, 2019. "Experimental Investigation of Ventilation Performance of Different Air Distribution Systems in an Office Environment—Heating Mode," Energies, MDPI, vol. 12(10), pages 1-13, May.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:10:p:1835-:d:231191
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    References listed on IDEAS

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    1. Baldi, Simone & Michailidis, Iakovos & Ravanis, Christos & Kosmatopoulos, Elias B., 2015. "Model-based and model-free “plug-and-play” building energy efficient control," Applied Energy, Elsevier, vol. 154(C), pages 829-841.
    2. Arman Ameen & Mathias Cehlin & Ulf Larsson & Taghi Karimipanah, 2019. "Experimental Investigation of the Ventilation Performance of Different Air Distribution Systems in an Office Environment—Cooling Mode," Energies, MDPI, vol. 12(7), pages 1-15, April.
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    Cited by:

    1. Zhonghua Zhang & Lingjie Zeng & Huixian Shi & Hua Liu & Wenjun Yin & Haowen Shen & Libin Yang & Jun Gao & Lina Wang & Yalei Zhang & Xuefei Zhou, 2021. "CFD Study on the Ventilation Effectiveness in a Public Toilet under Three Ventilation Methods," Energies, MDPI, vol. 14(24), pages 1-25, December.
    2. Alberto Meiss & Miguel Ángel Padilla-Marcos & Irene Poza-Casado & Antonio Álvaro-Tordesillas, 2020. "A Graphical Tool to Estimate the Air Change Efficiency in Rooms with Heat Recovery Systems," Sustainability, MDPI, vol. 12(3), pages 1-15, January.
    3. Harald Andersson & Mathias Cehlin & Bahram Moshfegh, 2022. "A Numerical and Experimental Investigation of a Confluent Jets Ventilation Supply Device in a Conference Room," Energies, MDPI, vol. 15(5), pages 1-30, February.
    4. Yaming Fan & Xiangdong Li & Minfeng Zheng & Rengui Weng & Jiyuan Tu, 2020. "Numerical Study on Effects of Air Return Height on Performance of an Underfloor Air Distribution System for Heating and Cooling," Energies, MDPI, vol. 13(5), pages 1-17, March.
    5. Harald Andersson & Alan Kabanshi & Mathias Cehlin & Bahram Moshfegh, 2020. "On the Ventilation Performance of Low Momentum Confluent Jets Supply Device in a Classroom," Energies, MDPI, vol. 13(20), pages 1-24, October.
    6. 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.
    7. Piotr Michalak, 2023. "Simulation and Experimental Study on the Use of Ventilation Air for Space Heating of a Room in a Low-Energy Building," Energies, MDPI, vol. 16(8), pages 1-17, April.

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