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On the Performance of Diffuse Ceiling Ventilation in Classrooms: A Pre-Occupancy Study at a School in Southern Sweden

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Listed:
  • Too-Chukwu Cyracus Ogbuagu

    (Department of Building Engineering, Energy Systems and Sustainability Science, University of Gävle, Kungsbäcksvagen 47, 801 76 Gävle, Sweden)

  • Elisabet Linden

    (Department of Building Engineering, Energy Systems and Sustainability Science, University of Gävle, Kungsbäcksvagen 47, 801 76 Gävle, Sweden)

  • Douglas MacCutcheon

    (SG Ecophon AB, Box 500, 265 03 Hyllinge, Sweden)

  • Erling Nilsson

    (SG Ecophon AB, Box 500, 265 03 Hyllinge, Sweden)

  • Torbjorn Persson

    (SG Ecophon AB, Box 500, 265 03 Hyllinge, Sweden)

  • Alan Kabanshi

    (Department of Building Engineering, Energy Systems and Sustainability Science, University of Gävle, Kungsbäcksvagen 47, 801 76 Gävle, Sweden)

Abstract

The implementation and application of diffused ceiling ventilation (DCV) is gradually gaining momentum, especially in Denmark, Finland, and the Netherlands. In countries such as Sweden, the application is limited despite the favorable conditions for implementation. The current study investigates the performance of DCV and mixing ventilation in a pre-occupancy field study for newly renovated classrooms in Southern Sweden. Two classrooms at the school were installed with diffuse ceiling ventilation while the rest had mixing ventilation. The objective of the study was to compare and evaluate the ventilation performance in terms of indoor environmental quality parameters such as thermal comfort, air quality indexes, airflow, and temperature distribution. Pre-occupancy measurements were performed in two classrooms with similar room characteristics, with one room running under mixing ventilation and the other under DCV. Constant temperature anemometers, thermocouples, and INNOVA thermal comfort were used to measure the indoor air speeds, temperature, and thermal comfort, respectively. Tracer gas measurements, with SF 6 , were performed to assess air quality. Additionally acoustic measurements were conducted to assess the acoustic benefits of DCV on reducing ventilation noise. The results demonstrate that DCV offers similar indoor environmental conditions to mixing ventilation but has better acoustic performance especially on reducing the ventilation noise. Indoor environmental conditions were very homogeneous under DCV with mixing ventilation showing tendencies for short circuit ventilation. This study demonstrates that DCV has a potential for implementation in Swedish schools with minimal system modification on existing ventilation and air distribution systems.

Suggested Citation

  • Too-Chukwu Cyracus Ogbuagu & Elisabet Linden & Douglas MacCutcheon & Erling Nilsson & Torbjorn Persson & Alan Kabanshi, 2023. "On the Performance of Diffuse Ceiling Ventilation in Classrooms: A Pre-Occupancy Study at a School in Southern Sweden," Sustainability, MDPI, vol. 15(3), pages 1-17, January.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:3:p:2546-:d:1052631
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    References listed on IDEAS

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    1. 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. Aner Martinez-Soto & Carlos Jimenez-Gallardo & Andrés Villarroel-Lopez & Alejandro Reyes-Riveros & Johanna Höhl, 2024. "Toward Sustainable Indoor Environments: Assessing the Impact of Thermal Insulation Measures on Air Quality in Buildings—A Case Study in Temuco, Chile," Sustainability, MDPI, vol. 16(2), pages 1-17, January.

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