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Plenum airflow distribution and its influence on the performance of a diffuse ceiling ventilation
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building Engineering, Energy Systems and Sustainability Science, Energy Systems and Building Technology. (Energy Systems)ORCID iD: 0000-0002-2171-3013
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building Engineering, Energy Systems and Sustainability Science, Energy Systems and Building Technology.
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building Engineering, Energy Systems and Sustainability Science.
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building Engineering, Energy Systems and Sustainability Science, Environmental Science. SG Ecophon AB..ORCID iD: 0000-0002-4947-4579
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2022 (English)In: E3S Web Conf. Volume 356, 2022 The 16th ROOMVENT Conference (ROOMVENT 2022) / [ed] Li A., Olofsson T., Kosonen R., Xian, 2022, Vol. 356, article id 01026Conference paper, Published paper (Refereed)
Abstract [en]

Implementation of diffuse ceiling ventilation (DCV) is slowly gaining momentum and applications in building ventilation have taken off with countries like Denmark, Finland and Netherlands taking the lead in Europe. However, DCV is yet to gain a foothold in Sweden and so not many installations are known, and their performance in relation to Swedish building practice is not yet established. A school in southern Sweden was subsequently renovated and two classrooms were equipped with a sound-absorbent suspended ceiling compatible with DCV. DCV has possible benefits for educational environments including improved thermal comfort as well as lower costs and noise levels. However, it is currently still unknown how supply conditions in the plenum affect the diffusion of air and resulting conditions within the room. To assess airflow characteristics and whether these influence flow conditions in the classroom, we investigated and compared the performance of DCV with two different supply conditions in the plenum. Air speeds and temperature distribution measurements in the plenum and classroom were performed with constant temperature anemometers and thermocouples respectively. The general observation from this study and the system setup herein is that airflow and temperature characteristics in the classroom were independent of the airflow conditions in the plenum. Further investigations in a controlled climate chamber are recommended to investigate and optimise system performance in accordance with Swedish building practice.

Place, publisher, year, edition, pages
Xian, 2022. Vol. 356, article id 01026
Keywords [en]
Air Distribution, Indoor Environment, Diffuse Ceiling Ventilation
National Category
Building Technologies
Research subject
Sustainable Urban Development
Identifiers
URN: urn:nbn:se:hig:diva-39952DOI: 10.1051/e3sconf/202235601026Scopus ID: 2-s2.0-85146846926OAI: oai:DiVA.org:hig-39952DiVA, id: diva2:1696787
Conference
16th ROOMVENT Conference, ROOMVENT 2022, Xi'an, China, 16-19 September 2022
Available from: 2022-09-19 Created: 2022-09-19 Last updated: 2023-02-06Bibliographically approved

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Kabanshi, AlanLinden, ElisabetMacCutcheon, Douglas

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