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Investigation of air quality, comfort parameters and effectiveness for two floor-level air supply systems in classrooms
University of Gävle, Department of Technology and Built Environment, Ämnesavdelningen för inomhusmiljö. Fresh AB, Sweden; University of Reading, UK.
University of Reading, United Kingdom . (Energy and Environment)
University of Gävle, Department of Technology and Built Environment, Ämnesavdelningen för inomhusmiljö.
University of Gävle, Department of Technology and Built Environment, Ämnesavdelningen för inomhusmiljö.
2007 (English)In: Building and Environment, ISSN 0360-1323, E-ISSN 1873-684X, Vol. 42, no 2, 647-655 p.Article in journal (Refereed) Published
Abstract [en]

The method of distributing the outdoor air in classrooms has a major impact on indoor air quality and thermal comfort of pupils. In a previous study, ([11] Karimipanah T, Sandberg M, Awbi HB. A comparative study of different air distribution systems in a classroom. In: Proceedings of Roomvent 2000, vol. II, Reading, UK, 2000. p. 1013-18; [13] Karimipanah T, Sandberg M, Awbi HB, Blomqvist C. Effectiveness of confluent jets ventilation system for classrooms. In: Idoor Air 2005, Beijing, China, 2005 (to be presented).) presented results for four and two types of air distribution systems tested in a purpose built classroom with simulated occupancy as well as computational fluid dynamics (CFD) modelling. In this paper, the same experimental setup has been used to investigate the indoor environment in the classroom using confluent jet ventilation, see also ([12] Cho YJ, Awbi HB, Karimipanah T. The characteristics of wall confluent jets for ventilated enclosures. In: Proceedings of Roomvent 2004, Coimbra, Portugal, 2004.) Measurements of air speed, air temperature and tracer gas concentrations have been carried out for different thermal conditions. In addition, 56 cases of CFD simulations have been carried to provide additional information on the indoor air quality and comfort conditions throughout the classroom, such as ventilation effectiveness, air exchange effectiveness, effect of flow rate, effect of radiation, effect of supply temperature, etc., and these are compared with measured data.

Place, publisher, year, edition, pages
2007. Vol. 42, no 2, 647-655 p.
Keyword [en]
air distribution index; school ventilation; full-scale measurements; CFD; displacement system; wall confluent jets system; ventilation effectiveness
National Category
Other Engineering and Technologies
Identifiers
URN: urn:nbn:se:hig:diva-17828DOI: 10.1016/j.buildenv.2005.10.016ISI: 000245165700015Scopus ID: 2-s2.0-33748939765OAI: oai:DiVA.org:hig-17828DiVA: diva2:761863
Available from: 2014-11-09 Created: 2014-11-09 Last updated: 2017-12-05Bibliographically approved

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