Air Movements through Horizontal Openings in Buildings – A Model Study
2004 (English)In: The International Journal of Ventilation, ISSN 1473-3315, Vol. 3, no 1, 1-10 p.Article in journal (Refereed) Published
A building contains a number of large openings like doors and staircases. When the temperature of the spaces connected by these openings differs, the difference in density will cause air movements through them. Horizontal air movements through vertical openings in buildings like doors and windows are well investigated while studies of air movements through horizontal openings like stairwells are less frequent and therefore this work is focusing on this case.
The paper reports on an experimental study of the possibility of using buoyancy forces to distribute air and heat through horizontal openings. The experiments have been carried out in a scale model with water as the operating fluid.
The result of the study shows that the flow rate through a horizontal opening is roughly half of the flow rate through a vertical opening for the same conditions, probably caused by the more complex flow pattern in the horizontal opening. A staircase below the horizontal opening will guide the flow somewhat and will cause a small increase of the fluid exchange through the opening.
Place, publisher, year, edition, pages
2004. Vol. 3, no 1, 1-10 p.
air movement, staircase, horizontal openings, salt bath method
IdentifiersURN: urn:nbn:se:kth:diva-13960OAI: oai:DiVA.org:kth-13960DiVA: diva2:328626
QC 201007052010-07-052010-07-052010-07-20Bibliographically approved