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Air flows in a school with fan-assisted natural ventilation, with the focus on the opening of the exhaust windows

Nordquist, Birgitta LU (2008) 11th International Conference on Indoor Air Quality and Climate, 2008 Paper ID 541.
Abstract
In schools the air flow is one of the most important factors with regard to the well-being and performance of the children. Some school buildings have a fan assisted natural ventilation system. In some buildings windows are the only exhaust air component. The teachers can be requested to take an active part in the control of these ventilation systems. The objective is to examine the air flows and air directions when the exhaust windows are in different positions. This is studied by computer calculations with the program PFS. The results show that when all openings are opened as intended the required air flows are attained. When exhaust openings are opened in an unintended position, cases with very low or reverse air flow may occur. The... (More)
In schools the air flow is one of the most important factors with regard to the well-being and performance of the children. Some school buildings have a fan assisted natural ventilation system. In some buildings windows are the only exhaust air component. The teachers can be requested to take an active part in the control of these ventilation systems. The objective is to examine the air flows and air directions when the exhaust windows are in different positions. This is studied by computer calculations with the program PFS. The results show that when all openings are opened as intended the required air flows are attained. When exhaust openings are opened in an unintended position, cases with very low or reverse air flow may occur. The position of the exhaust openings seems to be significant for the amount of supply air flow, implying that the position of the exhaust openings should be carefully monitored. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Ventilation, Air flow, Reverse flow, Exhaust opening, Window, Fan assisted natural ventilation
host publication
Proceedings of Indoor Air 2008
volume
Paper ID 541
pages
8 pages
publisher
International Society of Indoor Air Quality and Climate (ISIAQ)
conference name
11th International Conference on Indoor Air Quality and Climate, 2008
conference location
Copenhagen, Denmark
conference dates
2008-08-17 - 2008-08-22
language
English
LU publication?
yes
id
292da3e0-771e-4388-866e-5296ece70c0c (old id 3173356)
date added to LUP
2016-04-04 11:35:36
date last changed
2020-06-03 17:08:55
@inproceedings{292da3e0-771e-4388-866e-5296ece70c0c,
  abstract     = {{In schools the air flow is one of the most important factors with regard to the well-being and performance of the children. Some school buildings have a fan assisted natural ventilation system. In some buildings windows are the only exhaust air component. The teachers can be requested to take an active part in the control of these ventilation systems. The objective is to examine the air flows and air directions when the exhaust windows are in different positions. This is studied by computer calculations with the program PFS. The results show that when all openings are opened as intended the required air flows are attained. When exhaust openings are opened in an unintended position, cases with very low or reverse air flow may occur. The position of the exhaust openings seems to be significant for the amount of supply air flow, implying that the position of the exhaust openings should be carefully monitored.}},
  author       = {{Nordquist, Birgitta}},
  booktitle    = {{Proceedings of Indoor Air 2008}},
  keywords     = {{Ventilation; Air flow; Reverse flow; Exhaust opening; Window; Fan assisted natural ventilation}},
  language     = {{eng}},
  publisher    = {{International Society of Indoor Air Quality and Climate (ISIAQ)}},
  title        = {{Air flows in a school with fan-assisted natural ventilation, with the focus on the opening of the exhaust windows}},
  volume       = {{Paper ID 541}},
  year         = {{2008}},
}