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Evaluating methods for preventing smoke spread through ventilation systems using fire dynamics simulator

Wahlqvist, Jonathan LU and van Hees, Patrick LU (2016) In Fire and Materials
Abstract

Fires in enclosures equipped with mechanical ventilation remain one of the key issues for fire safety assessment in multifamily homes and industries. Therefore, a wide variation of methods for preventing smoke spread through the ventilation system exist and are applied, in performance-based designs. Through the use of the heating, ventilation and air conditioning (HVAC) model in the fire dynamics simulator, several different common and less common methods for preventing smoke spread in the ventilation system were tested. The effects on smoke spread with changing building leakage and fire growth rates were also investigated. The results were evaluated by determining the total soot spread from the fire room to other compartments connected... (More)

Fires in enclosures equipped with mechanical ventilation remain one of the key issues for fire safety assessment in multifamily homes and industries. Therefore, a wide variation of methods for preventing smoke spread through the ventilation system exist and are applied, in performance-based designs. Through the use of the heating, ventilation and air conditioning (HVAC) model in the fire dynamics simulator, several different common and less common methods for preventing smoke spread in the ventilation system were tested. The effects on smoke spread with changing building leakage and fire growth rates were also investigated. The results were evaluated by determining the total soot spread from the fire room to other compartments connected to the ventilation system, as well as soot/thermal load on the fans and system in general. The maximum and average heat release rate was also of interest and hence compared between systems. It was found that, while many methods perform similar, a few proven methods, such as fire and smoke dampers, performed very well with very little smoke spread to the rest of the system. The study should be considered as an introduction to implementing a similar methodology in specific cases because different ventilations systems will present very different challenges and weaknesses.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
Design fires, FDS, HVAC, Smoke spread, Ventilation
in
Fire and Materials
publisher
John Wiley & Sons
external identifiers
  • scopus:84990217939
ISSN
0308-0501
DOI
10.1002/fam.2404
language
English
LU publication?
yes
id
5c3d02c6-bea9-4101-9de4-eafa653db428
date added to LUP
2016-11-05 13:58:14
date last changed
2017-02-23 09:08:01
@article{5c3d02c6-bea9-4101-9de4-eafa653db428,
  abstract     = {<p>Fires in enclosures equipped with mechanical ventilation remain one of the key issues for fire safety assessment in multifamily homes and industries. Therefore, a wide variation of methods for preventing smoke spread through the ventilation system exist and are applied, in performance-based designs. Through the use of the heating, ventilation and air conditioning (HVAC) model in the fire dynamics simulator, several different common and less common methods for preventing smoke spread in the ventilation system were tested. The effects on smoke spread with changing building leakage and fire growth rates were also investigated. The results were evaluated by determining the total soot spread from the fire room to other compartments connected to the ventilation system, as well as soot/thermal load on the fans and system in general. The maximum and average heat release rate was also of interest and hence compared between systems. It was found that, while many methods perform similar, a few proven methods, such as fire and smoke dampers, performed very well with very little smoke spread to the rest of the system. The study should be considered as an introduction to implementing a similar methodology in specific cases because different ventilations systems will present very different challenges and weaknesses.</p>},
  author       = {Wahlqvist, Jonathan and van Hees, Patrick},
  issn         = {0308-0501},
  keyword      = {Design fires,FDS,HVAC,Smoke spread,Ventilation},
  language     = {eng},
  publisher    = {John Wiley & Sons},
  series       = {Fire and Materials},
  title        = {Evaluating methods for preventing smoke spread through ventilation systems using fire dynamics simulator},
  url          = {http://dx.doi.org/10.1002/fam.2404},
  year         = {2016},
}