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Comparison of Sprinkler Activation in Flat and Sloping Ceilings using FDS 6

Carlsson, Erik LU (2013) In LUTVDG/TVBB VBRM01 20122
Division of Fire Safety Engineering
Division of Risk Management and Societal Safety
Abstract
The purpose of this report is to investigate the implications of installing sprinkler systems in ceilings with a ceiling slope exceeding the maximum permitted by NFPA 13, being 9.5 ° or 18.44 ° depending on the type of sprinkler system. The objective of the report is to present a comparison and analysis of sprinkler activation times and patterns for sprinkler systems installed in ceilings with different slope angles, using Fire Dynamics Simulator version 6 Release Candidate 1. The problem has been defined as: how does the ceiling slope angle where sprinklers are provided affect the activation of sprinklers? It has been demonstrated that a ceiling slope of up to 26.57 ° may not affect the sprinkler activation pattern. It has also been... (More)
The purpose of this report is to investigate the implications of installing sprinkler systems in ceilings with a ceiling slope exceeding the maximum permitted by NFPA 13, being 9.5 ° or 18.44 ° depending on the type of sprinkler system. The objective of the report is to present a comparison and analysis of sprinkler activation times and patterns for sprinkler systems installed in ceilings with different slope angles, using Fire Dynamics Simulator version 6 Release Candidate 1. The problem has been defined as: how does the ceiling slope angle where sprinklers are provided affect the activation of sprinklers? It has been demonstrated that a ceiling slope of up to 26.57 ° may not affect the sprinkler activation pattern. It has also been demonstrated that the increased sprinkler activation times and changed patterns exhibited for sprinkler systems in sloping ceilings may be a result of a combination of excessive ceiling height and ceiling slope angle, subject to discussion. Reduced Response Time Index and activation temperature can reduce activation pattern discrepancies and reduce activation times. The intent of the sprinkler system may not be compromised when ceiling slopes exceeding those specified in NFPA 13 are introduced. (Less)
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author
Carlsson, Erik LU
supervisor
organization
course
VBRM01 20122
year
type
M2 - Bachelor Degree
subject
keywords
Sprinkler activation, fire sprinkler, fire suppression, actuation, sloping ceiling, slope, CFD, Computational Fluid Dynamics, Fire Dynamics Simulator, FDS, FDS 6, NFPA 13, sprinkler activation pattern, sprinkler suppression.
publication/series
LUTVDG/TVBB
report number
5404
ISSN
1402-3504
language
English
id
3563868
date added to LUP
2013-05-30 14:31:33
date last changed
2014-03-10 10:40:44
@misc{3563868,
  abstract     = {The purpose of this report is to investigate the implications of installing sprinkler systems in ceilings with a ceiling slope exceeding the maximum permitted by NFPA 13, being 9.5 ° or 18.44 ° depending on the type of sprinkler system. The objective of the report is to present a comparison and analysis of sprinkler activation times and patterns for sprinkler systems installed in ceilings with different slope angles, using Fire Dynamics Simulator version 6 Release Candidate 1. The problem has been defined as: how does the ceiling slope angle where sprinklers are provided affect the activation of sprinklers? It has been demonstrated that a ceiling slope of up to 26.57 ° may not affect the sprinkler activation pattern. It has also been demonstrated that the increased sprinkler activation times and changed patterns exhibited for sprinkler systems in sloping ceilings may be a result of a combination of excessive ceiling height and ceiling slope angle, subject to discussion. Reduced Response Time Index and activation temperature can reduce activation pattern discrepancies and reduce activation times. The intent of the sprinkler system may not be compromised when ceiling slopes exceeding those specified in NFPA 13 are introduced.},
  author       = {Carlsson, Erik},
  issn         = {1402-3504},
  keyword      = {Sprinkler activation,fire sprinkler,fire suppression,actuation,sloping ceiling,slope,CFD,Computational Fluid Dynamics,Fire Dynamics Simulator,FDS,FDS 6,NFPA 13,sprinkler activation pattern,sprinkler suppression.},
  language     = {eng},
  note         = {Student Paper},
  series       = {LUTVDG/TVBB},
  title        = {Comparison of Sprinkler Activation in Flat and Sloping Ceilings using FDS 6},
  year         = {2013},
}