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Luftflaskor i varma miljöer – En undersökning om uppvärmning av kompositflaskor till

Löfström Johnsson, Tor and Roden, Kristoffer (2011) In LUTVDG/TVBB--5354--SE VBRM01 20111
Division of Fire Safety Engineering
Fire Protection Engineering 3,5 years
Division of Risk Management and Societal Safety
Abstract (Swedish)
With this work we have investigated how the air in the air cylinders of portable breathing apparatuses
is heated during work in hot environments equal to those of interior fire extinguishing. The laws,
regulations and standards concerning breathing apparatuses have been reviewed. We describe the
theoretical relationships between heating and cooling as a result of air outtake and compare these to
empirical tests, executed by measuring pressure and temperature at exposure to hot environments. The
exposure lasted for five minutes at 250 °C and for 20 minutes at 115 °C. Our results show that the
temperature of the gas does not exceed the maximum usage temperature provided by the
manufacturers and that the heating does not imply any risk... (More)
With this work we have investigated how the air in the air cylinders of portable breathing apparatuses
is heated during work in hot environments equal to those of interior fire extinguishing. The laws,
regulations and standards concerning breathing apparatuses have been reviewed. We describe the
theoretical relationships between heating and cooling as a result of air outtake and compare these to
empirical tests, executed by measuring pressure and temperature at exposure to hot environments. The
exposure lasted for five minutes at 250 °C and for 20 minutes at 115 °C. Our results show that the
temperature of the gas does not exceed the maximum usage temperature provided by the
manufacturers and that the heating does not imply any risk for the user. The cooling effect due to air
outtake is distinct and compensates to some extent the heating from the surrounding environment. (Less)
Please use this url to cite or link to this publication:
author
Löfström Johnsson, Tor and Roden, Kristoffer
supervisor
organization
alternative title
Air cylinders in hot environments – An investigation of composite cylinders used in self
course
VBRM01 20111
year
type
M2 - Bachelor Degree
subject
keywords
Luftflaskor, gasflaskor, kompositflaskor, andningsapparater, skyddsutrustning, räddningstjänst. Air cylinders, composite cylinders, firefighter equipment, SCBA, self contained breathing apparatus.
publication/series
LUTVDG/TVBB--5354--SE
report number
5354
ISSN
1402-3504
language
Swedish
id
1985744
date added to LUP
2011-06-27 13:09:26
date last changed
2014-03-10 10:40:38
@misc{1985744,
  abstract     = {With this work we have investigated how the air in the air cylinders of portable breathing apparatuses
is heated during work in hot environments equal to those of interior fire extinguishing. The laws,
regulations and standards concerning breathing apparatuses have been reviewed. We describe the
theoretical relationships between heating and cooling as a result of air outtake and compare these to
empirical tests, executed by measuring pressure and temperature at exposure to hot environments. The
exposure lasted for five minutes at 250 °C and for 20 minutes at 115 °C. Our results show that the
temperature of the gas does not exceed the maximum usage temperature provided by the
manufacturers and that the heating does not imply any risk for the user. The cooling effect due to air
outtake is distinct and compensates to some extent the heating from the surrounding environment.},
  author       = {Löfström Johnsson, Tor and Roden, Kristoffer},
  issn         = {1402-3504},
  keyword      = {Luftflaskor,gasflaskor,kompositflaskor,andningsapparater,skyddsutrustning,räddningstjänst.
Air cylinders,composite cylinders,firefighter equipment,SCBA,self contained breathing apparatus.},
  language     = {swe},
  note         = {Student Paper},
  series       = {LUTVDG/TVBB--5354--SE},
  title        = {Luftflaskor i varma miljöer – En undersökning om uppvärmning av kompositflaskor till},
  year         = {2011},
}