Luftflaskor i varma miljöer – En undersökning om uppvärmning av kompositflaskor till
(2011) In LUTVDG/TVBB--5354--SE VBRM01 20111Division 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:
http://lup.lub.lu.se/student-papers/record/1985744
- 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
- 2011
- 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}}, language = {{swe}}, note = {{Student Paper}}, series = {{LUTVDG/TVBB--5354--SE}}, title = {{Luftflaskor i varma miljöer – En undersökning om uppvärmning av kompositflaskor till}}, year = {{2011}}, }