Abstract
Lifestyle developments on the global scale which manifest themselves in increased travel. increased elderly populations in assisted care facilities, and urbanization require increased attention to fire safety in dense occupation environments. Statistics spanning decades have shown that the key factor in fire fatalities is CO termed loosely smoke inhalation, not only in the fire enclosure but in areas remote from the flames. The current study was geared at developing correlations to relate the levels of CO, C 0 2 , and UHC produced and the amount of 0 2 depleted during compartment fires to the burning compartment global equivalence ratio (GER). This is a first step in a study, which will include a study of fire products transported to adjacent enclosures, and the developnlent of engineering correlations. Tests were conducted in a %-scale I S 0 compartment with fully scaled door openings, using n-hexane pool fires within the center of the compartment. Two fire scenarios were simulated, a fully and partially opened door, by varying the door width. The results, in form of concentrations of the fire products as a function of equivalence ratio (corrected for various transport times) were compared with previous hood and special configuration compartment studies. The present work indicated that the residence time of the gases within the compartment has an effect on both the carbon monoxide levels and the carbon dioxide levels. The narrow door configuration yields the lowest CO levels and the highest CO? levels. This is expected since the residence time of the gases within the narrow door (19.5 sec) is more than twice that of the baseline door (9.3 sec), therefore the there is more time for the CO to oxidize to C 0 2 . The unburned hydrocarbon levels are not effected by the residence times in this study since UHC's have a higher reaction rate than CO under the present fire condition. Therefore, the levels of UHC's will be dependent only on the availability of free oxygen.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.