- Author
- Lock, A. | Ko, G. H. | Bundy, M. | Johnsson, E. L. | Hamins, A.
- Title
- Measurements in Standard Room Scale Fires.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Book or Conf
- Fire Safety Science. Proceedings. Ninth (9th) International Symposium. International Association for Fire Safety Science (IAFSS). September 21-26, 2008, Intl. Assoc. for Fire Safety Science, Boston, MA, Karlsruhe, Germany, Karlsson, B., Editors, 873-882 p., 2008
- Keywords
- fire safety | fire science | compartment fires | room fires | enclosures | gas sampling | thermocouples | gas chromatography | databases | validation | fire models | natural gas | IOS 9705 | scale models | experiments | heat release rate | temperature measurements | oxygen | hydorcarbons | carbon monoxide | carbon dioxide | large scale fire tests
- Identifiers
- gas sampling; aspirated thermocouples; comprehensive compartment fire database for validation of numerical fire modeling; Reduced-Scale Enclosures (RSE); Full-Scale Results (FSE); location of sampling points in the upper layer; mixture fraction analysis
- Abstract
- In this paper the results of a continuing effort to develop a comprehensive compartment fire database for validation of numerical fire modeling is presented. Natural gas fires were conducted inside a full-scale ISO 9705 room and are compared with previous results obtained in a 2/5 scale, reduced-scale enclosure. In these experiments, fires with heat release rates as large as 2.7 MW were used in the full-scale room. Gas species and temperature measurements were made inside the room at several locations in the upper layer and the doorway. Oxygen, CO/CO2, and total hydrocarbon gas analyzers were used in addition to gas chromatography to make gas species measurements. Temperature measurements were made in the upper layer of the room using aspirated thermocouples. Fires as large as 2.7 MW were observed not to produce underventilated compartment fire conditions in the full-scale enclosure despite the large heat release rate and temperatures observed in excess of 1200 °C. A comparison of the gas species in the upper layer of the reduced-scale and full-scale results showed similarities in terms of the gas species volume fractions when plotted as a function of mixture fraction, but the temperature results showed that the full-scale enclosure was reaching higher temperatures than the reduced-scale enclosure.