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Algorithm for Calculating the Plume Center Line Temperature and Ceiling Jet Temperature in the Presence of a Hot Upper Layer.


pdf icon Algorithm for Calculating the Plume Center Line Temperature and Ceiling Jet Temperature in the Presence of a Hot Upper Layer. (86 K)
Davis, W. D.; Notarianni, K. A.

Fire Research and Engineering, Second (2nd) International Conference. (ICFRE2). Proceedings. ABSTRACTS ONLY. National Institute of Standards and Technology and Society of Fire Protection Engineers. August 10-15, 1997, Gaithersburg, MD, Slaughter, K. C., Editor(s), 113-113 pp, 1997.

Keywords:

fire research; fire protection engineering; temperature; ceiling jets; pool fires; zone models; fire plumes; ceiling jets; sprinkler activation

Abstract:

[ABSTRACT ONLY] The analysis of recent experiments (NIST TN 1423) using JP-5 and JP-8 pool fires performed in 15 m and 22 m high hangars suggest that plume center line temperature correlations found in the computer fire model FPETool (NISTIR 5486-1) under predict the ceiling temperature for large fires. The analysis was based on the results of thirty-three fire tests which had heat release rates ranging from 100 kW to 33 MW and ambient temperatures ranging from 8 deg C to 31 deg C. The ceiling jet correlation also requries modification since a comparison of predicted sprinkler activation using FPETool to measured sprinkler activation met with only limited success. The purpose of this paper is to present a new plume algorithm for the predicted sprinkler activation using FPETool to measured spirnkler activation met with only limited success.