Comparison of Ceiling Jet Temperatures Measured in an Aircraft Hangar Test Fire With Temperatures Predicted by the DETACT-QS and LAVENT Computer Models.
Comparison of Ceiling Jet Temperatures Measured in an
Aircraft Hangar Test Fire With Temperatures Predicted by
the DETACT-QS and LAVENT Computer Models.
(1983 K)
Walton, W. D.; Notarianni, K. A.
NISTIR 4947; 35 p. January 1993.
Sponsor:
U.S. Fire Administration, Emmitsburg, MD
General Services Administration, Washington, DC
Available from:
National Technical Information Service
Order number: PB93-158657
Keywords:
computer models; ceiling jets; temperature; aircraft
hangars; building technology; detector response; fire
models; fire plumes; fire tests; pool fires; response
time; sprinkler response
Abstract:
Prediction of the DETACT-QS and LAVENT computer fire
models are compared to temperature measurements made
during the calibration of the fire detection system in a
military aircraft hanger. Two 3.34 m2 isopropyl alcohol
pool fire tests of 60 second duration were conducted in
the 37 m by 40 m by 14 m high main hanger bay. Brass
disks with a known thermal response time index (RTI)
were used to simulate the thermal element in a sprinkler
or heat detector. Measurements were made of centerline
plume temperatures, and ceiling jet gas and disk
temperatures at radial distances of 0, 2.7, 5.5, 8.2,
and 11.0 m from the centerline of the fire, 380 mm below
the ceiling. At a radial distance of 5.5 m,
measurements of ceiling jet gas temperatures were also
made 150 and 610 mm below the ceiling. Comparisons of
predictions and measurements demonstrate some of the
strengths and weakness of DETACT-QS and LAVENT for this
fire scenario.
