Predicting Smoke and Carbon Monoxide Detector Response in the Ceiling Jet in the Presence of a Smoke Layer.
Predicting Smoke and Carbon Monoxide Detector Response
in the Ceiling Jet in the Presence of a Smoke Layer.
(401 K)
Davis, W. D.; Cleary, T. G.; Donnelly, M. K.; Hellerman,
S. D.
NISTIR 6976; 35 p. July 2003.
Keywords:
smoke detectors; carbon monoxide; detector response;
ceiling jets; smoke layers; algorithms; experiments;
fire models
Abstract:
An algorithm for predicting smoke or carbon monoxide
concentration in the ceiling jet in the presence of a
smoke layer is developed. The analysis will be
restricted to fires that produce turbulent plumes and
can be represented by axisymmetric point sources. The
predictions of the algorithm for smoke and carbon
monoxide are compared with experiments. Once the smoke
or carbon monoxide concentration in the ceiling jet is
predicted, the activation times for detectors can be
calculated using a model for detector activation.
Building and Fire Research Laboratory
National Institute of Standards and Technology
Gaithersburg, MD 20899