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Monte Carlo Simulations of Radiative Transfer in a House Including Specular and Diffuse Reflections for the Evaluation of Two Wavelength Optical Fire Detectors.


pdf icon Monte Carlo Simulations of Radiative Transfer in a House Including Specular and Diffuse Reflections for the Evaluation of Two Wavelength Optical Fire Detectors. (236 K)
Sivathanu, Y. R.; Gore, J. P.; Zhu, Y. J.

NISTIR 6242; October 1998.

National Institute of Standards and Technology. Annual Conference on Fire Research: Book of Abstracts. November 2-5, 1998, Gaithersburg, MD, Beall, K. A., Editor(s), 5-6 pp, 1998.

Sponsor:

National Institute of Standards and Technology, Gaithersburg, MD

Available from:

National Technical Information Service
Order number: PB99-102519

Keywords:

fire research; fire science; fire suppression; fire detectors; monte carlo method; radiative heat transfer; evaluation; thermal radiation

Abstract:

Fire detectors based on sensing thermal radiation from a strating fire have the potential to provide early warning and improve fire safety and reduce fire loss. However, these detectors must rely on sensing and discriminating radiation signals of a starting fire from those of common sources such as the sun, room lights and others. The radiaiton signal incident on a detector may have undergone multiple relfections at the walls with complex properties and configuration factors. Effective radiation temperature based on measurement of intensities at two wavelengths is one of the fire characteristics used in many flame sensors.