P2.9.26 Fire Gas Transport Phenomena Beneath Ceilings

D. Gutmacher, J. Wöllenstein, S. Künzli & U. Hoefer
We report on low-power gas sensors in fire safety applications and focus on the analysis of gas propagation behavior. We measured with a variety of gas sensors their performance and the spreading behavior of gas during fire test scenarios. We observed that during slow developing smoldering fires with low convection and especially when heat layers are generated at the ceiling, gases can be detected faster than smoke. The gas diffusion through a heat layer was...