Laboratory experiments were conducted to determine the responses of a prototype smoke detector and
a commercially available photoelectric smoke detector to smoke particles generated from various
combustion sources.
The prototype smoke detector combines optical scattering measurements with
ionization chamber measurements in order to reduce/eliminate nuisance alarms due to the presence of
airborne dusts or diesel exhaust particles. The commercially available smoke detector is designed for
use in harsh environments where airborne dust represents a major problem due to both nuisance
alarms and detector contamination. In the experiments, the responses of the two detectors were
measured when exposed to smoke particles from the exhaust of a diesel engine and from a variety of fire
sources, including wood, coal, styrene butadiene rubber, and No. 2 diesel fuel. For the solid fuels, data
were obtained for both smoldering and flaming combustions. This report describes the experiments,
their results, and the use of these results as they apply to early-warning fire sensors capable of the rapid
and reliable detection of fires in atmospheres that may or may not be contaminated by either airborne
dust or the products produced from diesel engines.
Laboratory experiments were conducted to determine the responses of a prototype smoke detector anda commercially available photoelectric smoke detector to smoke particles generated from variouscombustion sources. The prototype smoke detector combines optical scattering measurements withionization chamber measurements in order to reduce/eliminate nuisance alarms due to the presence ofairborne dusts or diesel exhaust particles. The commercially available smoke detector is designed foruse in harsh environments where airborne dust represents a major problem due to both nuisancealarms and detector contamination. In the experiments, the responses of the two detectors weremeasured when exposed to smoke particles from the exhaust of a diesel engine and from a variety of firesources, including wood, coal, styrene butadiene rubber, and No. 2 diesel fuel. For the solid fuels, datawere obtained for both smoldering and flaming combustions. This report describes the experiments,their results, and the use of these results as they apply to early-warning fire sensors capable of the rapidand reliable detection of fires in atmospheres that may or may not be contaminated by either airbornedust or the products produced from diesel engines.
การแปล กรุณารอสักครู่..
