New Heater and Flux Gauge for the NBS Smoke Box.
New Heater and Flux Gauge for the NBS Smoke Box.
(572 K)
Smith, R. L.
NISTIR 4917; 30 p. September 1992.
Sponsor:
Federal Aviation Administration, Atlantic City Airport,
NJ
Available from:
National Technical Information Service
Order number: PB93-11367
Keywords:
smoke chamber test; smoke measurement
Abstract:
Improvements of the heater and the heat flux detector
used in the FAA's Smoke Chamber test protocol are
described. Heater designs were evaluated and two heaters
were obtained and evaluated. This report covers various
aspects of analysis and gives details on the heater that
may provide a more uniform radiation field on the target
specimen. The use of a smaller gauge, similar to the
one used in the OSU calorimeter, in the smoke box for
measuring the heat flux is discussed. Finally, a method
that allows one to use the measurement of the radiation
field at the center of the target specimen to infer the
average radiation field over the specimen is presented.
Building and Fire Research Laboratory
National Institute of Standards and Technology
Gaithersburg, MD 20899