Modeling of Thermocouple Behavior in Room Fires.
Modeling of Thermocouple Behavior in Room Fires.
(250 K)
Blevins, L. G.
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), 17-18 pp, 1998.
Available from:
National Technical Information Service
Order number: PB99-102519
Keywords:
fire research; fire science; fire suppression; room
fires; aspirated thermocouples; temperature measurements
Abstract:
As part of a NIST effort to characterize the
uncertainties of temperature measurements in fire
environments, idealized models of bare-bead,
single-shielded aspirated, and double-shielded aspirated
thermocouples were developed and used to study the
effects of varying gas and average effective
surroundings temperatures on percent error in measured
temperature of each type of thermocouple. Steady-state,
non-linear, algebraic energy balance equations combined
with appropriate convective heat transfer correlations
were solved. Probe and bead sizes closely matched those
used in recent NIST experiments. Only one previous
study has addressed aspirated thermocouples in fires.
