Premium
Time—temperature profile across a lumber section exposed to pyrolytic temperatures
Author(s) -
Shrestha D.,
Cramer S.,
White R.
Publication year - 1994
Publication title -
fire and materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.482
H-Index - 58
eISSN - 1099-1018
pISSN - 0308-0501
DOI - 10.1002/fam.810180404
Subject(s) - pyrolytic carbon , pyrolysis , evaporation , section (typography) , thermal conduction , cross section (physics) , moisture , materials science , temperature measurement , environmental science , composite material , structural engineering , forensic engineering , engineering , thermodynamics , waste management , computer science , physics , quantum mechanics , operating system
Abstract This paper presents a closed‐form solution with empirical adjustments to predict the time–temperature profile across a lumber section when the exposure history of its surface is known. The formulation is based on the two‐dimensional heat‐conduction equation that includes the effects of moisture evaporation and pyrolysis of wood. The kinetic constants and adjustment factors needed in the model were estimated from the temperature profile test data of dimension lumber and other published sources. This technique offers a simple practical means to estimate the internal temperatures of structural lumber exposed to high temperatures, and has been effectively implemented in the analyses of protected wood assemblies exposed to fire situations.