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Effective thermal inertia in relation to normalized heat load
Author(s) -
WilliamsLeir G.
Publication year - 1984
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.810080205
Subject(s) - thermal inertia , inertia , heat load , brick , work (physics) , fire resistance , thermal , thermal resistance , structural engineering , materials science , heat resistance , environmental science , thermal mass , mechanics , engineering , composite material , mechanical engineering , thermodynamics , physics , classical mechanics
Normalized heart load, obtained by dividing heat absorption by thermal inertia, is a quantity useful in building design for relating fire severity in fully developed compartment fires to fire severity in standard fire resistance tests. Harmathy has shown how normalized heat load may be used for determining required fire resistance in projected buildings. The present work describes how effective values of thermal inertia can be calculated for such important materials as brick and concrete, both normal and lightweight, for which thermal properties depend strongly upon temperature.