Fire and smoke control in transport tunnels

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AuthorSearch for:
EditorSearch for: Klote, John H.
TypeBook Chapter
Book titleHandbook of Smoke Control Engineering
Pages129; # of pages: 29
Subjectroad tunnels; bridges; fire; ventilation; tenability; numerical modeling; tests; standards
AbstractReflective insulations are being used in attics, flat roof and wall systems. Numerical modelling and experimental investigations were conducted to assess the thermal performance of assemblies with reflective insulations. In this paper, the present model was used to verify the use of the ASTM C-518 test method for measuring the effective thermal resistances (R-values) of sample stacks comprising reflective insulations. Two tests were conducted on sample stacks using heat flow meter apparatus. The sample stack consists of two EPS layers and a reflective insulation installed in between. The model predictions agreed with measured heat fluxes within ±1%. The paper also discusses the combined effect of heat transfer by convection and radiation in the airspace facing the reflective insulation, showing that the derived R-value from the test data resulted in underestimation of the effective R-value of the sample stack.
Publication date
AffiliationConstruction; National Research Council Canada
Peer reviewedNo
NRC number55311
NPARC number21242583
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Record identifiere5addb99-a2fd-4471-927d-6be236939e22
Record created2013-02-18
Record modified2016-05-09
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