An Experimental Study of the Effect of Thermal Radiation Feedback on the Room-Burning Behaviour of Horizontal Slabs of Polyurethane Foam

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TypeTechnical Report
Series titleResearch Report (National Research Council Canada. Institute for Research in Construction); no. RR-309
Physical description21 p.
SubjectPolyurethane foam, heat release rate, radiation feedback, fire experiments; Fire
AbstractThis report presents the results of three fire experiments (one free-burn and two room tests) that were carried out to investigate the influence of thermal radiation feedback on the rate of surface flame spread and heat release rate (HRR) for a horizontal block of furniture-grade non-fire-retarded polyurethane foam measuring 1200 x 600 x 200 mm and weighing approximately 4.8 kg. The room tests were conducted in a small compartment measuring 2400 mm wide x 2800 mm deep x 2400 mm high with a rectangular vent (opening under a calorimeter hood) measuring 740 mm wide x 1500 mm high (a ventilation limit of approximately 2000 kW) located in one of the 2400 mm walls. The room was lined with one of two different non-combustible materials ? 12.7 mm thick cement board or 50 mm thick mineral wool insulation ? with substantially differential thermal inertias in order to subject the test specimen to one of two thermal environments. Measurements were taken to quantify the temporal variation of heat release rates (HRRs), smoke density, radiant heat flux, temperatures and the concentration of O2, CO2 and CO in the test room. The tests were also recorded using an infrared camera in order to determine the surface rate of flame spread.
Publication date
PublisherNational Research Council Canada
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC numberNRC-IRC-21457
NPARC number20374371
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Record identifier04a7eba1-dafb-4376-8ce5-ac6c3c5d3cb4
Record created2012-07-23
Record modified2017-06-15
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