- Author
-
Ostman, B. A. L.
|
Svensson, I. G.
|
Blomqvist, J.
- Title
- Comparison of Three Test Methods for Measuring Rate of Heat Release.
- Coporate
- Swedish Institute for Wood Technology Research, Stockholm, Sweden
Securitas Teknik AB, Stockholm, Sweden
- Journal
-
Fire and Materials,
Vol. 9,
No. 4,
176-184,
December 1985
- Keywords
-
heat release rate
|
oxygen consumption
- Abstract
- Three test methods for measuring the rate of heat release, RHR, have been compared on the same building materials. The test methods are the OSU-box modified for O(2)-consumption, the STFI open arrangement and the NBS cone calorimeter. All methods are based on the oxygen-consumption technique. Radiation intensities up to 50 k Wm (-2) have been applied. Thirteen different materials were tested. The results obtained using the three methods seem to be quite similar in spite of the different equipment used. The minor deviations observed in the results seem to be systemtic and may be due to the different testing arrangements. There is a good correlation between results, e.g. total heat release up to 1 min. after ignition, obtained by the different methods. Additional information about the time to ignition is obtained simultaneously. Heat-release rates in the vertical and horizontal orientations are also compared in the NBS cone calorimeter.