Surface Temperature Measurements on Burning Wood Specimens in the Cone Calorimeter and the Effect of Grain Orientation.
Surface Temperature Measurements on Burning Wood
Specimens in the Cone Calorimeter and the Effect of
Urbas, J.; Parker, W. J.
Fire and Materials, Vol. 17, No. 5, 205-208,
wood; surface temperature; combustion; cone
calorimeters; thermocouples; pyrometers; temperature
Surface temperatures were measured on dry Douglas fir
sapwood specimens during Cone Calorimeter tests using
thermocouples and an infra-red pyrometer. Good
agreement between the thermocouples and the pyrometer
was obtained when (1) the emissivity was assumed to be
1.0 and (2) the thermocouples were in good contact with
the surface and were not located in the proximity of a
fissure. The major fissures were normal to the grain of
the wood and the volatiles vented through the fissures.
Char oxidation in the region between the vertical
fissures resulted in higher surface temperatures.