Zhou YP, Yang LZ, Dai JK, Wang YF, Deng ZH (2009) Attenuation of Incident Heat Flux by Pyrolysis Volatiles when Heated Using Resistance Element Radiant Heater. Journal of Fire Sciences 27(5), 447-464. [In English]

Web link: http://dx.doi.org/10.1177/0734904109104818

Keywords:

radiation attenuation; incident heat flux; pyrolysis volatiles; resistance element radiant heater; ignition model; radiative ignition; solid fuels; wood; model; surface

Abstract: The attenuation of an incident radiant heat flux by pyrolysis volatiles when heated under a resistance element radiant heater, a phenomenon that is not well understood, is studied by simulated experiment and mathematical models. The radiation attenuation of an incident heat flux when pine or PMMA is heated (6-14%) obviously commences before ignition, although it is not as large as the result reported by Kashiwagi (50-80%) using a laser radiant heater. The calculated results clearly indicate that ignition models must consider radiation attenuation by pyrolysis volatiles.