A simple correlation for monitoring the ignition propensity of wet nordic spruce wood
2019 (English)In: Fire safety journal, ISSN 0379-7112, E-ISSN 1873-7226, Vol. 107, p. 186-192Article in journal (Refereed) Published
Abstract [en]
A combination of cone heater experiments and asymptotic analysis was used to determine the moisture content of Nordic spruce with varying degree of drying. The fuel moisture content was measured by weighing the specimens before and after a drying procedure in an oven. A high-flux asymptotic solution from an integral model established that the ignition temperature from the experiments (directly linked to the intercept heat flux) was constant for both the dry and the moist wood. As a result, one simple equation was developed that can be used to determine the time to ignition for a piece of wet spruce from the time to ignition of dry wood. This simple correlation, combined with models giving the fuel moisture content of wood from humidity and temperature of air surrounding, can be used as an engineering equation for monitoring the ignition propensity of timber.
Place, publisher, year, edition, pages
Elsevier Ltd , 2019. Vol. 107, p. 186-192
Keywords [en]
Asymptotic analysis, Integral model, Mass loss cone experiments, Moisture, Piloted ignition, Spruce wood
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-39846DOI: 10.1016/j.firesaf.2018.08.001Scopus ID: 2-s2.0-85070721148OAI: oai:DiVA.org:ri-39846DiVA, id: diva2:1347224
2019-08-302019-08-302019-08-30Bibliographically approved