Experimental Study on the Burning Characteristics of Wood Cribs in a Confined Space

A series of experiments were conducted to study the burning characteristics of wood cribs in a confined space. The results show that burning conditions of wood cribs in a confined space fall into two regimes: the smaller porosity factor burning regime and the larger porosity factor burning regime. The scaled steady mass loss rates of wood cribs burning in the larger porosity factor regime linearly increases with the increase of the porosity factor in a confined space. The concentrations of CO, CO ₂ and O ₂ in combustion products, the flame temperature and the mass loss rate exhibit different time-variations or relationships with the porosity factor for wood cribs burning in these two different regimes.