Abstract Facade systems play an important role in fire compartmentation of a building and reducing the likelihood of fire spreading through and outside of the building walls. The use of sprinklers in building regulations often allows for smaller building separation. However, no additional benefits are usually given to additional internal sprinkler protection of the external glass facade using standard pendant sprinklers. Four compartment fire experiments were performed with non-fire-rated aluminium facades with two- and three-layered Insulating Glass Units (IGU), protected by pendant-type sprinklers (DN15, K-factor = 80, T = 68 °C). Sprinklers were in row 14–55 cm from the glazing, with 1.514–1.83 m separation distance. In all experiments, facades achieved satisfactory performance in terms of glazing integrity, insulation and reducing the thermal radiation. Under a non-uniform water distribution, parts of the glass were dry (1.7%–15.7% of IGU area), where we have observed soot deposition and local damage to fire exposed glass layer, but no loss of the structural integrity. The temperatures on the unexposed side did not exceed 86 °C, the peak measured temperature of the internal glass surface was 173 °C. The performed experiments confirmed the capability of standard pendant-type sprinklers to enhance the fire protection features of a building facade.

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悬垂式洒水喷头玻璃幕墙防火性能试验研究

摘要 外墙系统在建筑物的防火分区和减少火灾通过建筑物墙壁和外部蔓延的可能性方面发挥着重要作用。在建筑法规中使用洒水器通常允许更小的建筑分隔。然而，使用标准悬垂式洒水喷头对外部玻璃幕墙进行额外的内部洒水喷头保护通常不会带来额外的好处。对带有两层和三层中空玻璃单元 (IGU) 的非防火铝制外墙进行了四个隔间火灾实验，由悬垂式喷头保护 (DN15，K 系数 = 80，T = 68 °C)。洒水器排成一排，距玻璃窗 14-55 厘米，间隔 1.514-1.83 米。在所有实验中，外墙在玻璃完整性方面取得了令人满意的表现，隔热和减少热辐射。在不均匀的水分布下，部分玻璃是干燥的（IGU 面积的 1.7%–15.7%），我们观察到烟灰沉积和火灾暴露的玻璃层的局部损坏，但没有损失结构完整性。未曝光侧的温度不超过86°C，玻璃内表面的峰值测量温度为173°C。所进行的实验证实了标准悬垂式洒水器能够增强建筑立面的防火功能。内部玻璃表面的峰值测量温度为 173 °C。所进行的实验证实了标准悬垂式洒水器能够增强建筑立面的防火功能。内部玻璃表面的峰值测量温度为 173 °C。所进行的实验证实了标准悬垂式洒水器能够增强建筑立面的防火功能。