基于全尺寸火灾试验的家用喷头灭火性能研究

摘要

In order to study the fire control performance of residential sprinkler and the influence on environment after the activation of sprinklers, the necessity of setting sprinkler systems in the residence was introduced, and the comparative test on fire control performance of different types of residential sprinklers and standard sprinklers was conducted under the same water supply density.The results showed that both the residential sprinklers and the standard sprinklers could control the fire well, but the activated time of the pendent sprinkler was earlier than that of the sidewall sprinkler.In the aspect of environment condition variation, the concentration of CO was reduced a-bout 59 percent and the concentration of O2 was increased about 0 .6 percent when using the residential sprinklers comparing with the standard sprinklers, The better evacuation environment can be provided when using the residen-tial sprinklers.%为研究家用喷头的灭火性能和喷头动作后对室内环境的影响，分析了住宅设置自动喷水灭火系统的必要性，并以沙发作为点火源，在相同的喷水强度下开展了不同类型家用喷头和标准喷头的灭火性能对比试验。试验结果表明，采用家用喷头和标准喷头均能有效控火，但下垂型喷头的动作时间要早于边墙型喷头。在室内环境条件变化方面，采用家用喷头时较标准喷头在CO浓度方面减少较为明显，约减少59％；在O2浓度变化方面较采用标准喷头提高了0.6％，采用家用喷头较标准喷头能为人员疏散提供更好的环境。