Abstract The effectiveness of sprinklers in protecting a patient in a hospital room fire was investigated by performing 26 sprinklered and four free-burn experiments in real hospital rooms equipped with water-based automatic suppression system. Three different fire loads were used: UL 1626 corner test fire and two different textile fires. The measurements included temperatures, pipe pressure, and concentrations of about 20 different gas compounds. Based on the measurement results, we calculated the Fractional Effective Dose (FED) and Fractional Irritant Concentration (FIC) –values, and estimated the likelihood of incapacitation as a function of time. The results showed that sprinklers maintained temperatures at low level and reduced toxicity, mainly through fire development control. In UL1626 and large textile fires, sprinklers decreased the patient's incapacitation probability from 0.9 or above to the level of 0.4. In small textile fires, the difference between the incapacitation probabilities of sprinklered fires and free-burns was less than the measurement uncertainty. FED results were sensitive to the calculation method due to the different treatment of NOx –gases.

中文翻译：

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洒水喷头对病房火灾患者生存概率的影响

摘要 通过在配备有水基自动灭火系统的真实病房中进行了 26 次喷洒和 4 次自由燃烧实验，研究了洒水喷头在医院房间火灾中保护患者的有效性。使用了三种不同的火灾载荷：UL 1626 角测试火灾和两种不同的纺织品火灾。测量包括温度、管道压力和大约 20 种不同气体化合物的浓度。根据测量结果，我们计算了部分有效剂量 (FED) 和部分刺激物浓度 (FIC) 值，并估计了作为时间函数的失能可能性。结果表明，洒水喷头将温度保持在较低水平并降低毒性，主要是通过控制火势发展。在 UL1626 和大型纺织品火灾中，洒水器将患者的失能概率从 0.9 或以上降低到 0.4 的水平。在小型纺织品火灾中，喷洒火灾和自由燃烧的失能概率之间的差异小于测量不确定度。由于对 NOx 气体的不同处理，FED 结果对计算方法很敏感。