Experiments have been carried out in a specially designed 36 m² compartment. The experimental results show the main phenomena during the fire and smoke propagation in the compartment before sprinkler activation and additionally the interaction between the hot flue gases in the smoke layer and the water spray. The axial temperature profiles at three characteristic positions inside the compartment were measured. A comparison of a standard sprinkler and a High-Pressure Water Mist system (HPWM) revealed two different phenomena, which are flue gas scrubbing and recirculation motion, respectively – both eventually leading to an increased smoke obscuration inside the compartment.

中文翻译：

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喷淋头激活对36 m ²围墙内分层烟层影响的实验研究

实验是在专门设计的36 m ²隔室中进行的。实验结果表明，在喷头启动前，火灾和烟气在车厢内蔓延的主要现象以及烟层中热烟气与喷水之间的相互作用。测量了隔室内三个特征位置的轴向温度分布。将标准喷淋头和高压水雾系统（HPWM）进行比较后，发现了两种不同的现象，分别是烟道气洗涤和再循环运动–两者最终都导致车厢内的烟雾弥散性增加。