NDLI: Analysis of the Impact of Water Flow Rate on the Temperature Variability in a Closed Room during the Extinguishing of A-Group Fire Using a Hybrid Water Mist Suppression System

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Analysis of the Impact of Water Flow Rate on the Temperature Variability in a Closed Room during the Extinguishing of A-Group Fire Using a Hybrid Water Mist Suppression System

Content Provider	MDPI
Author	Jerzy, Gałaj Norbert, Tuśnio Tomasz, Drzymała Wolny, Paweł
Copyright Year	2020
Description	The advantage of hybrid fire suppression systems is that they combine the advantages of both water mist and clean agent systems. Currently, this innovative technology is increasingly used in fixed firefighting systems. Available literature both in Polish and around the world describes this issue in a fragmentary way. Extinguishing system tests were carried out at the Main School of Fire Service in Warsaw. The impact of water mist flow rate on the temperature variability in a closed room during the extinguishing of group A fires using a hybrid water mist system was analyzed. Four different flow rates 0.5, 1.0, 1.5 and 3.0 dm3/min were applied. The temperature variability of selected points of a closed test chamber during extinguishing process are presented. The extinguishing efficiency, taking into account extinguishing time, average speed of temperature drop and other parameters, was estimated on the basis of proposed original criterion. The results obtained showed that water flow rate has a significant impact on temperature variability and included the determination of optimal water flow rate at which the extinguishing efficiency is the highest. The conducted research proved that the hybrid system is more effective than classic mist and gas systems when extinguishing group A fires.
Starting Page	8700
e-ISSN	20711050
DOI	10.3390/su12208700
Journal	Sustainability
Issue Number	20
Volume Number	12
Language	English
Publisher	MDPI
Publisher Date	2020-10-20
Access Restriction	Open
Subject Keyword	Sustainability Characterization and Testing of Materials Hybrid Water Mist System Internal Fire Fire Extinguishing Water Mist Fire Suppression System Fire Environment Fixed Extinguishing Device Group A Fire
Content Type	Text
Resource Type	Article

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