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Article

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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Institute of Safety Engineering, The Main School of Fire Service, Słowackiego Str. 52/54, 01-629 Warsaw, Poland
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Faculty of Safety Engineering and Civil Protection, The Main School of Fire Service, Słowackiego Str. 52/54, 01-629 Warsaw, Poland
3
Faculty of Process Engineering and Environmental Protection, Lodz University of Technology, Wólczańska 213, 90-001 Łódź, Poland
*
Author to whom correspondence should be addressed.
Sustainability 2020, 12(20), 8700; https://0-doi-org.brum.beds.ac.uk/10.3390/su12208700
Received: 25 July 2020 / Revised: 13 October 2020 / Accepted: 19 October 2020 / Published: 20 October 2020
(This article belongs to the Special Issue Green Technologies in Air Treatment)
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. View Full-Text
Keywords: hybrid water mist system; internal fire; fire extinguishing; water mist fire suppression system; fire environment; fixed extinguishing device; group A fire hybrid water mist system; internal fire; fire extinguishing; water mist fire suppression system; fire environment; fixed extinguishing device; group A fire
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MDPI and ACS Style

Gałaj, J.; Tuśnio, N.; Wolny, P.; Drzymała, T. 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. Sustainability 2020, 12, 8700. https://0-doi-org.brum.beds.ac.uk/10.3390/su12208700

AMA Style

Gałaj J, Tuśnio N, Wolny P, Drzymała T. 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. Sustainability. 2020; 12(20):8700. https://0-doi-org.brum.beds.ac.uk/10.3390/su12208700

Chicago/Turabian Style

Gałaj, Jerzy, Norbert Tuśnio, Paweł Wolny, and Tomasz Drzymała. 2020. "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" Sustainability 12, no. 20: 8700. https://0-doi-org.brum.beds.ac.uk/10.3390/su12208700

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