INCREASING EXTINGUISHING EFFECT OF WATER MIST BY ELEKTRIFICATION

Authors

  • Otto Dvořák University Centre for Energy Efficient Buildings of Czech Technical University in Prague, s. Třinecká 1024, 273 43 Buštěhrad, Czech Republic
  • Jan Koller Faculty of Electrical Engineering of Czech Technical University in Prague, s. Technická 2, 166 27 Prague, Czech Republic

DOI:

https://doi.org/10.14311/CEJ.2017.01.0005

Keywords:

Low-, medium- and high-pressure mist, fire-fighting nozzle, DC high-voltage generator, cathode, anode, extinguishing time.

Abstract

This paper describes extinguishing experiments to verify the possibility of increasing the fire-extinguishing efficiency of low-, medium- and high-pressure water mist by its charging by the electric field of high DC voltage. The experimental results confirmed the effects of the electrical voltage, the configuration of electrodes (anode, cathode), the volumetric water flow rate, water pressure and the type of mist nozzle. Higher fire-extinguishing effect of electrically-charged water mist was shown by a shorter extinguishing time, a smaller volume of water to extinguish the fire and a higher percentage of successful extinguishing attempts. Benefit: faster and more efficient fire-fighting with a smaller risk of injury of persons and smaller subsequent damage in the protected space.

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References

NFPA 750 (USA): Standard on Water Mist Fire Protection Systems, Current Edition: 2015. Next Edition: 2019.

CEN/TS 14972 (EU) Fixed firefighting systems. Water-mist systems. Design and installation. 2011. [3] ČSN P CEN/TS 14972 (ČR) Stabilní hasicí zařízení. Mlhová zařízení. Navrhování a instalace. 2012.

FM 5560 (USA) Water Mist Systems. 2012.

ANSI/UL 2167 (USA) Standard for Safety for Water Mist Nozzles for Fire-Protection Service. 2011.

FM DS 4-2 (USA) FM Global Data Sheet. Water Mist Systems. 2006.

DD 8489 (UK) Fixed fire protection systems. Industrial and commercial water-mist systems. Code of practice for design and installation. 2011. [8] APSAD D2 (Francie) Guide pour l'installation de systèmes de protection incendie par brouillard d'eau. 2007.

Užitný vzor CZ 29 023 U1, 2015-12-28

Užitný vzor CZ 30 012 U1, 2016-11-15

zák. č. 478/1992 Sb., o užitných vzorech

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Published

2017-04-30

How to Cite

Dvořák, O., & Koller, J. (2017). INCREASING EXTINGUISHING EFFECT OF WATER MIST BY ELEKTRIFICATION. Stavební Obzor - Civil Engineering Journal, 26(1). https://doi.org/10.14311/CEJ.2017.01.0005

Issue

Vol. 26 No. 1 (2017)

Section

Articles

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