Technique for Studying of the Dynamics of Changes of a Smoky Environment Parameters during the Transition of Pyrolysis to Flame Combustion
https://doi.org/10.21122/2220-9506-2019-10-4-382-390
Abstract
The existing methods for monitoring the performance of multi-criteria fire detectors do not provide for verification of their characteristics in the conditions of transition from smoldering to flame burning. The aim of the work is the development of the research methods of the environmental parameters during the transition from smoldering (pyrolysis) to flame combustion for simulation a test fire while checking the quality of multi-criteria fire detectors.
A technique to conduct research of environmental parameters under conditions of heating wood samples of different sizes to a temperature of selfignition and burning crumpled and smooth paper has been developed.
Changes in the concentration of carbon monoxide, specific optical density, and scattering ability during the transition from smoldering (pyrolysis) to flame burning of prepared wood and crumpled paper were studied for the first time.
It is shown that the controlled environmental parameters during the transition from smoldering pyrolysis to flame burning change together. Conclusion: the speed of growth of the scattering ability of smoke decreases by 2.4 times, the speed of increase in the specific optical density and concentration of carbon monoxide increases by 2 and 5.3 times (respec-tively), during the transition from pyrolysis to flame burning of wood.
About the Authors
A. A. Antoshyn
Belarusian National Technical University
Belarus
Belarus
Address for correspondence: A.A. Antoshyn – Belarusian National Technical University, Nezavisimosty Ave., 65, Minsk 220013, Belarus e-mail: Aantoshyn@bntu.by
V. I. Nikitin
Belarusian National Technical University;
Research Institute of Fire Safety and Emergencies of the Ministry for Emergency Situations of the Republic of Belarus
Belarus
Nezavisimosty Ave., 65, Minsk 220013; Soltysa str., 183a, Minsk 220046
Belarus
Nezavisimosty Ave., 65, Minsk 220013; Soltysa str., 183a, Minsk 220046
References
1. Chlenov A.N., Butsinskaya T.A., Zhuravlev S.Yu., Nikolaev V.A. [About the efficiency of the multi-criteria fire detector]. Pozharovzryvobezopasnost' [Fire and explosion safety], 2016, vol. 25, no. 12, pp. 55–60 (in Russian). DOI: 10.18322/PVB.2016.25.12.55-60
2. Zdor V.L. [Multi-criteria fire detectors. Prospects of use]. Pozharnaya bezopasnost' [Fire safety], 2015, no 2, pp. 113–117 (in Russian).
3. Neplokhov I., Afanasyev V. [Fire detectors: XXI century]. Tekhnologii zashhity [Protection Technologies], 2017, no. 4, pp. 20−25 (in Russian).
4. NFPA 72-2013 National Fire Alarm Code 2013 Edition.
5. Zuykov I.E., Antoshin A.A., Esipovich D.L., Olefir G.I. [Measurement of air characteristics in the upper zone of a room when burning paper products]. Pribory i metody izmerenij [Devices and Methods of Measurements], 2014, no. 1(8), pp. 68–72 (in Russian). DOI: 10.21122/2220-9506-2014-0-1-122-123
6. Bakanov V. [Multi-criteria fire detectors according to Russian and European standards]. Tekhnologii zashhity [Protection Technologies], 2014, no. 3, pp. 73−77 (in Russian).
7. Scorfield S. [Multisensor – an effective solution to the problem of false alarms of fire alarm systems]. Sistemy bezopasnosti [Security Systems], 2006, no. 5, pp. 128– 132 (in Russian).
8. EN 54-7 "Fire detection and fire alarm systems Part 7: Smoke detectors – Point smoke detectors that operate using scattered light, transmitted light or ionization".
9. EN 54-31 "Fire detection and fire alarm systems Part 31: Multi-sensor fire detectors – Point detectors using a combination of smoke, carbon monoxide and optionally heat sensors".
10. Kireev A.A., Bondarenko S.N. [The study of repeated inflammation of wood treated with gelling extin-guishing agents]. Problemy pozharnoj bezopasnosti [Problems of fire safety]. Kharkov: Ural State Pedagogical University, 2009, vol. 25, pp. 65–72 (in Russian).
11. Dreisdel D. Vvedenie v dinamiku pozharov [Introduction to the dynamics of fires]. Еd. Yu.A. Koshmarov, V.E. Makarov. Moscow: Stroyizdat Publ., 1990, 424 p.
12. Investigation of fires associated with a source of low power (in the form of a smoldering tobacco product): Method. allowance. Krasnoyarsk: SEU FPS IPL according to Kk, 2014, 13 p.
13. Kozlitin A.A., Lebedeva V.V., Nepochatykh I.N. [Fire development from a low power ignition source]. Nauchnyj vestnik NII GD "Respirator" [Scientific Herald of the Research Institute of State Duma "Respirator"], 2016, no. 4, pp. 43–50 (in Russian).
14. Zuikov I.E. [Device for Modelling of Early Stages of Fire Development. Collection of Scientific Papers]. Dostizheniya fiziki nerazrushayushchego kontrolya i technicheskoy diagnostiki, ed. N.P. Migun. Minsk, Institute of Applied Physics of National Academy of Sciences of Belarus, 2011, pp. 197–202 (in Russian).
15. Zuikov I.E. [Control of smoke concentration during testing of smoke optical point detectors]. Chrezvychajnye situatsii: preduprezhdenie i likvidatsiya [Emergencies: prevention and response], 2009, no. 2(26), pp. 17–29 (in Russian).
Review
For citations:
Antoshyn A.A., Nikitin V.I. Technique for Studying of the Dynamics of Changes of a Smoky Environment Parameters during the Transition of Pyrolysis to Flame Combustion. Devices and Methods of Measurements. 2019;10(4):382-390. (In Russ.) https://doi.org/10.21122/2220-9506-2019-10-4-382-390
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