Determining the dynamic characteristics of a class B fire in the case of extinguishing by water spray

Authors

DOI:

https://doi.org/10.15587/1729-4061.2023.292767

Keywords:

class B fire, sprayed water, dynamic characteristics, characteristics parameters

Abstract

The object of this study is a class B fire, which is extinguished with sprayed water. The subject of the study is the characteristics of class B fires when they are extinguished with sprayed water. Diffusion burning of a flammable liquid is considered as such a fire, and its extinguishing is carried out by cooling the flame. Heat and oxygen balance equations are used to build a mathematical model describing the fire extinguishing process. The components of the heat balance equation are the power of heat during heat release due to the chemical reaction of liquid combustion and the power of heat dissipated to the environment. The second component takes into account heat removal due to radiation, convection, and evaporation. The component of removed heat due to evaporation takes into account the Sreznevsky constant. The mathematical model that describes the process of extinguishing a class B fire is built in the class of models belonging to differential equations with constant coefficients. Analytical expressions were obtained for these static and dynamic coefficients, which include thermophysical, kinematic, and geometric parameters of the flame and fire extinguishing agent. To determine these characteristics, the constructed mathematical fire model was transformed using the integral Laplace transform. The dynamic characteristics of the fire were obtained in the time domain – the transient function of the fire, and in the frequency domain – the amplitude-frequency and phase-frequency characteristics of the fire. It is shown that the parameters of these dynamic characteristics should be determined experimentally. Experimental methods for determining parameters of dynamic fire characteristics have been devised. The presence of dynamic characteristics of class B fire makes it possible to spread the proven methods of the theory of control systems to design effective fire extinguishing systems

Author Biographies

Valerii Kolomiiets, National University of Civil Defence of Ukraine

Lecturer

Department of Logistics and Technical Support of Rescue Operations

Yuriy Abramov, National University of Civil Defence of Ukraine

Doctor of Technical Sciences, Professor, Chief Researcher

Research Center

Oleksii Basmanov, National University of Civil Defence of Ukraine

Doctor of Technical Sciences, Professor, Chief Researcher

Scientific Department on Problems of Civil Defenсe, Technogenic and Ecological Safety

Vitaliy Sobyna, National University of Civil Defence of Ukraine

PhD, Associate Professor, Head of Department

Department of Logistics and Technical Support of Rescue Operations

Dmitry Sokolov, National University of Civil Defence of Ukraine

PhD, Associate Professor

Department of Logistics and Technical Support of Rescue Operations

References

  1. Wang, X., Tan, Q., Wang, Z., Kong, X., Cong, H. (2018). Preliminary study on fire protection of window glass by water mist curtain. International Journal of Thermal Sciences, 125, 44–51. doi: https://doi.org/10.1016/j.ijthermalsci.2017.11.013
  2. Abramov, Yu. O., Basmanov, O. Ye., Krivtsova, V. I., Salamov, J. (2019). Modeling of spilling and extinguishing of burning fuel on horizontal surface. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, 4, 86–90. doi: https://doi.org/10.29202/nvngu/2019-4/16
  3. Paris Firefighters Used This Remote-Controlled Robot to Extinguish the Notre Dame Blaze. Available at: https://spectrum.ieee.org/colossus-the-firefighting-robot-that-helped-save-notre-dame
  4. Firefighter Drones – How Drones are Being Used for Helping Fire Departments. Available at: https://dronenodes.com/firefighter-drones/
  5. Villani, V., Czerniak, J. N., Sabattini, L., Mertens, A., Fantuzzi, C. (2019). Measurement and classification of human characteristics and capabilities during interaction tasks. Paladyn, Journal of Behavioral Robotics, 10 (1), 182–192. doi: https://doi.org/10.1515/pjbr-2019-0016
  6. Shrigondekar, H., Chowdhury, A., Prabhu, S. V. (2021). Performance by Various Water Mist Nozzles in Extinguishing Liquid Pool Fires. Fire Technology, 57 (5), 2553–2581. doi: https://doi.org/10.1007/s10694-021-01130-0
  7. Shrigondekar, H., Chowdhury, A., Prabhu, S. V. (2020). Characterization of solid-cone simplex mist nozzles. Fire Safety Journal, 111, 102936. doi: https://doi.org/10.1016/j.firesaf.2019.102936
  8. Jeong, C. S., Lee, C. Y. (2021). Experimental investigation on spray characteristics of twin-fluid nozzle for water mist and its heptane pool fire extinguishing performance. Process Safety and Environmental Protection, 148, 724–736. doi: https://doi.org/10.1016/j.psep.2021.01.037
  9. Liu, T., Yin, X.-Y., Liu, Y.-C., Tang, Y., Huang, A.-C., Dong, X.-L., Liu, Y.-J. (2022). Influence of Water Mist Temperature Approach on Fire Extinguishing Effect of Different Pool Fires. Processes, 10 (8), 1549. doi: https://doi.org/10.3390/pr10081549
  10. Wang, J., He, Y., Tao, B. (2021). Inhibition effect of water mist with single and double nozzles on n-heptane pool fire. Fire Science and Technology, 40 (5), 696–700. Available at: https://www.xfkj.com.cn/EN/Y2021/V40/I5/696
  11. Liu, Y., Fu, Z., Zheng, G., Chen, P. (2022). Study on the effect of mist flux on water mist fire extinguishing. Fire Safety Journal, 130, 103601. doi: https://doi.org/10.1016/j.firesaf.2022.103601
  12. Liu, Y., Chen, P., Fu, Z., Li, J., Sun, R., Zhai, X. (2023). The investigation of the water mist suppression pool fire process’s flame expansion characteristics. Journal of Loss Prevention in the Process Industries, 81, 104927. doi: https://doi.org/10.1016/j.jlp.2022.104927
  13. Lv, D., Tan, W., Zhu, G., Liu, L. (2019). Gasoline fire extinguishing by 0.7 MPa water mist with multicomponent additives driven by CO2. Process Safety and Environmental Protection, 129, 168–175. doi: https://doi.org/10.1016/j.psep.2019.07.002
  14. Sun, X., Huang, H., Zhao, J., Song, G. (2022). Experimental Study of the Effect of Slope on the Spread and Burning Characteristics of a Continuous Oil Spill Fire. Fire, 5 (4), 112. doi: https://doi.org/10.3390/fire5040112
  15. Ditch, B. D., de Ris, J. L., Blanchat, T. K., Chaos, M., Bill, R. G., Dorofeev, S. B. (2013). Pool fires – An empirical correlation. Combustion and Flame, 160 (12), 2964–2974. doi: https://doi.org/10.1016/j.combustflame.2013.06.020
  16. Dasgotra, A., Rangarajan, G., Tauseef, S. M. (2021). CFD-based study and analysis on the effectiveness of water mist in interacting pool fire suppression. Process Safety and Environmental Protection, 152, 614–629. doi: https://doi.org/10.1016/j.psep.2021.06.033
  17. Yao, Y., Li, Y. Z., Ingason, H., Cheng, X., Zhang, H. (2021). Theoretical and numerical study on influence of wind on mass loss rates of heptane pool fires at different scales. Fire Safety Journal, 120, 103048. doi: https://doi.org/10.1016/j.firesaf.2020.103048
  18. Dombrovsky, L. A., Dembele, S., Wen, J. X. (2018). An infrared scattering by evaporating droplets at the initial stage of a pool fire suppression by water sprays. Infrared Physics & Technology, 91, 55–62. doi: https://doi.org/10.1016/j.infrared.2018.03.027
  19. Abramov, Y., Kolomiiets, V., Sobyna, V. (2023). Models of fire extinguishing when flammable liquid combustion. Series: Engineering Science and Architecture, 4 (178), 194–198. doi: https://doi.org/10.33042/2522-1809-2023-4-178-194-198
Determining the dynamic characteristics of a class B fire in the case of extinguishing by water spray

Downloads

Published

2023-12-22

How to Cite

Kolomiiets, V., Abramov, Y., Basmanov, O., Sobyna, V., & Sokolov, D. (2023). Determining the dynamic characteristics of a class B fire in the case of extinguishing by water spray. Eastern-European Journal of Enterprise Technologies, 6(10 (126), 50–57. https://doi.org/10.15587/1729-4061.2023.292767

Issue

Vol. 6 No. 10 (126) (2023): Ecology

Section

Ecology

License

Copyright (c) 2023 Valerii Kolomiiets, Yuriy Abramov, Oleksii Basmanov, Vitaliy Sobyna, Dmitry Sokolov

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

The consolidation and conditions for the transfer of copyright (identification of authorship) is carried out in the License Agreement. In particular, the authors reserve the right to the authorship of their manuscript and transfer the first publication of this work to the journal under the terms of the Creative Commons CC BY license. At the same time, they have the right to conclude on their own additional agreements concerning the non-exclusive distribution of the work in the form in which it was published by this journal, but provided that the link to the first publication of the article in this journal is preserved.

A license agreement is a document in which the author warrants that he/she owns all copyright for the work (manuscript, article, etc.).
The authors, signing the License Agreement with TECHNOLOGY CENTER PC, have all rights to the further use of their work, provided that they link to our edition in which the work was published.
According to the terms of the License Agreement, the Publisher TECHNOLOGY CENTER PC does not take away your copyrights and receives permission from the authors to use and dissemination of the publication through the world's scientific resources (own electronic resources, scientometric databases, repositories, libraries, etc.).
In the absence of a signed License Agreement or in the absence of this agreement of identifiers allowing to identify the identity of the author, the editors have no right to work with the manuscript.
It is important to remember that there is another type of agreement between authors and publishers – when copyright is transferred from the authors to the publisher. In this case, the authors lose ownership of their work and may not use it in any way.