Determining the fire extinguishing efficiency of compressed air foam with modified additive NH4H2PO4

Authors

DOI:

https://doi.org/10.15587/1729-4061.2025.345244

Keywords:

compressed air foam, modified additives, fire-extinguishing properties, class A fires, water

Abstract

This study examines the fire extinguishing efficiency of aqueous fire extinguishing agents such as compressed air foam with a modified NH4H2PO4 additive, compressed air foam of standard composition, water, and gel-forming composition.

The principal hypothesis assumes that compressed air foam with a modified NH4H2PO4 additive has more effective fire extinguishing properties when extinguishing class A fires in comparison with compressed air foam of standard composition, water, and gel-forming compositions.

The task addressed was predetermined by the lack of scientifically substantiated comparative data on the fire extinguishing efficiency of aqueous fire extinguishing agents when extinguishing standardized model fires of class 1A: compressed air foam with a modified NH4H2PO4 additive, compressed air foam of standard composition, water, and gel-forming composition.

When using all of the above fire extinguishing agents, successful elimination of combustion was observed. However, the lowest time and mass spent on extinguishing were established precisely for CAF with MA NH4H2PO4. The mass spent on extinguishing the fire by the CAF with NH4H2PO4 is 7% less than the mass of the CAF of standard composition and 52% less than the mass of water. For compressed air foam with MA NH4H2PO4, the extinguishing time was recorded to be 10% less than the time required to extinguish the fire by the CAF of standard composition and 51% less than the time of extinguishing with water.

The extinguishing efficiency indicators of the CAF with MA NH4H2PO4, CAF of standard composition, GFC, and water were compared with each other. As a result, the indicator for CAF with MA NH4H2PO4 is Іе.e = 16.5 m2/kg∙s; for CAF of standard composition, Іе.e = 14.03 m2/kg∙s; for GFC, Іе.e = 11.9 m2/kg∙s; for water, Іе.e = 3.94 m2/kg∙s.

The results emphasize that the use of MA in the composition of CAF, in particular NH4H2PO4, increases its fire-extinguishing properties when extinguishing class A fires. It has been proven that the fire-extinguishing efficiency of CAF with MA content is 15% higher compared to CAF of standard composition. Compared to GFC, the efficiency is 28% higher; compared to water, 77% higher.

Author Biographies

Stanislav Shakhov, National University of Civil Protection of Ukraine

Doctor of Philosophy (PhD), Associate Professor

Department of Engineering and Rescue Machinery

Stanislav Vynohradov, National University of Civil Protection of Ukraine

PhD, Associate Professor

Department of Engineering and Rescue Machinery

Dmytry Hryschenko, National University of Civil Protection of Ukraine

Department of Engineering and Rescue Machinery

Andrii Melnychenko, National University of Civil Protection of Ukraine

Doctor of Philosophy (PhD), Associate Professor

Department of Organization and Conduct of Emergency Rescue Operations

Evgen Grinchenko, Kharkiv National University of Internal Affairs

PhD, Associate Professor

Research Laboratory on the Problems of Information Technologies and Combating Crime in Cyberspace

Liudmyla Knaub, Military Academy (Odesa)

Doctor of Technical Sciences, Professor

Department of Engineering Mechanics

Nataliia Maslich, Military Academy (Odesa)

PhD, Associate Professor

Department of Engineering Mechanics

Tetiana Mohylianets, Military Academy (Odesa)

PhD

Department of Engineering Mechanics

Volodymyr Pinder, Lviv State University of Life Safety

PhD, Associate Professor

Department of Vehicle Operation and Fire-Rescue Techniques

Yuriy Pavlyuk, Lviv State University of Life Safety

PhD, Associate Professor

Department of Operation of Vehicles and Fire and Rescue Equipment

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Determining the fire extinguishing efficiency of compressed air foam with modified additive NH4H2PO4

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Published

2025-12-31

How to Cite

Shakhov, S., Vynohradov, S., Hryschenko, D., Melnychenko, A., Grinchenko, E., Knaub, L., Maslich, N., Mohylianets, T., Pinder, V., & Pavlyuk, Y. (2025). Determining the fire extinguishing efficiency of compressed air foam with modified additive NH4H2PO4. Eastern-European Journal of Enterprise Technologies, 6(10 (138), 32–38. https://doi.org/10.15587/1729-4061.2025.345244

Issue

Vol. 6 No. 10 (138) (2025): Ecology

Section

Ecology

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Copyright (c) 2025 Stanislav Shakhov, Stanislav Vynohradov, Dmytry Hryschenko, Andrii Melnychenko, Evgen Grinchenko, Liudmyla Knaub, Nataliia Maslich, Tetiana Mohylianets, Volodymyr Pinder, Yuriy Pavlyuk

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