I. Babashov, I. Dadashov, O. Kireev, О. Savchenk, M. Musayev. Study of the insulating properties of the two-layer system based on fluid light materials. Р. 4-14.

 

Study of the insulating properties of the two-layer system based on fluid light materials

 

Ilham Balasalim Babashov

Academy of the Ministry of Emergency Situations of the Republic of Azerbaijan

https://orcid.org/0000-0002-3294-1767

 

Ilgar Firdosi Dadashov

Academy of the Ministry of Emergency Situations of the Republic of Azerbaijan

https://orcid.org/0000-0002-1533-1094

 

Oleksandr Kireev

National University of Civil Defenсe of Ukraine

https://orcid.org/0000-0002-8819-3999

 

Alexander Savchenko

National University of Civil Defenсe of Ukraine

https://orcid.org/0000-0002-1305-70415

 

Magomed Yelchyn Musaev

Azerbaijan University of Architecture and Construction

https://orcid.org/0000-0002-8553-2617

 

DOI: https://doi.org/10.52363/2524-0226-2022-36-1

Keywords: extinguishing polar flammable liquids, ethanol, loose materials, insulating properties

 

Аnnotation

Experimental studies of the previously proposed method of extinguishing polar liquids with the help of fire extinguishing agents based on light loose porous materials have been continued. It is shown that the most important component of the fire-extinguishing action of such agents is their insulating properties. To reduce the rate of evaporation of highly flammable polar liquids, it is proposed to use binary layers of light free-flowing porous materials. The lower layer provides high buoyancy of the entire fire extinguishing system, and the upper layer has increased insulating properties. Crushed foam glass was chosen as the material of the bottom layer, which provides buoyancy. Swollen perlite and vermiculite, as well as crushed foam glass with granule sizes of 0,5–1 cm and 1–1,5 cm and granular zeolites and silica gel were chosen as the materials of the upper layer. Ethanol was chosen as a widely distributed polar liquid. An experimental technique for determining the insulating properties of a two-layer fire extinguishing system based on loose, lightweight materials has been developed, which allows simultaneous determination of the adsorption of ethanol vapors. Based on the gravimetric measurements, it was established that the insulating properties are increased to the greatest degree by crushed foam glass with a granule size of 0,5–1 cm, expanded perlite and vermiculite with a plate size of 0,2–0,5 cm. It was concluded that for further study of fire extinguishing properties of a two-layer fire extinguishing system intended for extinguishing flammable polar liquids, as a material that provides buoyancy, it is advisable to choose foam glass with a granule size of (1,0–1,5) cm. As a material of the upper layer, it is advisable to try crushed foam glass with a granule size of 0,5–1 cm, expanded perlite, as well as expanded vermiculite with a plate size of 0,2–0,5 cm. Also, for further studies of the fire-extinguishing characteristics of the proposed systems, it is advisable to apply a thin layer of combustion process inhibitors to the selected light loose materials.

 

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