FGBU VNIIPO EMERCOM of Russia

scientific-technical journal

Pozharnaya bezopasnost’/FIRE SAFETY

ISSN 2411-3778   eISSN 2782-3199

2022-3_Pages_63-69

https://doi.org/10.37657/vniipo.pb.2022.90.12.007

 

FIRE AND EXPLOSION HAZARD OF REFRIGERANT R-365MFC AND FIREPROOF MIXTURES BASED ON IT

 

Ilya P. Eltyshev1

 

1State Fire Academy of Emercom of Russia, Moscow, Russia

 

Abstract. In connection with the adoption of a number of international environmental agreements the production of refrigerants which are greenhouse gases should be significantly reduced. This will lead to a shortage of refrigerants used in refrigeration and climate technology, as well as in other industries. A possible way to solve the problem of using greenhouse gases is to create mixed compositions with reduced content of the greenhouse component. At the same time the hazard class of the R-365mfc refrigerant is unknown. In this paper this refrigerant will be investigated and its hazard class will be determined. To solve the problem of using greenhouse gases the paper proposes the creation of non-combustible compositions with a flammable refrigerant R-365mfc with combustion inhibitor C6F12 and C6F12O which are short-lived substances in the atmosphere. There were carried out the studies aimed at determining the hazard class and creating non-combustible compositions on the experimental installation “Variant” at atmospheric pressure.

It is expected that when added to R-365mfc a heavy inhibitor with a high heat capacity will cause a strong inhibitory effect on the combustion process, it will also be important if this inhibitor is able to chemically inhibit the combustion process through interaction with the active sites responsible for its occurrence.

It was ascertained that R-365mfc belongs to the A2L hazard class, and the non-combustible mixed composition based on R-365mfc is 54.2 % wt. R-365mfc – 42.8 % wt. C6F12(a). The possibility of reducing the proportion of the greenhouse component in the mixed composition of the refrigerant by 45.8 % by weight is shown. The efficiency of combustion inhibition is determined by the characteristics of the thermal degradation of inhibitors in the flame.

 

Keywords: fire, fire safety, refrigerants, refrigerant R-365mfc, fireproof mixtures, inhibitors

 

Acknowledgments: The work was carried out with the support of the Innovation Assistance Fund under the program “UMNIK” under contract No. 17482GU/2022 dated April 26, 2022. The author also expresses sincere gratitude to Doctor of Engineering Sergey Nikolaevich Kopylov and to Doctor of Engineering, Prof. Ildar Rafatovich Begishev for valuable advice and suggestions received during the discussion of the results of this work, Candidate of Engineering. Nikolay Vitalievich Golov for assistance in organizing and conducting experiments.

 

For citation: Eltyshev I.P. Fire and explosion hazard of refrigerant R-365mfc and fireproof mixtures based on it. Pozharnaya Bezopasnost‘ – Fire Safety, 2022, no. 3 (108), pp. 63–69. (In Russ.). https://doi.org/10.37657/vniipo.pb.2022.90.12.007.

  

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Information about the author

 I.P. Eltyshev – post-graduate student, ilin-007@mail.ru.

 

The article was submitted 20.05.2022; approved after reviewing 10.06.2022; accepted for publication 01.08.2022.

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