Scientific Journal Problems of Emergency Situations - Pospelov B., Rybka E., Samoylov M., Bezuhla Y., Yashchenko O. Experimental studies of the dynamics of dangerous factors of the environment during combustion in the premises. Р. 43-57.

The results of experimental research of dynamics of dangerous factors of air environment at fires in premises of objects are resulted. It is established that the degree of mutual (pair) correlation of fluctuations of environmental factors at zero manhole is an informative sign for early detection of fires. It is obtained that for test materials of ignition in the form of alcohol, paper and wood the pair correlation coefficient is close to unity, and for textiles - to minus unity. It is experimentally established that in the presence of fires in the room in the studied environment there is a grouping of distributed local states, the nature of which depends on the material of ignition. It is noted that the nature of the grouping can also be used as an information sign of early detection of fires in the premises and the recognition of the type of flammable material. It is established that fires lead to some increase in the time constant of fluctuations of the studied environmental factors. However, the rate of fires is not sensitive enough to use as a sign of early detection of fires. A more informative feature in the framework of the correlation ap-proach should be considered the degree of mutual (pair) correlation of fluctuations of environmental factors at zero manhole. It is established that in the case of alcohol ignition, an additional sign may be the mutual correlation of smoke and temperature at 20 laz. It is experimentally confirmed that for the considered combustible materials an effective sign of early ignition is the coefficient of pair correlation of carbon monoxide and temperature at zero manhole. The results of the study of the dynamics of recurrence of increments of dangerous environmental factors indicate the advantages of the degree of recurrence of states in comparison with the correlations for early detection of material fires in the premises. It has been experimentally established that the proposed measure of the current recurrence of conditions can be a reliable sign for the detection of early fires in the premises and used to increase the effective-ness of various technical means and systems for protection of premises from fires and explosions.

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