3D method of firefighting and fire jet’s impact on the thermodynamic effect

U ovom radu dan je opis spomenute 3D metode, te materije koja je potrebna da bi se moglo razumjeti na koji način se koristi navedena metoda u gašenju požara zatvorenog prostora i to posebno s osvrtom na tehnike koje se zasnivaju na hlađenju požarnih plinova. Navedena metoda poznata je još i pod nazivima: hlađenje plinova, ofenzivna metoda ili obuzdavanje plinske faze u strukturnim požarima. Ukratko je izveden opis vatrogasnih mlaznica koji daje jasniju predodžbu o taktici gašenja 3D metodom. U konačnici, opisane su prednosti metode gašenja požara vodenom maglom u odnosu na tradicionalne metode.It was common in the past for firefighters to focus their initial attack and strategy towards the visible flame, while the hidden dangers of flame exposure were ignored in the gaseous states. It is a fundamental error that has repeatedly taken the lives of firefighters. The lives of firefighters are particularly threatened in enclosed spaces due to uncombusted pyrolysis products. (when solid combustible materials, such as wood and plastic, decompose into flammable gaseous state during pyrolysis.) A new approach to putting out fires in enclosed spaces not only consists of extinguishing fires, but begins with an understanding of how fires develop; the conditions under which fires develop indoors; the ventilation conditions, and most important, the cooling of the smoke layer and the application of water mist in enclosed spaces. This paper provides a description of the aforementioned 3D methods and materials needed in order to understand the use of this method to suppress fires in enclosed spaces, especially with the emphasis on techniques that are based on cooling the fire gases. The above mentioned method is also known under terms and phrases such as gas phase cooling, the offensive method or the method of restraining the gas phase in structural fires. A short description of fire jets and a clear insight into the 3D method of firefighting will also be provided. Ultimately, the advantages of water mist fire suppression systems will also be outlined in comparison to traditional methods