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Straight streams for smoke cooling, what is missing? 

Lars Axelsson - The Swedish Firenerd
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Straight streams have been used for fire suppression for hundreds of years. Anecdotal evidence is plentiful on how to use them both inside and outside. But the research and the theories to support that empirical data is limited.
In 2022 I made this presentation on straight streams and smoke cooling. NIPV made a study on the effectiveness of smoke cooling and I was invited to speak about the topic. I wanted to give my thoughts on what the missing pieces are for understanding straight stream smoke cooling, from primarily a European perspective.
This presentation was recorded on the 14th International Congress on Fire Safety & Science at NIPV in the Netherlands.

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8 май 2023

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Комментарии : 3   
@MikaelWallSweden
@MikaelWallSweden Год назад
Spännande grejer! Vi skulle behöva få igång övningseldandet av hus igen för att bli duktiga på det här. Det är i dagsläget väldigt svårt att hitta verklighetstrogna sätt att öva och testa det. Nåt att klura på!
@minfire5266
@minfire5266 Год назад
감사합니다😊0
@jerryhughes5380
@jerryhughes5380 2 месяца назад
Water cools heat not smoke. Heat represents the physics of a fire while smoke and invisible fire gasses represent the chemistry of a fire. Smoke is particulate matter produced in a fire made thousands of chemical compounds many of which are petroleum based making smoke hydrophobic (water repellant). Per ULFSRI research only 5% to 10% of water applied to a fire contributes to extinguishment. When we add a chemical surfactant found in wetting agents water becomes 3 to 5 times more effective at extinguishing fire as compared to plain untreated water. Fight the heat with water, yes, but to get at the chemistry of the fire (smoke and fire gasses) you need to add chemistry to water. Chief Hughes Battalion 1 (retired) Chicago FD
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