Abstract
Forest fires are big problem for whole the world community. The development of new effective methods is needed to increase the efficiency of the firefighting. We have investigated experimentally the suppression of thermal decomposition of different typical forest combustibles using water aerosol. Droplet sizes were 0.02-0.2mm; the concentration −3.8·10 −5 m 3 of water/m 3 , the flow rate −0.00035 l/s, flow velocity −2 m/s. Registration of the aerosol propagation and interaction with combustibles was done by high-speed video camera using Shadow Photography and Particle Tracking Velocimetry methods. The effective water volumes for fire suppression were determined together with corresponding suppression times. The obtained results could be used for improvement of the fire-fighting technologies.
Highlights
Forest fires are sharp problem for whole the world community [1,2,3]
The water feeding was started in 10-15 s after ignition
We assumed that the thermal decomposition of the forest combustible materials (FCM) is started if the temperature measured by one of the thermocouples was exceeding 370 K
Summary
Forest fires are sharp problem for whole the world community [1,2,3]. Determination of the minimal effective water volume for optimal fire-fighting is the key problem in this area. The aim of this work is experimental determination of the minimal water amount that is enough for effective suppression of the thermal decomposition of forest combustible materials (FCM) during pre-defined time interval.
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