Experimental Studies on Steam Controlling Burn-back of Wood Crib Fire under Total Flooding Condition

TL;DRAbstract

This paper studies the containment of steam system when it interacts with wood crib fire under the submerged condition. The results of experiment show that the steam could disturb the wood crib fire flame consistently in enclosure space and dilute the oxygen concentration around wood. With the increase of exposed area of wood crib, the probability that crib will burn back is rising. When fire is extinguished, the longer steam acting time is, the less likely that wood crib will burn back. When the injecting time of steam reaches to a certain quantity, the rekindle phenomenon of wood crib would be effective controlled. After a series of comparison experiment, this paper has found the critical time for a certain crib structure. When the steam injects for critical time in the enclosed space, the crib will not burn back at all.

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