A study on the correlation between frequency and eradication distance of sound fire extinguisher

Abstract

Modern buildings are becoming taller and larger, and their interior is becoming more complicated. Therefore, a proper firefighting facility is needed for a changing firefighting environment. Sound Fire Extinguisher is a new concept extinguisher that can be applied to a changing firefighting environment to increase extinguishable efficiency. Sound Fire Extinguisher is influenced by the characteristics of sound as much as it suppresses combustion by using characteristics of low frequency sound. In this study, we tried to confirm the correlation between frequency and eradication distance of Sound Fire Extinguisher through experiments. Experimental results show that when the pure tone of 30 ~ 100Hz is transmitted sequentially in a given experimental environment, the sound is decreased when the distance is 50cm apart, but the attenuation pattern of sound is different according to the frequency. At 70 ㎝ distance from the speaker, the attenuation was the lowest at 45Hz sound. At 150 ㎝ distance from the speaker, attenuation was best spread at 60Hz. Sound Fire Extinguisher is expected to maximize the extinguishable efficiency if it chooses the sound component according to the firefighting environment and the distance from the flame. © International Research Publication House.