Authors : Bong-Young Kim, Uk-Jin Song, Seong-Geon Baeand and Myung-Jin Bae
Abstract: Fire is a very important thing in human civilization. However, fire causes enormous damage to humans by conflagration. Due to the development of society, the fire protection environment has changed and more efficient fire protection technology is needed and sound fire extinguisher can be an alternative. Sound fire extinguisher has the principle that the fire is turned off by using various phenomena caused by the resonance of the sound component. Sound fire extinguisher can easily suppress the flame by supplying a sound component appropriate to the combustion characteristics of the flame. In this study, a low frequency speaker was used to supply different sound components to the candlelight and the resonance dispersion size of the candlelight was measured. Through these experiments, we tried to identify a sound component that can be easily turned off by candlelight. Experimental results show that although, the resonance is somewhat different depending on the position of the candlelight, the candlelight is dispersed by resonance at frequencies of about 30, 70 and 100 Hz at most positions. It can be predicted that the candlelight can be easily turned off by resonance at the frequency of harmonics based on about 30 Hz band.
Bong-Young Kim, Uk-Jin Song, Seong-Geon Baeand and Myung-Jin Bae, 2019. A Study on the Resonance Dispersion of Candlelight According to the Change of Sound Component. Journal of Engineering and Applied Sciences, 14: 2450-2455.