• Yousuf Naseem
• TarangYadav
• Zarar Ahmed
• Sonu Das
• Rajesh K.R

This paper highlights fire extinguishing techniques used in today’s world which are having economic and ecological disadvantages. Fire accidents very hazardous and can cause a great loss of life and property, so a new fire extinguishing technique is designed. This paper compromises on design and fabrication of acoustic fire extinguisher. In this sound waves are used as it is efficient alternative in extinguishing flames. The main concept of this paper is to show that acoustic pressure and the air velocity produced from a speaker can extinguish flames. This paper highlights on the behavior of different sound frequencies in the collimator and surrounding environment. Experimental study and testing is done for different sound frequencies on which the extinguisher works smoothly. Different kind of fuels are tested with different sound frequency. The collimator which is used is converged which increases the air velocity. The air fuel ratio at the flame boundary is disturbed because of the variation of pressure and high air velocity which leads to extinguishing of flames. During conduction of the experiments the suitable range of sound frequency to extinguish flame was found to be between 30 to 50 Hz. However, in the experiment flame used in the testing were relatively of thinner boundary

Extinguishing, Sound, Acoustic pressure, High velocity, Air-Fuel ratio.

"Design and Fabrication of Acoustic Fire Extinguisher", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.24-27, May-2019, Available :http://www.jetir.org/papers/JETIRBZ06005.pdf

"Design and Fabrication of Acoustic Fire Extinguisher", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp24-27, May-2019, Available at : http://www.jetir.org/papers/JETIRBZ06005.pdf