Welcome To UTPedia

We would like to introduce you, the new knowledge repository product called UTPedia. The UTP Electronic and Digital Intellectual Asset. It stores digitized version of thesis, final year project reports and past year examination questions.

Browse content of UTPedia using Year, Subject, Department and Author and Search for required document using Searching facilities included in UTPedia. UTPedia with full text are accessible for all registered users, whereas only the physical information and metadata can be retrieved by public users. UTPedia collaborating and connecting peoples with university’s intellectual works from anywhere.

Disclaimer - Universiti Teknologi PETRONAS shall not be liable for any loss or damage caused by the usage of any information obtained from this web site.Best viewed using Mozilla Firefox 3 or IE 7 with resolution 1024 x 768.

Study of Sound Wave as a Flame Extinguisher

Alexander, Alan Arulandom (2015) Study of Sound Wave as a Flame Extinguisher. IRC, Universiti Teknologi PETRONAS. (Unpublished)

Download (2MB) | Preview


The current fire extinguishing comes with various drawbacks. The need for new fire extinguishing techniques is vital as fire accidents cause deaths and injuries. Sound wave could be one of the potential alternative in putting off flames. The acoustic pressure and air velocity produced from a speaker is the main theory used to explain how sound waves put off flames. This research aims study and analyze the effect of different frequency of sound wave on flames. A simulation of sound wave was carried out to study behavior acoustic wave propagation in the collimator and surrounding environment. Experiments were then conducted to study suitable sound wave frequency range to extinguish flame and to analyze the acoustic-flame interaction through observations from camera. Three different sources of flames were used to with three different state of fuel (solid, liquid and gas). From the first part of results, using an ordinary collimator, it was found that sound wave can only extinguish gas fuel type flames at 91 Hz. However, in the second part of the experiment, the sound wave manage to extinguish all flames of different fuel types, with the converged collimator design. This mainly is due to the converged collimator gives a higher air velocity output as compared to an ordinary collimator design, which was verified through simulation result. The combination of varying high and low pressure and coupled with high flow air velocity, which in then causes disturbances in air-fuel ratio at the flame boundary (leading to thinning of flame boundary), is one of the possible explanation leading to flame extinction. In both experiment, the frequency range needed suppress the flames was found to be, between 90 to 94 Hz. However, in both experiments the flame boundary used was relatively small as compared real fire accidents due to safety consideration. Nevertheless, this sound wave based fire suppression technology could be used to combat early stages of fire accidents

Item Type: Final Year Project
Academic Subject : Academic Department - Mechanical Engineering - Petroleum
Subject: T Technology > TJ Mechanical engineering and machinery
Divisions: Engineering > Mechanical
Depositing User: Ahmad Suhairi Mohamed Lazim
Date Deposited: 07 Oct 2015 10:19
Last Modified: 25 Jan 2017 09:35
URI: http://utpedia.utp.edu.my/id/eprint/15706

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...