General Information
    • ISSN: 1793-821X (Print)
    • Abbreviated Title: J. Clean Energy Technol.
    • Frequency: Quarterly
    • DOI: 10.18178/JOCET
    • Editor-in-Chief: Prof. Haider F. Abdul Amir
    • Executive Editor: Ms. Jennifer Zeng
    • Abstracting/ Indexing: EI (INSPEC, IET), Electronic Journals Library, Chemical Abstracts Services (CAS), Ulrich's Periodicals Directory, Google Scholar, ProQuest.
    • E-mail: jocet@ejournal.net
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Editor-in-chief
Universiti Malaysia Sabah, Malaysia.
I would like to express my appreciation to all the reviewers and editors, who have been working
very hard to ensure the quality of the journal. It's my honor to work with such a wonderful team.

JOCET 2015 Vol.3(3): 196-201 ISSN: 1793-821X
DOI: 10.7763/JOCET.2015.V3.194

Visualization of Multiple Flame Interactions: Appearance Structure and Combustion of LPG-Air Premixed Laminar Flames

U. Makmool, S. Jugjai, and S. Tia
Abstract—Interaction of multiple premixed laminar flames was studied by visualizations of the modified flame structures. Typical line-of-sight flame chemiluminescence image and spatial resolved OH distribution by means of planar laser-induced fluorescence (OH-PLIF) technique were applied for these observations. The premixed flames of liquefied petroleum gas (LPG)/air mixture with three inline nozzles were established to simulate the practical flame characteristics produced by the practical cooking burners. The obtained results are compared as a function of primary equivalence ratio () and inter-distance (S/Do) between nozzles. Effect of S/Do and  on the multiple premixed flame structures is well understood via the clarifying reaction zone distribution, which is in-situ visualized by OH PLIF technique. S/Do has a strong effect on interactions between flames, resulting in either flame enhancement or flame inhibition, depending on . CO and NOx emissions were measured in order to confirm the combustion performance of the multiple flames. It is recommended that the in-situ visualization is the focus for a study of the flame. This will help to avoid misunderstanding of the real combustion as it can be occurred by using the line-of-sight observation technique.

Index Terms—Partially premixed flame, flame structures, reaction zone, OH-PLIF, interaction between flames.

U. Makmool is with the Pilot Plant Development and Training Institute, King Mongkut’s University of Technology Thonburi, Bangkok, Thailand (e-mail: usa.mak@kmutt.ac.th).
S. Jugjai is with Department of Mechanical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok, Thailand (e-mail: sumrueng.jug@kmutt.ac.th).
S. Tia is with Department of Chemical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok, Thailand (e-mail: suvit.tia@kmutt.ac.th).

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Cite:U. Makmool, S. Jugjai, and S. Tia, "Visualization of Multiple Flame Interactions: Appearance Structure and Combustion of LPG-Air Premixed Laminar Flames," Journal of Clean Energy Technologies vol. 3, no. 3, pp. 196-201, 2015.

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