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ISRN Thermodynamics
Volume 2012 (2012), Article ID 202715, 6 pages
http://dx.doi.org/10.5402/2012/202715
Research Article

Experimental Study of Effects of Coflow Air and Partial Premixing on Liquid Petroleum Gas Flames

Department of Mechanical Engineering, Indian Institute of Technology, Madras 600036, India

Received 6 December 2011; Accepted 15 January 2012

Academic Editors: J. K. Brennan, I. I. El-Sharkawy, K. Khanafer, M. Manciu, and G. Polidori

Copyright © 2012 R. Sreenivasan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Investigation of the influence of coflow and partial air premixing on liquid petroleum gas (LPG) flames in a lab-scale co-flow burner is presented. Primary air is supplied along with LPG in the inner core, and secondary air is supplied through the annulus region of the burner. Digital images are analyzed to study the flame shape, color, height, radius, and qualitative laminar flame speed. Concentrations of product gases and emission species are measured using a digital gas analyzer. Results indicate that in a dual air stream configuration, the partial premixing is optimum at % primary air value of around 45%.