The flame extinction limits of syngas flames were measured using a twin-flame counterflow burner. Plots of extinction limits (: volumetric percent of fuel in air) versus global stretch rates were generated at different fuel blend compositions and were extrapolated to determine the flame extinction limit corresponding to an experimentally unattainable zero-stretch condition. The zero-stretch extinction limit of mixtures decreases with the increase in concentration in the mixture. The average difference between the measured flame extinction limit and the Le Chatelier’s calculation is around 7% of the mean value. The measured OH chemiluminescence data indicates that regardless of blend composition the OH radical concentration reduces to a critical value prior to the flame extinction. The measured laminar flame velocity close to the extinction indicates that regardless of fuel composition, the premixed flame of hydrogen fuel blends extinguishes when the mixture laminar flame velocity falls below a critical value.
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e-mail: msubrama@bechtel.com
e-mail: gollahal@ou.edu
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Flame Extinction Limits of H2‐CO Fuel Blends
Ahsan R. Choudhuri,
Ahsan R. Choudhuri
Combustion and Propulsion Research Laboratory,
e-mail: ahsan@utep.edu
University of Texas at El Paso
, El Paso, TX 79968-0521
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Mahesh Subramanya,
Mahesh Subramanya
Combustion and Propulsion Research Laboratory,
e-mail: msubrama@bechtel.com
University of Texas at El Paso
, El Paso, TX 79968-0521
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Subramanyam R. Gollahalli
Subramanyam R. Gollahalli
Combustion and Flame Dynamics Laboratory,
e-mail: gollahal@ou.edu
University of Oklahoma
, Norman, OK 73019-1052
Search for other works by this author on:
Ahsan R. Choudhuri
Combustion and Propulsion Research Laboratory,
University of Texas at El Paso
, El Paso, TX 79968-0521e-mail: ahsan@utep.edu
Mahesh Subramanya
Combustion and Propulsion Research Laboratory,
University of Texas at El Paso
, El Paso, TX 79968-0521e-mail: msubrama@bechtel.com
Subramanyam R. Gollahalli
Combustion and Flame Dynamics Laboratory,
University of Oklahoma
, Norman, OK 73019-1052e-mail: gollahal@ou.edu
J. Eng. Gas Turbines Power. May 2008, 130(3): 031501 (8 pages)
Published Online: March 28, 2008
Article history
Received:
February 22, 2007
Revised:
September 26, 2007
Published:
March 28, 2008
Citation
Choudhuri, A. R., Subramanya, M., and Gollahalli, S. R. (March 28, 2008). "Flame Extinction Limits of H2‐CO Fuel Blends." ASME. J. Eng. Gas Turbines Power. May 2008; 130(3): 031501. https://doi.org/10.1115/1.2835059
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