Autoignition delay times of mixtures of alkanes and natural gas were studied experimentally in a high pressure and intermediate temperature turbulent flow reactor. Measurements were made at pressures between 7 atm and 15 atm and temperatures from 785 K to 935 K. The blends include binary and ternary mixtures of methane, ethane, and propane along with various natural gas blends. Based on these data, the effect of higher hydrocarbons on the ignition delay time of natural gas type fuels at actual gas turbine engine conditions has been quantified. While the addition of higher hydrocarbons in quantities of up to 30% was found to reduce the ignition delay by up to a factor of 4, the delay times were still found to be greater than 60 ms in all cases, which is well above the residence times of most engine premixers. The data were used to develop simple Arrhenius type correlations as a function of temperature, pressure, and fuel composition for design use.
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January 2011
Research Papers
An Experimental Ignition Delay Study of Alkane Mixtures in Turbulent Flows at Elevated Pressures and Intermediate Temperatures
David Beerer,
David Beerer
UC Irvine Combustion Laboratory
, Irvine, CA 92697-3550
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Scott Samuelsen,
Scott Samuelsen
UC Irvine Combustion Laboratory
, Irvine, CA 92697-3550
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Leonard Angello
Leonard Angello
Electric Power Research Institute
, Palo Alto, CA 94304-1395
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David Beerer
UC Irvine Combustion Laboratory
, Irvine, CA 92697-3550
Vincent McDonell
Scott Samuelsen
UC Irvine Combustion Laboratory
, Irvine, CA 92697-3550
Leonard Angello
Electric Power Research Institute
, Palo Alto, CA 94304-1395J. Eng. Gas Turbines Power. Jan 2011, 133(1): 011502 (8 pages)
Published Online: September 13, 2010
Article history
Received:
April 7, 2010
Revised:
April 30, 2010
Online:
September 13, 2010
Published:
September 13, 2010
Citation
Beerer, D., McDonell, V., Samuelsen, S., and Angello, L. (September 13, 2010). "An Experimental Ignition Delay Study of Alkane Mixtures in Turbulent Flows at Elevated Pressures and Intermediate Temperatures." ASME. J. Eng. Gas Turbines Power. January 2011; 133(1): 011502. https://doi.org/10.1115/1.4001981
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