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Title: High pressure shock tube ignition delay time measurements during oxy-methane combustion with high levels of CO 2 dilution

Abstract

For this study, ignition delay times and methane species time-histories were measured for methane/O 2 mixtures in a high CO 2 diluted environment using shock tube and laser absorption spectroscopy. The experiments were performed between 1300 K and 2000 K at pressures between 6 and 31 atm. The test mixtures were at an equivalence ratio of 1 with CH 4 mole fractions ranging from 3.5% -5% and up to 85% CO 2 with a bath of argon gas as necessary. The ignition delay times and methane time histories were measured using pressure, emission, and laser diagnostics. Predictive ability of two literature kinetic mechanisms (GRI 3.0 and ARAMCO Mech 1.3) was tested against current data. In general, both mechanisms performed reasonably well against measured ignition delay time data. The methane time-histories showed good agreement with the mechanisms for most of the conditions measured. A correlation for ignition delay time was created taking into the different parameters showing that the ignition activation energy for the fuel to be 49.64 kcal/mol. Through a sensitivity analysis, CO 2 is shown to slow the overall reaction rate and increase the ignition delay time. To the best of our knowledge, we present the first shock tubemore » data during ignition of methane/CO 2/O 2 under these conditions. In conclusion, current data provides crucial validation data needed for development of future kinetic mechanisms.« less

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Univ. of Central Florida, Orlando, FL (United States)
Publication Date:
Research Org.:
Univ. of Central Florida, Orlando, FL (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1347214
Alternate Identifier(s):
OSTI ID: 1353406
Grant/Contract Number:  
FE0025260
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Energy Resources Technology
Additional Journal Information:
Journal Volume: 139; Journal Issue: 4; Journal ID: ISSN 0195-0738
Publisher:
ASME
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; combustion; carbon dioxide; methane; shock tubes; ignition delay; ignition; lasers; fuels; absorption spectroscopy; sensitivity analysis

Citation Formats

Pryor, Owen, Barak, Samuel, Lopez, Joseph, Ninnemann, Erik, Koroglu, Batikan, Nash, Leigh, and Vasu, Subith. High pressure shock tube ignition delay time measurements during oxy-methane combustion with high levels of CO2 dilution. United States: N. p., 2017. Web. doi:10.1115/1.4036254.
Pryor, Owen, Barak, Samuel, Lopez, Joseph, Ninnemann, Erik, Koroglu, Batikan, Nash, Leigh, & Vasu, Subith. High pressure shock tube ignition delay time measurements during oxy-methane combustion with high levels of CO2 dilution. United States. doi:10.1115/1.4036254.
Pryor, Owen, Barak, Samuel, Lopez, Joseph, Ninnemann, Erik, Koroglu, Batikan, Nash, Leigh, and Vasu, Subith. Thu . "High pressure shock tube ignition delay time measurements during oxy-methane combustion with high levels of CO2 dilution". United States. doi:10.1115/1.4036254. https://www.osti.gov/servlets/purl/1347214.
@article{osti_1347214,
title = {High pressure shock tube ignition delay time measurements during oxy-methane combustion with high levels of CO2 dilution},
author = {Pryor, Owen and Barak, Samuel and Lopez, Joseph and Ninnemann, Erik and Koroglu, Batikan and Nash, Leigh and Vasu, Subith},
abstractNote = {For this study, ignition delay times and methane species time-histories were measured for methane/O2 mixtures in a high CO2 diluted environment using shock tube and laser absorption spectroscopy. The experiments were performed between 1300 K and 2000 K at pressures between 6 and 31 atm. The test mixtures were at an equivalence ratio of 1 with CH4 mole fractions ranging from 3.5% -5% and up to 85% CO2 with a bath of argon gas as necessary. The ignition delay times and methane time histories were measured using pressure, emission, and laser diagnostics. Predictive ability of two literature kinetic mechanisms (GRI 3.0 and ARAMCO Mech 1.3) was tested against current data. In general, both mechanisms performed reasonably well against measured ignition delay time data. The methane time-histories showed good agreement with the mechanisms for most of the conditions measured. A correlation for ignition delay time was created taking into the different parameters showing that the ignition activation energy for the fuel to be 49.64 kcal/mol. Through a sensitivity analysis, CO2 is shown to slow the overall reaction rate and increase the ignition delay time. To the best of our knowledge, we present the first shock tube data during ignition of methane/CO2/O2 under these conditions. In conclusion, current data provides crucial validation data needed for development of future kinetic mechanisms.},
doi = {10.1115/1.4036254},
journal = {Journal of Energy Resources Technology},
number = 4,
volume = 139,
place = {United States},
year = {Thu Mar 30 00:00:00 EDT 2017},
month = {Thu Mar 30 00:00:00 EDT 2017}
}

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Cited by: 1 work
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