Investigation of Autoignition and Combustion Stability of High Pressure Supercritical Carbon Dioxide Oxycombustion

 

Mass Fraction of Kerosene Jet in Air Crossflow<br/>at Supercritical Condition with Momentum Ratio J=20.
Mass Fraction of Kerosene Jet in Air Crossflow
at Supercritical Condition with Momentum Ratio J=20.
Performer: 
Georgia Tech Research Corporation
Website:  Georgia Tech Research Corporation
Award Number:  FE0025174
Project Duration:  10/01/2015 – 09/30/2018
Total Award Value:  $1,120,521
DOE Share:  $799,754
Performer Share:  $320,767
Technology Area:  Advanced Turbines
Key Technology: 
Location:  Atlanta, Georgia

Project Description

The Georgia Institute of Technology (Georgia Tech) project will focus on key knowledge gaps associated with supercritical carbon dioxide (SCO2) oxy-combustion at high pressure (up to 330 atm) conditions—namely, experimental studies of fundamental autoignition properties, development of an optimized chemical kinetic mechanism, and numerical and theoretical analyses of flow, mixing, and flame dynamics. The project has three basic objectives: (1) measurement of autoignition delays of CO2 diluted oxygen/fuel mixtures (natural gas and syngas) in a high-pressure shock tube (the experimental conditions cover pressures from 150 to 330 atm and temperatures from 1100 to 1800 K); (2) development of an optimized compact chemical kinetic mechanism for SCO2 oxy-combustion based on the data obtained; and (3) numerical and theoretical investigation of SCO2 oxy-combustion at pressure using the kinetic mechanism developed.

Project Benefits

Advanced SCO2 power cycles offer many potential advantages, including high thermal efficiency, low capital cost, and 99 percent CO2 capture. However, there are effectively no data on autoignition, combustion dynamics, and flame dynamics in the region where SCO2 oxy-combustion power cycle combustors would operate. The experimental data obtained from this Georgia Tech study are essential for the successful development of a chemical kinetic mechanism validated at supercritical conditions that can be used in computational fluid dynamics code to facilitate SCO2 combustor designs.

Contact Information

Federal Project Manager 
Seth Lawson: seth.lawson@netl.doe.gov
Technology Manager 
Richard Dennis: richard.dennis@netl.doe.gov
Principal Investigator 
Wenting Sun: wenting.sun@aerospace.gatech.edu
 

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