Improving NOx Entitlement with Axial Staging
- Embry-Riddle Aeronautical Univ., Daytona Beach, FL (United States)
- Univ. of Central Florida, Orlando, FL (United States)
Manufacturers are constantly under pressure to increase the efficiency of air breathing gas turbines for the next generation of ground based combined cycle power plants without a significant increase in NOx emissions. Axially staging some of the fuel and air is one method manufacturers are exploring to increase the firing temperature with a minimal NOx increase. This project used a high-pressure combustion facility to systematically explore the axial stage design space at conditions relevant to engine manufacturers. Chemiluminescence and PIV images of the reacting jets were obtained as well as exit emissions. This data was used to create correlations for reacting jets-in-crossflow, analogous to what currently exists for non-reacting jets-in-crossflow. Two CFD programs were used to model these results to quantifying the accuracy of the codes and help elucidate the underlying physics that governs the high-pressure reacting jet in crossflow. This report indicates a change in flame/flow-field behavior, and emissions characteristics with increasing pressure from 1-5.5 atm. Additionally, the effects of preheating and premixing the axial jet are explored at various conditions and show increased jet liftoff leads to a decrease in NOx emissions.
- Research Organization:
- Embry-Riddle Aeronautical Univ., Daytona Beach, FL (United States)
- Sponsoring Organization:
- USDOE Office of Fossil Energy (FE)
- Contributing Organization:
- General Electric Global Research Center
- DOE Contract Number:
- FE0031227
- OSTI ID:
- 1846098
- Report Number(s):
- DOE_ERAU_0031227
- Country of Publication:
- United States
- Language:
- English
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