모형 가스터빈 연소기에서 NOx 배출량에 미치는 압력 및 비혼합도 효과 분석
Analysis of the Effects of Pressure and Unmixedness on NOx Emissions in a Model Gas Turbine Combustor
0
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
Pressure effects on NOx emission in a gas turbine combustor are numerically investigated in the present study. Initially, fully premixed flame condition with air and fuel injection at the combustor inlet is examined. Increasing pressure leads to a 0.08% rise in flame temperature and a significant 30% increase in NOx emissions. Technically premixed flame condition is then conducted. NOx emissions rise from 1.3 to 3 bar but decline beyond 3 bar due to combined pressure and mixing effects. Applying the NOx emission calibration formula, which accounts for pressure-induced changes while eliminating mixing influence, reveals a direct link between increased pressure and higher NOx emissions.
Abstract
Pressure effects on NOx emission in a gas turbine combustor are numerically investigated in the present study. Initially, fully premixed flame condition with air and fuel injection at the combustor inlet is examined. Increasing pressure leads to a 0.08% rise in flame temperature and a significant 30% increase in NOx emissions. Technically premixed flame condition is then conducted. NOx emissions rise from 1.3 to 3 bar but decline beyond 3 bar due to combined pressure and mixing effects. Applying the NOx emission calibration formula, which accounts for pressure-induced changes while eliminating mixing influence, reveals a direct link between increased pressure and higher NOx emissions.
참고문헌 (12)
- H. Y. Shih, "A computational study on the combustion of hydrogen", methane blended fuels for a micro gas turbines, 2014, pp.39, 15103~15115
- G. Cabot, "Experimental study of lean premixed turbulent combustion in a scale gas turbine chamber", Exp. Therm Fluid Sci., 28, pp.683~690 (2004)
- C. H. Cho, "A numerical approach to reduction of NOx emission from swirl premix burner in a gas turbine combustor", Appl. Therm. Eng, 59, pp.454~463 (2013)
- 왕위엔강, "A Numerical Study on NOX Emission of Swirl Premix Burner Affected by Air Fuel Ratio and Air Slit Area in a Model Gas Turbine Combustor", 한국연소학회지, 25(4), pp.1~7 (2020), 한국연소학회[DOI]
- 박성우, "Pressure effect on NO emission in methane", air lean-premixed flames, 2019, pp.33(6), 3031~3038[DOI]
- D. S. Han, "Experimental study of NOx correlation for fuel staged combustion using lab-scale gas turbine combustor at high pressure", Exp. Therm. Fluid Sci., 58, pp.62~69 (2014)
- F. Menter, "Zonal two equation kw turbulence models for aerodynamic flows", 23rd fluid dynamics, plasmadynamics, and lasers conference, pp.2906~ (1993)
- "GRI-mech 3.0" (1999)[URL]
- B. Magnussen, "On the structure of turbulence and a generalized eddy dissipation concept for chemical reaction in turbulent flow", 19th aerospace sciences meeting, pp.42~ (1981)
- Fluent, "ANSYS Fluent Theory Guide", ANSYS Inc, ~ (2022)
- F. Biagioli, "Effect of pressure and fuel–air unmixedness on NOx emissions from industrial gas turbine burners", Combust. Flame, 151, pp.274~288 (2007)
- ANSYS, "Chemkin-Pro 2022 R2, Theory Manual", ~ (2022)