CFD study on combustion and emissions characteristics of methane-hydrogen co-firing in an EV burner
Considerable efforts are being made worldwide to convert carbon-free fuels from gas turbines in the power generation sector while focusing on reducing greenhouse gases. In this study, CFD analysis was conducted to investigate the effects of methane–hydrogen co-firing on the combustion characteristic...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-09-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25008561 |
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| _version_ | 1850080873861349376 |
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| author | Sanghyeon Lee Jaebin Lee Byeongmin Ahn Dowon Kang Jeongjae Hwang Yeseul Park Minsung Choi |
| author_facet | Sanghyeon Lee Jaebin Lee Byeongmin Ahn Dowon Kang Jeongjae Hwang Yeseul Park Minsung Choi |
| author_sort | Sanghyeon Lee |
| collection | DOAJ |
| description | Considerable efforts are being made worldwide to convert carbon-free fuels from gas turbines in the power generation sector while focusing on reducing greenhouse gases. In this study, CFD analysis was conducted to investigate the effects of methane–hydrogen co-firing on the combustion characteristics of a gas turbine combustor for power. This study aims to explore the combustion and emissions characteristics under various operating conditions, such as different co-firing and equivalence ratios. As the hydrogen co-firing ratio increased from 0% to 60%, the flame became increasingly attached to the burner, with the OH reaction zone shifting upstream by up to 80 mm, suggesting a higher risk of flashback owing to hydrogen. The emission characteristics showed an increase in NOx, reaching approximately 140 ppm at an equivalence ratio of 0.7, as observed in both the experiments and CFD. Changes in the operating conditions based on the equivalence ratio revealed the development of an inner recirculation zone within the burner, which led to changes in the flame structure. The maximum temperature in the flame region increased to approximately 2200 K. These numerical results can serve as a reference for providing operational guidelines and assessing the feasibility of hydrogen co-firing in industrial gas turbines. |
| format | Article |
| id | doaj-art-3b6839ab8e014d749b59330b0eaaa7af |
| institution | DOAJ |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-3b6839ab8e014d749b59330b0eaaa7af2025-08-20T02:44:51ZengElsevierCase Studies in Thermal Engineering2214-157X2025-09-017310659610.1016/j.csite.2025.106596CFD study on combustion and emissions characteristics of methane-hydrogen co-firing in an EV burnerSanghyeon Lee0Jaebin Lee1Byeongmin Ahn2Dowon Kang3Jeongjae Hwang4Yeseul Park5Minsung Choi6Department of Automotive Engineering, Gangneung-Wonju National University, Wonju-si, Gangwon-do, 26403, Republic of KoreaDepartment of Automotive Engineering, Gangneung-Wonju National University, Wonju-si, Gangwon-do, 26403, Republic of KoreaDepartment of Automotive Engineering, Gangneung-Wonju National University, Wonju-si, Gangwon-do, 26403, Republic of KoreaDepartment of Carbon-free Power Generation, Korea Institute of Machinery and Materials, Daejeon, 34103, Republic of KoreaDepartment of Carbon-free Power Generation, Korea Institute of Machinery and Materials, Daejeon, 34103, Republic of KoreaDepartment of Mechanical Engineering, Mokpo National University, Muan-gun, Jeollanam-do, 58554, Republic of Korea; Corresponding author.Department of Automotive Engineering, Gangneung-Wonju National University, Wonju-si, Gangwon-do, 26403, Republic of Korea; Corresponding author.Considerable efforts are being made worldwide to convert carbon-free fuels from gas turbines in the power generation sector while focusing on reducing greenhouse gases. In this study, CFD analysis was conducted to investigate the effects of methane–hydrogen co-firing on the combustion characteristics of a gas turbine combustor for power. This study aims to explore the combustion and emissions characteristics under various operating conditions, such as different co-firing and equivalence ratios. As the hydrogen co-firing ratio increased from 0% to 60%, the flame became increasingly attached to the burner, with the OH reaction zone shifting upstream by up to 80 mm, suggesting a higher risk of flashback owing to hydrogen. The emission characteristics showed an increase in NOx, reaching approximately 140 ppm at an equivalence ratio of 0.7, as observed in both the experiments and CFD. Changes in the operating conditions based on the equivalence ratio revealed the development of an inner recirculation zone within the burner, which led to changes in the flame structure. The maximum temperature in the flame region increased to approximately 2200 K. These numerical results can serve as a reference for providing operational guidelines and assessing the feasibility of hydrogen co-firing in industrial gas turbines.http://www.sciencedirect.com/science/article/pii/S2214157X25008561Hydrogen co-firingUnmixednessFlashbackNOx emissionsCFD analysisFlame structure |
| spellingShingle | Sanghyeon Lee Jaebin Lee Byeongmin Ahn Dowon Kang Jeongjae Hwang Yeseul Park Minsung Choi CFD study on combustion and emissions characteristics of methane-hydrogen co-firing in an EV burner Case Studies in Thermal Engineering Hydrogen co-firing Unmixedness Flashback NOx emissions CFD analysis Flame structure |
| title | CFD study on combustion and emissions characteristics of methane-hydrogen co-firing in an EV burner |
| title_full | CFD study on combustion and emissions characteristics of methane-hydrogen co-firing in an EV burner |
| title_fullStr | CFD study on combustion and emissions characteristics of methane-hydrogen co-firing in an EV burner |
| title_full_unstemmed | CFD study on combustion and emissions characteristics of methane-hydrogen co-firing in an EV burner |
| title_short | CFD study on combustion and emissions characteristics of methane-hydrogen co-firing in an EV burner |
| title_sort | cfd study on combustion and emissions characteristics of methane hydrogen co firing in an ev burner |
| topic | Hydrogen co-firing Unmixedness Flashback NOx emissions CFD analysis Flame structure |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25008561 |
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