Case study on SAF emissions from air travel considering emissions modeling impact
The environmental impact of air travel, largely driven by fossil-fuel consumption, remains a critical subject of debate. Addressing this challenge requires immediately adopting sustainable practices to mitigate its environmental footprint. While hydrogen and hybrid-electric propulsion technologies s...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Transportation Research Interdisciplinary Perspectives |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S259019822500020X |
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| author | Hakkı Aksoy María García Domene Parthiban Loganathan Simon Blakey Elias Zea Ricardo Vinuesa Evelyn Otero |
| author_facet | Hakkı Aksoy María García Domene Parthiban Loganathan Simon Blakey Elias Zea Ricardo Vinuesa Evelyn Otero |
| author_sort | Hakkı Aksoy |
| collection | DOAJ |
| description | The environmental impact of air travel, largely driven by fossil-fuel consumption, remains a critical subject of debate. Addressing this challenge requires immediately adopting sustainable practices to mitigate its environmental footprint. While hydrogen and hybrid-electric propulsion technologies show promise for the future, current efforts focus on Sustainable Aviation Fuels (SAF) as a viable near-term solution to reduce aviation emissions while ensuring compatibility with existing aviation infrastructure. This paper examines the environmental impact of air travel, focusing on the emissions associated with conventional fuel and SAF. Using two methodologies, namely the subsonic fuel flow method (SF2) and an improved version of it, the emissions corrected subsonic fuel flow method (EC-SF2), non-CO2 emissions trends are analyzed along a flight trajectory from Stockholm to Bordeaux. The comparison between the two methods underscores the importance of accurate emission modeling, particularly for SAF correction on emission index. The SF2 method reveals that SAF fuels with higher calorific value than conventional fuel increased total HC and CO emissions while decreasing NOx emissions. Conversely, the EC-SF2 method resulted in a more homogeneous emissions reduction trend. Our proposed methodology, which corrects both fuel flow and emission index based on SAF-specific data, could, therefore, offer a more reliable estimation of emissions behavior for SAF. These findings highlight the sensitivity of emissions modeling on environmental assessment. |
| format | Article |
| id | doaj-art-28bcb3cd650746fcbb49e262a1d975fa |
| institution | Kabale University |
| issn | 2590-1982 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Transportation Research Interdisciplinary Perspectives |
| spelling | doaj-art-28bcb3cd650746fcbb49e262a1d975fa2025-02-09T05:01:21ZengElsevierTransportation Research Interdisciplinary Perspectives2590-19822025-01-0129101341Case study on SAF emissions from air travel considering emissions modeling impactHakkı Aksoy0María García Domene1Parthiban Loganathan2Simon Blakey3Elias Zea4Ricardo Vinuesa5Evelyn Otero6Department of Engineering Mechanics, KTH Royal Institute of Technology, Stockholm, Sweden; Corresponding author.Department of Engineering Mechanics, KTH Royal Institute of Technology, Stockholm, SwedenDepartment of Engineering Mechanics, KTH Royal Institute of Technology, Stockholm, SwedenDepartment of Mechanical Engineering, University of Birmingham, Birmingham, United KingdomDepartment of Engineering Mechanics, KTH Royal Institute of Technology, Stockholm, SwedenDepartment of Engineering Mechanics, KTH Royal Institute of Technology, Stockholm, SwedenDepartment of Engineering Mechanics, KTH Royal Institute of Technology, Stockholm, SwedenThe environmental impact of air travel, largely driven by fossil-fuel consumption, remains a critical subject of debate. Addressing this challenge requires immediately adopting sustainable practices to mitigate its environmental footprint. While hydrogen and hybrid-electric propulsion technologies show promise for the future, current efforts focus on Sustainable Aviation Fuels (SAF) as a viable near-term solution to reduce aviation emissions while ensuring compatibility with existing aviation infrastructure. This paper examines the environmental impact of air travel, focusing on the emissions associated with conventional fuel and SAF. Using two methodologies, namely the subsonic fuel flow method (SF2) and an improved version of it, the emissions corrected subsonic fuel flow method (EC-SF2), non-CO2 emissions trends are analyzed along a flight trajectory from Stockholm to Bordeaux. The comparison between the two methods underscores the importance of accurate emission modeling, particularly for SAF correction on emission index. The SF2 method reveals that SAF fuels with higher calorific value than conventional fuel increased total HC and CO emissions while decreasing NOx emissions. Conversely, the EC-SF2 method resulted in a more homogeneous emissions reduction trend. Our proposed methodology, which corrects both fuel flow and emission index based on SAF-specific data, could, therefore, offer a more reliable estimation of emissions behavior for SAF. These findings highlight the sensitivity of emissions modeling on environmental assessment.http://www.sciencedirect.com/science/article/pii/S259019822500020XSustainable aviation fuelsEmissions analysisEnvironmental impactAir travel |
| spellingShingle | Hakkı Aksoy María García Domene Parthiban Loganathan Simon Blakey Elias Zea Ricardo Vinuesa Evelyn Otero Case study on SAF emissions from air travel considering emissions modeling impact Transportation Research Interdisciplinary Perspectives Sustainable aviation fuels Emissions analysis Environmental impact Air travel |
| title | Case study on SAF emissions from air travel considering emissions modeling impact |
| title_full | Case study on SAF emissions from air travel considering emissions modeling impact |
| title_fullStr | Case study on SAF emissions from air travel considering emissions modeling impact |
| title_full_unstemmed | Case study on SAF emissions from air travel considering emissions modeling impact |
| title_short | Case study on SAF emissions from air travel considering emissions modeling impact |
| title_sort | case study on saf emissions from air travel considering emissions modeling impact |
| topic | Sustainable aviation fuels Emissions analysis Environmental impact Air travel |
| url | http://www.sciencedirect.com/science/article/pii/S259019822500020X |
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