The Coefficient of Reactivity and Activation Energy as the Criteria of Assessment of the Influence of Sustainable Aviation Fuels on Combustion Process in a Rapid Compression Combustion Machine and a Turbine Engine

Andrzej Kulczycki, Tomasz Białecki, Anna Łęgowik, Jerzy Merkisz () and Ireneusz Pielecha
Additional contact information
Andrzej Kulczycki: Air Force Institute of Technology, ul. Księcia Bolesława 6, 01-494 Warsaw, Poland
Tomasz Białecki: Air Force Institute of Technology, ul. Księcia Bolesława 6, 01-494 Warsaw, Poland
Anna Łęgowik: Air Force Institute of Technology, ul. Księcia Bolesława 6, 01-494 Warsaw, Poland
Jerzy Merkisz: Faculty of Civil and Transport Engineering, Poznan University of Technology, ul. Piotrowo 3, 60-965 Poznan, Poland
Ireneusz Pielecha: Faculty of Civil and Transport Engineering, Poznan University of Technology, ul. Piotrowo 3, 60-965 Poznan, Poland

Energies, 2024, vol. 17, issue 20, 1-21

Abstract: Aviation in Europe is required to use fuels containing up to 2 wt. % of sustainable aviation fuels (SAFs). A better understanding of the impact of SAFs on the combustion process will be helpful in solving problems that may arise from the widespread use of these kinds of fuels. It was assumed that the reactivity coefficient α i and the activation energy could be a criteria for assessing the impact of SAFs on the combustion process. Based on DGEN engine tests, the following activation energy values of C O 2 and C O formation reactions were obtained—Jet A-1: E a C O 2 / R = 3480 and E a C O / R = 982 ; A30: E a C O 2 / R = 3705 and E a C O / R = 2903 ; and H30: E a C O 2 / R = 3637 and E a C O / R = 2843 . These results indicate differences in the structure of combustion reaction chains involved by the SAF addition to Jet A-1 fuel. The same conclusion has been formulated on the basis of the reactivity coefficient α i . The values of maximum cylinder pressure (P max ) obtained during indicator RCCM (rapid compression combustion machine) tests correlated with both the activation energy and coefficients of reactivity. This suggests that the influence of SAF addition to Jet A-1 fuel on the structure of chemical reactions chain during RCCM tests is similar to the influence during DGEN 380 tests. The assumption stated above was confirmed. This indicates the possibility of the preliminary forecasting of C O 2 and C O emissions from the DGEN 380 engine based on the test at the RCCM stand.

Keywords: sustainable aviation fuel; kinetic of combustion process; complete combustion; uncomplete combustion (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/17/20/5232/pdf (application/pdf)
https://www.mdpi.com/1996-1073/17/20/5232/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:17:y:2024:i:20:p:5232-:d:1503192

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().