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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

Author

Listed:
  • 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)

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.

Suggested Citation

  • Andrzej Kulczycki & Tomasz Białecki & Anna Łęgowik & Jerzy Merkisz & Ireneusz Pielecha, 2024. "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 T," Energies, MDPI, vol. 17(20), pages 1-21, October.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:20:p:5232-:d:1503192
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    References listed on IDEAS

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    1. Chenyu Gan & Qinglin Ma & Shengyu Bao & Xinming Wang & Tian Qiu & Shuiting Ding, 2023. "Discussion of the Standards System for Sustainable Aviation Fuels: An Aero-Engine Safety Perspective," Sustainability, MDPI, vol. 15(24), pages 1-28, December.
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