Exergoeconomic analysis of a lean burn engine operating with ethanol and hydrogen addition

Sami Massalami Mohammed Elmassalami Ayad, Carlos Rodrigues Pereira Belchior, Jose Ricardo Sodre

Research output: Contribution to journalArticlepeer-review


This research applies exergy and exergoeconomic analyses to a turbocharged ethanol-fuelled engine enriched with hydrogen to operate in lean mixture conditions. Utilizing simulation data, the study examines the impacts of up to 6% of hydrogen fraction in the fuel for engine operation in the lean range from stoichiometric to fuel/air mixture equivalence ratio 0.7 are investigated. The exergy analysis revealed that hydrogen enrichment in lean operation can improve global exergy efficiency by nearly 30%. This improvement in efficiency was accompanied by significant reductions in exergy destruction and heat-based exergy transfer. The exergoeconomic evaluation indicated that hydrogen energy density and lean operation can reduce the fuel cost rate by up to 23%. The best operational scenario produced 29% decrease in specific exergoeconomic cost of electricity generation and 31% reduction in total losses.
Original languageEnglish
Pages (from-to)387-394
Number of pages8
JournalInternational Journal of Hydrogen Energy
Early online date1 Mar 2024
Publication statusPublished - 3 Apr 2024

Bibliographical note

Copyright © 2024, The Authors. Published by Elsevier Ltd on behalf of Hydrogen Energy Publications LLC. This is an open access article under the CC BY license (https://creativecommons.org/licenses/by/4.0/).


  • Hydrogen energy
  • Ethanol fuel
  • Internal combustion engines
  • Exergoeconomic analysis
  • Energy


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