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

Abstract

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.

Publication DOI: https://doi.org/10.1016/j.ijhydene.2024.02.279
Divisions: College of Engineering & Physical Sciences > School of Engineering and Technology > Mechanical, Biomedical & Design
Aston University (General)
Funding Information: The authors thank the Human Resources Programme of the Brazilian National Agency of Oil, Natural Gas and Biofuels – PRH-ANP – and the research funding agencies CAPES, CNPq and FINEP, for the financial support to this research.
Additional Information: 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/).
Uncontrolled Keywords: Hydrogen energy,Ethanol fuel,Internal combustion engines,Exergoeconomic analysis,Energy
Publication ISSN: 1879-3487
Last Modified: 09 Dec 2024 09:10
Date Deposited: 04 Mar 2024 12:23
Full Text Link:
Related URLs: https://www.sci ... 360319924007171 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2024-04-03
Published Online Date: 2024-03-01
Accepted Date: 2024-02-21
Authors: Ayad, Sami Massalami Mohammed Elmassalami
Belchior, Carlos Rodrigues Pereira
Sodre, Jose Ricardo (ORCID Profile 0000-0003-2243-8719)

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