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Applied Sciences
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Sustainable Alternative Fuels and Advanced Combustion Techniques
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Sustainable Alternative Fuels and Advanced Combustion Techniques

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Energy Science and Technology".

Deadline for manuscript submissions: 20 January 2025 | Viewed by 1028

Special Issue Editors

Dr. Bartosz Ciupek

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Guest Editor
Department of Fuels and Renewable Energy, Faculty of Environmental Engineering and Energy, Institute of Thermal Energy, Poznan University of Technology, 60-965 Poznan, Poland
Interests: combustion; fuels; boilers; air protection; heat exchange; combustion chambers
Special Issues, Collections and Topics in MDPI journals
Dr. Rafał Ślefarski

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Guest Editor
Department of Fuels and Renewable Energy, Faculty of Environmental Engineering and Energy, Institute of Thermal Energy, Poznan University of Technology, 60-965 Poznan, Poland
Interests: combustion process in atmospheric and pressurized energetic devices and machines; alternative fuels; ammonia; hydrogen; low-carbon energy transition; pollutant emissions in industrial sector; stationary internal combustion engines
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Antonio Ficarella

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Guest Editor
Department of Engineering for Innovation, University of Salento, Via Per Arnesano, I-73100 Lecce, Italy
Interests: energy systems; propulsive systems; fluid machinery; applied fluid dynamics; combustion
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue is dedicated to sustainable alternative fuels and advanced combustion techniques for low-emission and high-efficiency processes. Experimental papers supported by validations of results with numerical simulations and original experimental research in the field of novel technologies of combustion processes will be particularly welcome. The content presented in these papers should cover issues related to the production, processing and technological organisation for known and newly synthesised alternative fuels (solid, liquid and gaseous). Moreover, papers should cover issues regarding the methods of organisation, research and implementation of advanced combustion techniques, mainly in the context of their technical, thermodynamic or environmental aspects. Environmental papers related to alternative fuels and modern advanced combustion techniques will also be welcomed.

Respected Colleagues, we warmly invite you to contribute to this work.

Dr. Bartosz Ciupek
Dr. Rafał Ślefarski
Prof. Dr. Antonio Ficarella
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • alternative fuels
  • biomass
  • hydrogen
  • novel combustion technologies
  • toxic compound emissions
  • CFD modelling
  • environmental protection

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Published Papers (1 paper)

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Research

18 pages, 4926 KiB  
Article
The Influence of Helium Addition on the Combustion Process in a Hydrogen-Fueled Turbulent Jet Ignition Engine
by Dawid Mielcarzewicz and Ireneusz Pielecha
Appl. Sci. 2024, 14(19), 8996; https://doi.org/10.3390/app14198996 - 6 Oct 2024
Viewed by 789
Abstract
There are considerably fewer requirements for the quality of hydrogen combusted in an engine than its quality for fuel cells. Therefore, the analysis was carried out on the combustion of hydrogen–helium mixtures in an engine with a two-stage combustion system (TJI—Turbulent Jet Ignition). [...] Read more.
There are considerably fewer requirements for the quality of hydrogen combusted in an engine than its quality for fuel cells. Therefore, the analysis was carried out on the combustion of hydrogen–helium mixtures in an engine with a two-stage combustion system (TJI—Turbulent Jet Ignition). A single-cylinder research engine with a passive and active prechamber was used. A hydrogen–helium mixture was supplied to the main chamber in proportions of 100:0, 90:10, 80:20, 30:70, and 60:40 volume fractions. The prechamber was fueled only with pure hydrogen. Combustion was carried out in the lean charge range (λ = 1.5–3) and at a constant value of the Center of Combustion (CoC = 8–10 deg aTDC). It was found that the helium concentration in the mixture affected the changes in combustion pressure, heat release rate and the amount of heat release. It was observed that increasing the proportion of helium in the mixture by 10% also reduces the IMEP by approximately 10% and reduces the rate of heat release by approximately 20%. In addition, helium influences knock combustion. Limits of MAPO = 1 bar mean assumed that knock combustion occurs in the main chamber at values of λ < 1.9. Increasing the excess air ratio results in a gradual reduction in the temperature of the exhaust gas, which has a very rapid effect on changes in the concentration of nitrogen oxides. Studies carried out on the helium addition in hydrogen fuel indicate that it is possible to use such blends with a partial deterioration of the thermodynamic properties of the two-stage combustion process. Full article
(This article belongs to the Special Issue Sustainable Alternative Fuels and Advanced Combustion Techniques)
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