Combustion ammoniac/hydrogène en micro-turbine à gaz – ADONIS

ADONIS is driven by the urgent need to transition to sustainable energy sources. The project explores the use of ammonia, a promising hydrogen carrier, and hydrogen itself as alternative fuels for MGTs. The overarching goal is to produce a technically sound and accurate assessment of the impact of these fuels on MGT cycle performance, crucial for distributed power generation.

The project is structured into four key work packages (WPs), each tackling a specific aspect of ammonia-hydrogen combustion:

• WP1: MGT Model and Cycle Analysis
Focus on designing and optimizing the thermodynamic cycle of MGTs fueled with ammonia.
Analysis of various MGT layouts using Ebsilon software, considering factors like heat recuperation and water injection.
Life Cycle Analysis (LCA) initiated to consider different methods of ammonia production.

• WP2: Flame-Wall Interaction Studies
Investigate the interaction between ammonia flames and walls through experimental and numerical methods.
Key findings include the impact of wall temperature on NH3 concentration and flame behavior, emphasizing the importance of surface reactions in accurate flame structure estimation.

• WP3: Thermoacoustic Dynamics of Ammonia-Hydrogen Flames
Aim to understand the thermoacoustic dynamics of ammonia-hydrogen flames through CFD simulations and analytical models.
Developed models predicting the flame transfer function phase of ammonia-hydrogen flames, revealing critical differences in flame characteristics compared to conventional fuels.

• WP4: Ammonia Spray Atomization and Vaporization
Experimental studies on ammonia spray atomization and vaporization under various conditions.
Progress in developing numerical models to simulate flash-boiling phenomena in ammonia sprays, a crucial aspect of efficient fuel utilization.

As the project progresses into its next phase, the focus will be on refining the models and experimental methods, integrating findings, and moving towards practical applications. The goal is to pave the way for ammonia and hydrogen to become viable, sustainable options for power generation, aligning with global environmental goals and the transition towards a green energy future

The ADONIS project has been actively represented at various international conferences. Key conferences where the project was presented include:

• European Combustion Meeting 2023: This conference provided a platform for discussing the latest developments in combustion research. The ADONIS project was highlighted for its innovative approach to ammonia-hydrogen combustion, with a focus on the environmental benefits and technical challenges.
• ILASS European Meeting, Naples, September 2023: At this meeting, specialized in atomization and sprays, the project's findings on ammonia spray atomization and vaporization were presented. The discussions here were particularly beneficial for understanding the physical processes involved in fuel atomization and spray formation.
• ASME Turbo Expo 2024: An abstract from the ADONIS project was accepted for presentation at this prestigious event, which focuses on turbine technology and its advancements. The project's contribution is expected to center around the optimization of MGT cycles using ammonia-hydrogen mixtures.
• Combustion and Flame, 2024: Anticipated submission to this journal will focus on detailed combustion dynamics and flame-wall interaction studies, which are crucial for the design of efficient and low-emission MGT systems.