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A Contribution to the Realisation of the Energy Transition: Optimisation of Thermochemical Energy Conversion Processes for the Flexible Utilisation of Hydrogen-based Renewable Fuels Using Additive Manufacturing (SPP 2419)

Dienstag 29. November 2022

Deadline: 29. November 2022

The use of carbon-free chemical energy carriers such as hydrogen and ammonia in high-temperature thermochemical processes is essential for the transformation of the energy system towards a carbon-neutral energy conversion. These fuels offer significant advantages. They avoid greenhouse gas emissions, they can be produced with good efficiency utilising renewable electricity, and they are flexible in their use. Potentials of thermochemical energy conversion also arise when hydrogen is mixed with natural gas, as hydrogen can be successively added to the existing natural gas infrastructure, enabling a low-risk transition to a carbon-free energy economy. Here, the term “hydrogen-containing fuels” refers to mixtures of hydrogen, ammonia, and hydrocarbons with high hydrogen or ammonia content.

Compared to conventional fuels, hydrogen and ammonia have fundamentally different combustion properties, which are reflected, for example, in different burning rates, flammability limits, ignition energies, and pollutant formation behaviour. The advancement of hydrogen-containing fuel technology is important in all sectors including, for instance, power generation in gas turbines and the supply of process heat with industrial burners. It requires the joint increase of thermal efficiencies and reduction of pollutant emissions, while considering stability, fuel flexibility, and safety. These adaptations will be achieved here by a combination of simulation-based design with innovative manufacturing processes, e.g., additive manufacturing, and the associated degrees of freedom in materials and shaping. For this integrated approach, many of the relevant fundamental aspects are not yet sufficiently understood.

Accordingly, this Priority Programme takes a new interdisciplinary approach that links the competences of combustion science and additive manufacturing (AM). The hypothesis of the SPP is that only a comprehensive understanding of combustion fundamentals as well as the integration of modern 3D manufacturing processes and simulation-based design as well as the use and adoption of AM-suited materials can enable the simultaneous improvement of flexibility, efficiency, and emissions in thermochemical energy conversion processes.

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