D2.5 – Report on H₂ Combustion System Optimization for Direct and Indirect Heating Applications

This report presents the development and optimisation of hydrogen combustion systems for both direct and indirect heating applications. It serves as a summary of the activities conducted within Work Package 2 of the HyInHeat project. The replacement of natural gas with hydrogen is a key pathway for reducing CO₂ emissions in energy-intensive industries. However, hydrogen combustion introduces challenges related to burner design, combustion stability, emissions, heat transfer, and material performance, requiring dedicated development and validation activities before industrial implementation.

The work focuses on the design, testing, and validation of hydrogen combustion systems for industrial furnaces and radiant tube technologies. Pilot-scale and industrial trials were conducted to evaluate combustion performance, safety, emissions, and process efficiency under hydrogen and hydrogen-natural gas blend conditions. The results provide important input for the design and retrofitting of industrial heating systems and support the large-scale demonstration activities carried out within the project.

Task 2.4 and Task 2.5 are collaborative efforts involving the following partners: AMI, TEC, SAR, NIP, AGA, AMOB, AMS and RWTH Aachen University.

Authors

Víctor Cuervo, Emilio Muñoz, Diego Cifrián | ArcelorMittal Global R&D (AMI)

Eider del Molino | TECNALIA (TEC)