SoTic 2025: About Pulsating a 1200°C Hydrogen Flame in the Cold and Other Stories

Our presentation at SoTic 2025

CBOne is attending the 2025 Symposium on Thermoacoustics in Combustion, in Trondheim, Norway, 8-11 September 2025 - where we will present our recent works carried out with the Siren E (energy) model. This will allow us to highlight the key features of this proprietary technology and its use in two combustion cases: one where thermoacoustic coupling is desired to enhance the combustion performance (BLUETIFUEL study) and one where it is feared (MOeBIUS.H study).

This is also an opportunity for us to present MOeBIUS technology, which could open the door to lean combustion in civil aviation, with unprecedented pollutant reduction performance.

Above all, it is an opportunity to talk about the end of the BLUETIFUEL project and to offer an article that brings this chapter of the adventure to a fitting close. A 1MW air-hydrogen burner has been successfully tested. All phases, from start-up to shutdown, including ramp-up, full load, and then controlled power reduction, went very well—repeatedly. No combustion instability was detected, premixed combustion was validated, and we were able to operate at full capacity while producing less than 20ppm of NOx! on the first firing, without any optimization.

The story behind it is also interesting. Initially, it was very difficult to find a place to conduct the tests. However, our project partner, P&P Industries AGmade an arrangement with Voestalpine Erzberg Gmb to have access to a testing site in Herzberg in November 2024. It was -6°C and snowing. This is testing! We would like to thank both parties, especially the skilled P&P personal who worked tirelessly in the cold from dawn to dusk. We would also like to thank FFG and Climafonds for sponsoring BLUETIFUEL (Energy Call 6, 2020), as well as FFG/Take Off for sponsoring the crystAIr and MOeBIUS.H projects (Take-Off Calls, 2022 and 2024).

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