Hiring young talents: A hydrogen named desire
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- Published on Sunday, 25 August 2024 15:48
Towards desirable H2 machines
... that are simply better than the state of the art with conventional fuels. This is within reach.
CBOne is offering for internships to work on technical subjects relating to hydrogen, with recruitment opportunities by 2025. Are you a mechanical or process engineering student? Are you interested in fluid mechanics, energy and gas turbines? We'd like to hear from you.
The subject covers the following topics:
- Design of a burner capable of operating at 100% with hydrogen in premixed mode, towards stoichiometry close to one
- The safety of using hydrogen, particularly with regard to the risk of detonation
- Thermal management and transitions of hydrogen as a working fluid, from the cryogenic state to the gaseous state in the positive temperature range. Use of hydrogen's high calorific value as a coolant.
- Design of thermal machines capable of operating with moderately hot gases (around 1000°C), using hydrogen highly diluted in air, where the lack of thermal efficiency is offset by the simplicity of cooling, if any.
- Improving the combustion performance of conventional fuels by adding hydrogen: thermal performance, emissions performance (NOx, CO, soot, unburnt fuel), stability performance (passivation of combustion instabilities), combustion range performance (towards ultra-lean regimes).
Interested? This email address is being protected from spambots. You need JavaScript enabled to view it.
Hydrogen: An Eternal Flame
If you think of the lyrical balladry of the Bangles suggested by the title, hydrogen is much the same thing: it's very powerful and it burns very well!
On this site, you can follow the progress of our research into hydrogen combustion. The start of 2019 was hesitant, as we were aware of the technical problems that lay ahead. Safety. Flame temperature and the NOx produced. Flashback. Material temperatures and material brittleness. Burner life duration.
And then, almost immediately, a feeling of sympathy for this new fuel.
It's an aspect that may seem anodyne given the overall complexity of hydrogen implementation, but I think it's very important: hydrogen is non-toxic.
Another point is that hydrogen burns very well when highly diluted in air. We can envisage new types of engines where the performance associated with high combustion temperatures is compensated by a simplified architecture at lower temperatures.
The figure above shows our progress in hydrogen combustion (please also look at the patent section). We have been fortunate to be supported by six FFG projects. We also announce the MOeBIUS and LIQORNE follow-up projects that will start soon. Our specific contributions gathered so far on hydrogen combustion are as follows:
- The emo(o)tion probe is adequate to detect and monitor a hydrogen flame: SoTIC 2023: precision monitoring of hydrogen flames (symposium paper)
- Forced flow thermoacoustic drive can improve the combustion and lower the NOx (project Bluetifuel): What it takes to rule the H
- Additive manufacturing and hydrogen combustion make a happy marriage. ASME Turbo Expo 2023: Disruptive AM Geometries for Hydrogen Combustion
CBOne will take advantage of this research to go towards higher power levels, higher energy densities and operate nearer to stoichiometry. This is our program.
We are moving towards the Perpetuum mobile. As long as there is water and sunlight on Earth, we can produce hydrogen. And with this hydrogen, we can make our machines run. An eternal flaaaaaaame!!!!
