A significant amount of heat is wasted in many heat and power generation systems. Whilst, heat recirculation and heat recovery are used in many applications, maximising the sensible heat recovery is often limited by the quality of the heat and is constraint by avoiding a secondary combustion process to minimise hazardous (CO and NOx) emissions. The proposed research focuses on utilising hydrogen injection into hot combustion gases. To avoid safety issues related to hydrogen combustion due to its high reactivity, an ultra-lean mixture will be used instead. To burn the hydrogen at a low concentration below its lower flamelet limits, it is proposed to burn the mixture in porous media. The concept of porous burner technology has been demonstrated successfully for methane and installed in industrial-scale systems but has not yet been verified for hydrogen. The ultra-low CO and NOx emissions are a signature of porous burners because it is effectively premixed combustion with well-defined and constant stoichiometry. In a recent numerical study (not published yet), Christo has shown the feasibility of ultra-lean hydrogen combustion is a multi-layered porous media.
This project will be utilising advanced numerical methods predict the flow, temperature, species, radiation, and emission characteristics of premixed hydrogen-hot gases combustion in porous media. The study could also include design and testing of burners, with emphasis on selecting suitable porous materials. This project requires developing an understanding of the fundamentals of combustion, and strong knowledge in numerical simulations.
This is an exciting challenge that suits an ambitious, curiosity-driven researcher that is seeking to work at the leading edge of energy technology
This project is only open for Australian domestic students (Australian or NZ citizens or those who have Australian Permanent Residency)
The scholarship is AUD$40,000 p.a. for three years. In addition, the successful applicant will be given the opportunity to undertake a tailored leadership/change management program to increase the applicant's employability skills.
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