Impact of momentum ratio on JICF mechanism in micromix combustor for a hydrogen mGT

Amidst the increasing deployment of renewable electricity, the demand for energy storage rises. To address medium to long-term storage needs, utilizing excess electricity for hydrogen production emerges as one of the most promising solutions. In the context of a modern energy grid characterized by intermittent power sources and challenges in constructing large power plants in densely populated areas, the concept of a Decentralised Energy Systems (DES) network appears practical. Consequently, there is an urgent need for research into efficient micro Gas Turbine (mGT) units fuelled by hydrogen. Most notably, it is important to assess the impact of several key combustor design parameters to minimise the NO_x emissions. As a result, the study provides optimal values for both the momentum (3–4) and the primary equivalence ratio's (0.3–0.4) in order to optimise the hydrogen injection depth and minimise the high temperature zones near the combustor head wall, which will curtail NO_x emissions.