Study on hydrogen staged combustion for gas turbine

In this study, the configurational characteristics of a new type of hydrogen staged combustion chamber based on the principle of a micromix combustor were numerically studied. Thus, providing a reference for the staged configuration design of hydrogen combustors. The effects of the staged configuration, the connection modes between the middle panel and the front and rear stages of combustors with the staged configuration, the power distribution of the front and rear stage combustors, and the symmetry of the staged configuration on the flow performance and combustion performance in the combustion chamber were studied from various aspects. The research results show that compared with the conventional configuration of a micromix combustion chamber, the new staged hydrogen combustor designed with the application of protective panels and a suitable flow path structure can influence an increase in the normalized energy density at a small cost of NO_x emissions, which has wide application prospects and value for further research.