IMPACT OF A FUEL ADDITIVE ON THE PERFORMANCE OF DOMESTIC GAS TURBINE UNITS

Abstract

This paper examines the impact of a methane-hydrogen blend additive on the operation of domestic gas turbine units and combined cycle power plants. A direct correlation is established between combustion chamber conditions and the power system’s output characteristics. Utilizing a numerical model within the Ansys Fluent environment, the temperature of combustion products and the volumetric concentrations of CO2 and H2O were estimated. The findings indicate that an increased hydrogen proportion leads to lower CO2 emissions and a higher combustor outlet temperature, which in turn directly boosts the power output of gas turbine units. Nevertheless, the allowable temperature increase is constrained by the service life limits of turbine blades. For combined cycle plants, the resulting rise in the H2O fraction within the combustion gases augments the thermal energy of the exhaust stream, thereby enhancing steam production in the heat recovery steam generator and improving overall plant efficiency.