Influence of the Fuel Distribution in Double Annular Combustors on the Emissions

The double annular combustor of a low-emission combustion chamber in a gas-turbine engine based on natural gas is considered. The distribution of fuel supply in the double annular combustor is investigated, and its influence on the toxic emissions is determined. The test bench and the experiments on the concentration of gas-mixture components in the combustion products are described; and the completeness of fuel combustion is calculated. The ratio of fuel flow rates in the loops corresponding to minimal NO x and CO 2 concentrations and most complete fuel combustion is determined.