Experimental study of the modeling of the combustion characteristics of a micro gas turbine oil-fired combustor

On the basis of modeling test methods, a study was conducted of the performance of a 100 kW class micro gas turbine oil-fired combustor at the rated operating condition. Also the influence of the inlet air temperature change on the combustion characteristics of the combustor was studied under the condition of maintaining its outlet exhaust temperature unchanged. It has been found that the combustion efficiency of the combustor can reach more than 99%, and the total pressure recovery coefficient will amount to 94.5% with the maximal unevenness of the outlet temperature being less than 20% and NO_x emission index being below 9 g/kg. The burner liner wall surface temperature will assume a uniform distribution. In addition, with an increase of the inlet temperature of the combustor and enhancement of the combustion efficiency, the maximal outlet temperature non-uniformity will decrease and the emission indexes of CO and UHC (unburned hydrogen carbon), conspicuously drop. The total pressure recovery coefficient, however, will somewhat decrease and the NO_x emission index, somehow increase.