Abstract
Low pressure tests were performed to improve the design of a can-annular DLN combustor for the 110 MW-class heavy duty gas turbine being developed in China. The airflow distribution, pressure loss, ignition performance, flame stability, combustion efficiency, exit temperature profile, wall temperatures and emissions were all evaluated when operating with natural gas or oil or both. The results indicate that all the performance indices essentially reached their design specifications except for the NOx emissions. The NOx emissions of 94.33 ppm (15% O_2) at full load are far higher than expected over the entire load range. Future work will explore how to reduce the NOx emissions.
