Influence of Multiple Parameters on the Efficiency of a Single Nozzle in a Heavy Gas Turbine Combustor

In order to extend the safe, stable and efficient operation range of lean burn combustion technology, an experimental investigation was conducted to get the combustion and emission performance of a singular nozzle including peripheral nozzle and double swirl nozzle. The investigation involves variations of operational parameters such as inlet air pressure, temperature, flow rate, and equivalence ratio. The results demonstrated that all tested nozzles achieved a combustion efficiency exceeding 99.8%, with the majority surpassing 99.9%. At 5 atmospheres, combustion efficiency was greater than 99.99%, which meeting standard requirements. Under partial load conditions, employing a control strategy of a constant equivalent ratio yielded positive benefits for the exit gas temperature but negative effects on emissions. The Peripheral nozzle end outperformed reference end scheme. NOx emissions are expected to increase as intake air temperatures increase.