Numerical Simulation Study on the Performance of a New Gas Burner for Radiant Heating

Compared with other fossil fuels, the combustion of natural gas releases fewer pollutants, with carbon dioxide being the main emission. As the need for environmental protection increases, gas combustion technology has been progressively developed, working to improve combustion efficiency and reduce harmful emissions. This study utilized computational fluid dynamics to conduct a numerical simulation of gas burners, establishing a physical model on the basis of the standard structural dimensions of the burners. This research focused on investigating the impacts of the excess air ratio, air temperature, and fuel load on combustion characteristics and nitrogen oxide emission levels. These results indicate that although increasing the excess air ratio can effectively reduce nitrogen oxide generation, it adversely affects the combustion efficiency. Additionally, a decrease in air temperature tends to reduce nitrogen oxide emissions, but adaptive adjustments to the combustion system are needed to sustain efficiency. While reducing the fuel load contributes to lower nitrogen oxide emissions, it compromises the combustion efficiency.