Modeling and Velocity Measurements at the Burner Throat: The Relationship to Performance in a Model Industrial, Natural Gas Fired Burner

Emissions measurements of a model, industrial burner have shown that a particular fuel delivery strategy produces superior performance in terms of high combustion efficiency and low NOx when operated with strategic fuel and air mixing scenarios. Previous non-intrusive laser measurements have quantified the temperature and NO flow-field downstream of the burner quarl exit and have suggested that important features of the burner performance reside in the near field of the fuel injection. To better understand the performance of the burner laser anemometry and CFD modeling were conducted at the burner throat. The results identify subtle but significant differences in the early stages of the fuel injection that affect the burner performance.