The Eclipse Inc. Brightfire burner is an adjustable low NOx air-fuel burner. The Brightfire provides up to 35 percent lower NOx emissions and superior flame control compared to other burners. In addition, the Brightfire burner provides a wide turndown ratio and its sleek design will accommodate the tightest port constraints and provide years of trouble-free service.
The burner's low NOx emissions and superior flame control are accomplished through a combination of coaxial annular and central core flow streams. The momentum flux (mass flow rate x velocity) of the center jet is always dominant over the surrounding annular jet, except at the burner's minimum velocity setting, when the momentum flux are equal. The Brightfire's unique design varies the momentum flux of the individual jets by diverting gas flow from one jet to the other while changing the nozzle's total flow area. That is, as the center jet's momentum flux decreases, the annular jet's momentum flux increases.
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