In this alternative concept, the reagents are not pre-mixed and there is not air gradual addition in primary, intermediate and dilution zones as in conventional gas turbine combustion chamber. Total air is added thought the swirler and the structure of the recirculation flow is responsible to create two combustion zone (primary and secondary) with overall equivalence ratios below 0.6. The operational parameters have a strong influence on the formation/weakening/destroying the recirculation zone formed in the secondary chamber. Thus, the results showed to conciliate the pollutant emissions is essential lower fuel jet Reynolds numbers (15,000) and global equivalence ratio around φ = 0.6. At these conditions CO and UHC are almost inexistent, i.e, near to zero. The exception to these levels is observed for 50° and 60°. NOx emissions suffer the largest increase between Φ = 0.4 and 0.6, after this interval the pollutant concentrations have a behavior without fluctuations and with values below 40 ppm. In gas turbine operation global equivalence ratios can reach 0.15, making it necessary to inject an additional air
supply at a dilution region, positioned after the secondary chamber.