NOx suppression from a micro-gas turbine approaching the mild-combustion regime

The authors present in this paper a refined methodology, already introduced in a recent paper, aiming to find the best compromises between the need of reducing the NOx emission from a micro-gas turbine and the preservation of satisfactory efficiency and energy saving levels. The method founds on an integrated approach consisting of an advanced cycle analysis, which includes the component matching study, and the CFD based validation of the most interesting cases. The latter refer to the activation of the exhaust recirculation to the compressor inlet, in order to generate conditions close to those characterized by a mild combustion.