Numerical investigation : performances of a standard biogas in a 100 kWe MGT

Designed to operate with natural gas, the MGT are devices technologically recent with a noticeable number of functional advantages. Energetically and environmentally respectful and with high performance, they produce low emissions mainly of nitrogen oxides of which the toxic devastating effects are a recent scientific medical discovery. Their main problems are in sensitivity to the variation in flux. Many theoretical and experimental investigations applied to improve their functions and characteristics as well as for understanding their flexibility also by operating with fuels different from the natural gas such as the several biofuels. For reasons related to the design economies, the preliminary numerical investigations such as that of the work in question on a model of combustor of a 100 kWe MGT are essential. To limit nitrogen oxides production, established lean premixed conditions. It is studied the behavior of a standard biogas M65 starting from the mouth of flame, through the laminar model up to the whole combustor but through the model k-ε, at different adducted flows. It is liked also to submit a hint related to the variation of thermal profiles or of concentrations in the combustor when the supplied natural gases have different composition, as well as at different flows and when adopted simplified kinetic paths of model to understand a sort of acceptable degree of simplification, for studies of first approximation.