Author: stefano chiocchini

Gas Turbine Combustion Instabilities Diagnosis

Combustion of lean and preformed mixtures (Lean Premixed Combustion, LPM) is the current state of the art among the combustion technologies for stationary gas turbine plants, fuelled by natural gas. This in terms both of energy conversion efficiency both of harmful emission reduction. However, just the ultra-lean premixed flames are those most prone to thermo-acoustic instabilities, that is to the onset of large amplitude pressure fluctuations, dues to the coupling between the unsteady expansion effects of heat release fluctuations and...