Abstract
This chapter examines operational issues in gas turbine systems, which are caused by, or have an impact on, the performance of the combustion system. Based on a typical gas turbine operation schedule, and with a focus on natural gas based fuels, the chapter assesses the impact of various thermodynamic boundary conditions on the physics of the combustion processes. The chapter begins by summarising the fundamental requirements of a gas turbine combustion system, followed by more detailed discussions on flame stabilisation mechanisms, and the impact of operational conditions of a gas turbine on exhaust gas emissions (especially NOx and CO). The concluding sections review the fundamentals of thermo-acoustics and consider potential future technologies, such as exhaust gas recirculation (EGR), which will have impact on gas turbine combustion.
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