The Fuel system prepares a clean fuel for burning in the combustor. Gas Turbines normally burn Natural gas but can also fire diesel or distillate fuels. Many Gas Turbines have dual firing capabilities.
A burner system and ignition system with the necessary safety interlocks are the most important items. A control valve regulates the amount of fuel burned . A filter prevents entry of any particles that may clog the burners. Natural gas directly from the wells is scrubbed and cleaned prior to admission into the turbine. External heaters heat the gas for better combustion.
For liquid fuels high pressure pumps pump fuel to the pressure required for fine atomisation of the fuel for burning.