Combined cycle power plantsCombustor for many fuels

Fuel flexibility is a particular issue affecting combustors and the design of the combustion chamber. If a wider range of fuel compositions are to be permitted in response to future requirements, in particular a higher proportion of hydrogen-rich gases, this will only be successful with extensive tests and very computer-intensive flow calculation processes for reacting flows. Even given the ever-increasing energy densities in fuel chambers as a result of increased combustion temperatures, the combustion must still remain stable and release few pollutants, whereby the fuel composition is an important parameter. The image shows the rotor and fuel chamber in a gas turbine. ©Siemens