NOX-REDUCTION BY 2-STAGE COMBUSTION (FAT-LEAN COMBUSTION) IN GAS-TURBINE COMBUSTION-CHAMBERS

In the present article a pipe combustion chamber is presented, which was developed in the project TURBOFLAM, financed by the BMFT (Federal Ministry for Research and Technology), and which operates according to the concept of fat-lean combustion. The investigations of the combustion chamber include several constructional conditions differing in respect of the nozzle used for the preparation of the fuel, and also of the admixing module for achieving a quick change from the fat to the lean combustion. The experiments carried out include a variation of the equivalence relations for three different combustion chamber inlet temperatures (T3 = 550 K, 650 K and 740 K) and pressures up to 6 bar.