Hranovska O. The imrovement of stabilizer burners with microflame gases combustion

The thesis is devoted to the development of microflame combustion of gaseous fuel in stabilizer burners to ensure sustainable and high performance in a wide range of conditions on airflow and excess air coefficient reducing nitrogen oxide emissions and to develop recommendations for the selection of the design parameters and schemes of mixing fuel and air depending on the circumstances of power equipment. Theoretical studies were based on the main provisions of semi-empirical theories of convective mass transfer and turbulent jets, laws flow around bodies, and kinetic and diffusion combustion. Experimental studies were performed on the experimental stand with using the instruments and equipment bench. Scientific novelty of the results is enhanced dates on geometric and mass transfer characteristics of the recirculation zone behind stabilizers in the air flow while supplying gaseous fuel behind the stabilizer under isothermal conditions and with combustion of gas. For the first time are proposed the methods to wide range of sustainable and high-effective performance of stabilizer burners with microflame combustion gas in an increase airflow, expanding the range of variation of excess air and reduce the oxygen content of oxidants. The practical significance of the results is the development of methods and design of microflame stabiliser burners which used in industrial and municipal energy. The materials presented in the thesis, used in the classroom for training specialists in heat power faculty "KPI" in the speciality "Thermal power plants" and other specialties. The results and conclusions of this thesis can be effectively applied in fuel consumption units of various types, including industrial and power boilers, industrial furnaces, combustion chambers and gas turbine combined-cycle plants, dried and air heaters.