Research of the Process of Fuel Combustion in Boilers

Based on the analysis, the possible locations for installing the oxygen sensor in the boiler are established, which ensure its normal functioning (according to technical specifications). A simulation model of the air-fuel path of the boiler unit is proposed. Its research showed the ability to control the process of fuel combustion by adjusting the amount of air entering to the burner. Theoretical calculations of the composition of stoichiometric air-fuel mixtures for various types of hydrocarbons have been carried out. An algorithm is proposed to increase the accuracy of determining the excess air coefficient, based on the composition of the inlet air-fuel mixture and the combustion products of the fuel. Based on experimental studies, a method is proposed for increasing the accuracy of determining the excess air coefficient, based on taking into account the current volumetric concentration of oxygen in the air. A technique has been created for determining the current mass/volume concentration of oxygen in air based on meteorological parameters of the environment—temperature, absolute pressure and relative humidity. Studies of the daily/seasonal change in the volume concentration of oxygen in the air in Ukraine are carried out.