About the article
A.N. Makarov
The results of the analysis of heat sources entering a high-power arc steelmaking furnace (ASF) are presented. It is stated that electric arcs are the main sources of heat in ASF; heat exchange of ionized gas volumes of arcs and non-ionized gas volumes of flares of gas-oxygen burners with heating surfaces in ASF is carried out by thermal radiation. It is proved that there is a significant error in calculating the heat exchange of gas volumes of arcs and flares with heating surfaces according to the law of thermal radiation of solid bodies, i.e. according to the Stefan – Boltzmann law. The laws of quantum thermal radiation of gas volumes of electric arcs and flares, flares, flare heating furnaces (FHF), steam boiler furnaces (SBF) of thermal power plants, combustion chambers (CC) of gas turbine units (GTU) of power plants discovered in Russia in 1996–2001 are considered. It is noted that, according to the open laws, cylindrical gas volumes of arcs, flares are inscribed in the gas volumes of arcs, flares and in calculations their thermal radiation is modeled with high accuracy by thermal radiation of cylindrical symmetry axes. On the basis of the open laws the methodology of heat exchange calculation in ASF, FHF, SBF, CC of GTU is developed.
electric arc, torch, heat exchange by radiation, gas volumes, laws of thermal radiation, furnaces, fireboxes, combustion chamber