MODELING OF NITROGEN OXIDE RELEASE IN COAL COMBUSTION B. S. Repic' , Z. G. Kostic' , M. P. Martinovic', and A. B. Gaiger UDC 662.69:536+662.61 A model for and results of calculating the chemical-thermodynamic equilibrium of compounds and elements contained in coal and in the air required for combustion are presented. They can be used to evaluate the possibility of decreasing the NOxrelease in the process of coal combustion. JEPTER7492019998 JEPTER749208