Equations and Computer Program for Calculating the Properties of Gases and Combustion Products

The properties of gases in the ideal gas state are calculated for substances most frequently encountered in calculations of thermal power processes. Among these are nitrogen N 2 , oxygen O 2 , carbon oxide CO, carbon dioxide CO 2 , water steam H 2 O, sulfur dioxide SO 2 , air, atmospheric nitrogen, nitrogen oxide NO, nitrogen dioxide NO 2 , argon Ar, neon Ne, and hydrogen H 2 . Air consists (by volume) of 78.03% nitrogen, 20.99% oxygen, 0.94% argon, 0.01% hydrogen, and 0.03% carbon dioxide [1]. Atmospheric nitrogen consists (by volume) of 98.76% nitrogen, 1.19% argon, 0.01% hydrogen, and 0.04% carbon dioxide [1]. The following constants are used in these calculations: the absolute gas constant R = 8.31451 J/(mol K), the molar masses of individual gases (Table 1), and the standard pressure p 0 = 0.1 MPa.