Thermodynamic properties of gaseous methane

Abstract

Based upon the most probable values of the compressibility factor for gaseous methane proposed by the High Pressure Data Center of Japan (HPDCJ), the Society of material Science Japan, a new formulation of the equation of state was devised for the ranges of temperatures between 0 and 225℃ and of pressures up to 350atm. The computed results of the compressibility factor obtained by this new equation of state were then compared with those of available experimental data to evaluate the existing thermodynamic properties data of this substance. Additionally, the specific volume, the specific enthalpy, the specific entropy and the isobaric specific heat capacity were also calculated using the present formulation established.