Improved analytical representation of argon thermodynamic behavior

摘要: Abstract The equation of state Gosman and coworkers has been used extensively to calculate the thermodynamic properties simple fluids. Gosman's state, however, is inadequate when calculations are made (a) for liquids at low temperatures, (b) fluids very high temperatures pressures, (c) derived such as enthalpy, entropy, etc., temperatures. One objectives this work was improve extend its use lower higher pressures. Based on perturbation theory using Pople's expansion moderately anisotropic fluids, accurately represents vapor densities enthalpy departures vapor, liquid, fluid states functions three parameters (reduced temperature, reduced density acentric factor) over range Tr = 0.3 3.3 Pr 0 132 result an improved analytical representation these pressures This should be useful calculating reference system in studies.