Article,

Self-consistent equations for calculating the ideal gas heat capacity, enthalpy, and entropy

, and .
Fluid Phase Equilibria, 6 (3–4): 169 - 179 (1981)
DOI: 10.1016/0378-3812(81)85002-9

Abstract

Self-consistent equations for calculating the ideal gas heat capacity, enthalpy, and entropy are derived based on statistical mechanical formulae and with simplifications to facilitate engineering calculation. Some sixty compounds have been investigated. Comparison with existing heat capacity correlations, notably those of Passut and Danner and Duran et al., shows that the present equations are more accurate for most cases. The formulae are consistent in that they obey the basic thermodynamic relations among Cp*, H*, and S*. Only five (for Cp*) or six (for H* and S*) constants are used which are common to all properties.

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