Thermodynamic Properties of Pure Water using Prub and Wagner EOS for GAMS

Abstract

Dynamic link library with functions for calculating the thermodynamic properties of pure Water in the equation-oriented optimization software GAMS (General Algebraic Modeling System). The library is based on the equation of state proposed by Prub and Wagner. The properties that can be calculated are enthalpy, entropy, density, and fugacity. The first function corresponds to the equation of state and allows the density to be calculated implicitly as a function of its pressure and temperature. The library was implemented in the C programming language and all its functions include their corresponding analytical gradient and Hessian matrix. It must be included using the $funcLibIn command (see GAMS help).