Water-steam by IAPWS-IF97 equations

This option is intended for a precise calculation of the properties of pure water (or with minor impurities) and water vapor under any conditions. When this option is selected, the calculation of properties and phase equilibria is carried out using the WaterSteamPro thermodynamic library built into the Hydrosystem, the operation of which is based on the IAPWS-IF97 methods for water and steam. These methods are among the most accurate of their kind and are suitable for describing the behavior of water and water vapor in a wide range of pressures and temperatures. More detailed information about these methods can be found here.