Thermophysical properties, as functions of pressure and temperature, for over 300 fluids, in vapor or liquid phase

Abstract

An important undertaking for thermoacoustics, particularly for new concepts involving liquids, multiphases, etc., is the collection of thermophysical properties of fluids. Recently, a computer program was developed which calculates, with a typical accuracy of a few percent, all basic properties of pure fluids and binary mixtures over a full range of temperature, pressure, and concentration (for mixtures). The properties include mass density, specific heat at constant pressure, specific heat ratio, speed of sound, thermal expansion coefficient, viscosity, thermal conductivity, and the liquid–vapor equilibrium pressure. Currently, the program contains the necessary parameters for over 300 fluids, including simple, complex, and polar fluids. A number of parameters are used to calculate properties from reduced PVT surfaces for the various types of fluids; other parameters are used to obtain the liquid–vapor equilibrium line, accurate values on the liquid side of the line, and transport properties. The program is accessed with a web browser interface, so that it may be operated similarly on any computer platform.