Most engineering analysis tools use physical properties of gas and liquid mixtures from embedded equations of state (EOS). EOS models implement mixing laws using data from pure components to calculate mixture properties. This can result in significant deviations from actual measured properties, particularly for points near the phase envelope or critical regions as well as non-binary mixtures containing heavier hydrocarbons, CO2, sour or corrosive components, and "wet gas" combinations. Errors in properties such as density, speed of sound, or specific heat will affect the accuracy of meter measurements, performance calculations (enthalpy and entropy), and pulsation analyses (amplitudes and frequencies). SwRI has performed extensive mixture property testing with a wide range of components over extensive pressure and temperature ranges to build a database for this analysis.
To help reduce the error in analysis tools and metering, SwRI will determine:
- The most accurate EOS for your application
- Expected margins of error
To contract with SwRI, please contact the Machinery Services Hotline at +1 210 522 3000.