CCS and Power Systems
Advanced Energy Systems - Hydrogen Turbines
Thermophysical Properties of CO2 and CO2-Rich Mixtures
Performer: National Institute of Standards & Technology
Project No: FE0003931
The National Institute of Standards and Technology (NIST) will execute experimental and modeling work on the thermodynamics of the CO2/H2O system, modeling work on the viscosity of pure CO2, and experimental and modeling work on the thermal conductivity of pure CO2. Specific activities include:
- Perform measurements of dew point for H2O in CO2 at temperatures from approximately 10 degrees Celsius (°C) to approximately 85 °C, at pressures up to about 7 mega-pascals (MPa). Analyze data to extract thermodynamic parameters such as mixture virial coefficients.
- Develop algorithm for reliable vapor-liquid equilibria (VLE) calculation in CO2/H2O and similar mixtures. Fit mixture model to available experimental data. Incorporate model and algorithm into NIST REFPROP software.
- Develop new standard viscosity correlation valid to at least 1273 Kelvin (K) and 1000 MPa.
- Using existing apparatus at NIST, measure pure CO2 thermal conductivity up to 750 K and 70 MPa.
- Develop new standard thermal conductivity correlation valid to at least 1273 K and 100 MPa.
Data obtained in this project for thermal conductivity of pure CO2
compared with current state-of-the-art correlation.