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


Project Description

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.

Data obtained in this project for thermal conductivity of pure CO2
compared with current state-of-the-art correlation.


Project Details