Thermophysical Properties of Fluid Systems

Accurate thermophysical properties are available for several fluids. These data include the following:

  • Density
  • Cp
  • Enthalpy
  • Internal energy
  • Viscosity
  • Joule-Thomson coefficient
  • Specific volume
  • Cv
  • Entropy
  • Speed of Sound
  • Thermal conductivity
  • Surface tension (saturation curve only)

Please follow the steps below to select the data required.

  1. Please select the species of interest:
  2. Please choose the units you wish to use:
    Temperature  Kelvin  Celsius  Fahrenheit  Rankine
    Pressure  MPa  bar  atm.  torr  psia
    Density  mol/l  mol/m3  g/ml  kg/m3  lb-mole/ft3  lbm/ft3
    Energy  kJ/mol  kJ/kg  kcal/mol  Btu/lb-mole  kcal/g  Btu/lbm
    Velocity  m/s  ft/s  mph
    Viscosity  uPa*s  Pa*s  cP  lbm/ft*s
    Surface tension*  N/m  dyn/cm  lb/ft  lb/in

    *Surface tension values are only available along the saturation curve.

  3. Choose the desired type of data:
    Isothermal properties   Saturation properties — temperature increments
    Isobaric properties   Saturation properties — pressure increments
    Isochoric properties    
  4. Please select the desired standard state convention:

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NIST, National Institute of Standards and Technology Material Measurement Laboratory Standard Reference
Data Program

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