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Saturation Properties for Hydrogen — Temperature Increments

The following adjustments were made to the specified data range:

Liquid Phase Data

Data on Saturation Curve

Temperature (K)Pressure (MPa)Density (mol/l)Volume (l/mol)Internal Energy (kJ/mol)Enthalpy (kJ/mol)Entropy (J/mol*K)Cv (J/mol*K)Cp (J/mol*K)Sound Spd. (m/s)Joule-Thomson (K/MPa)Viscosity (uPa*s)Therm. Cond. (W/m*K)Surf. Tension (N/m)Phase
26.0000.3939931.2910.0319580.125190.137785.549912.12729.204923.09-0.230948.81160.103060.0010475liquid
27.0000.4778930.4110.0328830.153070.168786.617112.26132.228878.37-0.0464018.20710.101470.00089212liquid
28.0000.5735929.4360.0339720.183210.202707.734012.40836.239829.280.173997.62960.0994310.00073837liquid
29.0000.6820528.3350.0352920.216220.240298.920912.58241.945774.750.447337.06720.0968910.00058656liquid
30.0000.8043227.0540.0369630.253090.2828210.21312.80850.970713.050.803746.50460.0937370.00043713liquid
31.0000.9416525.4880.0392340.295830.3327811.67913.14068.053641.201.30385.91680.0897350.00029082liquid
32.0001.095723.3570.0428140.349680.3965913.50313.730115.48552.872.10085.24630.0842640.00014903liquid
33.0001.269318.8900.0529390.448250.5154516.90215.519976.86423.523.97314.15640.0730971.6501e-05liquid

Vapor Phase Data

Data on Saturation Curve

Temperature (K)Pressure (MPa)Density (mol/l)Volume (l/mol)Internal Energy (kJ/mol)Enthalpy (kJ/mol)Entropy (J/mol*K)Cv (J/mol*K)Cp (J/mol*K)Sound Spd. (m/s)Joule-Thomson (K/MPa)Viscosity (uPa*s)Therm. Cond. (W/m*K)Phase
26.0000.393992.36490.422850.766950.9335536.15613.83333.470377.3213.5771.45840.024369vapor
27.0000.477892.87990.347240.763750.9296934.79914.07737.006378.7712.8751.53870.026075vapor
28.0000.573593.49670.285980.757820.9218633.41814.36341.939379.5412.1811.62680.028011vapor
29.0000.682054.24640.235500.748390.9090131.98014.70049.278379.6411.4761.72690.030269vapor
30.0000.804325.18110.193010.734150.8893930.43115.10861.334379.0610.7261.84780.033013vapor
31.0000.941656.40390.156160.712550.8596028.67315.61884.806377.799.87352.00930.036579vapor
32.0001.09578.18280.122210.677090.8109926.45316.294150.46375.778.77332.26840.041855vapor
33.0001.269312.2220.0818230.588410.6922622.25917.2121219.0373.936.63342.95180.054329vapor

Auxiliary Data

Reference States, Normal Boiling Point Convention

Additional fluid properties

References

Equation of state and auxiliary model

Leachman, J.W.; Jacobsen, R.T.; Lemmon, E.W., Fundamental Equations of State for Parahydrogen, Normal Hydrogen, and Orthohydrogen, to be published in J. Phys. Chem. Ref. Data, 2008. [all data]

Auxiliary model and surface tension

McCarty, R.D.; Hord, J.; Roder, H.M., Selected Properties of Hydrogen (Engineering Design Data), NBS Monograph 168, National Bureau of Standards, Boulder, CO, 1981, 0. [all data]

Thermal conductivity and dielectric constant

Kunz, O.; Klimeck, R.; Wagner, W.; Jaeschke, M., The GERG-2004 Wide-Range Reference Equation of State for Natural Gases and Other Mixtures, to be published as a GERG Technical Monograph, Fortschr.-Ber. VDI, VDI-Verlag, Düsseldorf, 2006. [all data]

Additional Information

Equation of state

The uncertainty in density is 0.1% at temperatures from the triple point to 250 K and at pressures up to 40 MPa, except in the critical region, where an uncertainty of 0.2% in pressure is generally attained. In the region between 250 and 450 K and at pressures from 0.1 to 300 MPa, the uncertainty in density is 0.04%. At temperatures between 450 and 1000 K, the uncertainty in density increases to 1%. At pressures between 300 and 2000 MPa, the uncertainty in density is 8%. Speed of sound data are represented within 0.5% below 100 MPa. The estimated uncertainty for heat capacities is 1.0%. The estimated uncertainties of vapor pressures and saturated liquid densities calculated using the Maxwell criterion are 0.2% for each property.

Thermal conductivity

The uncertainty in thermal conductivity below 100 K is estimated to be 3% below 150 atm and up to 10% below 700 atm. For temperatures around 100 K at low densities, the uncertainty is about 1%. Above 100 K, the uncertainty is estimated to be on the order of 10%.

Viscosity

The uncertainty in viscosity ranges from 4% to 15%.

The fluid data above is also available from the NIST Reference Fluid Thermodynamic and Transport Properties Database. This product includes additional features not available from this web site.

Notes