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Saturation Properties for Hydrogen — Pressure Increments

Liquid Phase Data

Data on Saturation Curve

Temperature (K)Pressure (atm)Density (kg/m3)Volume (m3/kg)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 (F/atm)Viscosity (uPa*s)Therm. Cond. (W/m*K)Surf. Tension (N/m)Phase
18.2320.5000073.1450.013672-0.042084-0.040687-2.034611.11917.5101174.6-0.2133415.9950.0993520.0022936liquid
18.7550.6000072.6080.013773-0.032870-0.031182-1.535711.19418.0101161.7-0.2038615.2580.100780.0022079liquid
19.2190.7000072.1200.013866-0.024511-0.022529-1.094811.25918.4711149.9-0.1953914.6550.101850.0021323liquid
19.6360.8000071.6690.013953-0.016810-0.014530-0.6977511.31518.9021138.9-0.1876814.1450.102680.0020643liquid
20.0170.9000071.2480.014036-0.0096324-0.0070521-0.3350011.36619.3101128.6-0.1805613.7060.103320.0020023liquid
20.3691.000070.8500.014114-0.00288301.1116e-125.4758e-1111.41219.7001118.9-0.1739113.3200.103820.0019452liquid
20.6961.100070.4730.0141900.00350830.00669660.3120711.45420.0761109.6-0.1676312.9760.104220.0018922liquid
21.0031.200070.1140.0142630.00959520.0130910.6048311.49420.4391100.7-0.1616712.6670.104540.0018426liquid
21.2911.300069.7690.0143330.0154200.0192260.8811111.53120.7931092.1-0.1559712.3870.104780.0017960liquid
21.5651.400069.4360.0144020.0210150.0251331.143111.56621.1391083.8-0.1505012.1300.104970.0017519liquid
21.8241.500069.1150.0144690.0264090.0308421.392611.59921.4791075.8-0.1452211.8930.105120.0017101liquid

Vapor Phase Data

Data on Saturation Curve

Temperature (K)Pressure (atm)Density (kg/m3)Volume (m3/kg)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 (F/atm)Viscosity (uPa*s)Therm. Cond. (W/m*K)Phase
18.2320.500000.716551.39560.734880.8774248.32312.85522.846342.923.78730.949090.014885vapor
18.7550.600000.842801.18650.739280.8847047.29812.88623.138346.503.66470.980710.015409vapor
19.2190.700000.967131.03400.742970.8908146.42912.91523.423349.523.56321.00870.015879vapor
19.6360.800001.09000.917470.746120.8960445.67512.94423.706352.123.47661.03400.016310vapor
20.0170.900001.21160.825380.748840.9005845.00712.97223.985354.403.40101.05710.016710vapor
20.3691.00001.33220.750630.751220.9045544.40813.00024.264356.423.33391.07860.017085vapor
20.6961.10001.45210.688680.753320.9080643.86413.02924.543358.223.27361.09880.017440vapor
21.0031.20001.57130.636430.755170.9111743.36513.05724.821359.843.21871.11770.017778vapor
21.2911.30001.69000.591730.756820.9139542.90413.08525.101361.323.16841.13580.018101vapor
21.5651.40001.80820.553030.758290.9164442.47513.11325.381362.663.12191.15290.018412vapor
21.8241.50001.92620.519160.759600.9186742.07313.14225.663363.893.07871.16940.018711vapor

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