NITROGEN (N₂) DATA:

Boiling Point

77.35 Kelvin (-320.44 ^oF) @ 1 Atm.

Liquid Density @ 77.35 K @ 1 Atm.

50.35 lbs./ft.³

806.5 kg/m³

Gas Density @ 70 ^oF @ 1 Atm.

0.07244 lbs./ft.³

1.16 kg/m³

Gas Density @ 32 ^oF @ 1 Atm.

0.07806 lbs./ft.³

1.25 kg/m³

Gas Density @ 77.35 K @ 1 Atm.

0.2885 lbs./ft.³

4.622 kg/m³

Latent Heat of LN₂ @ 77.35 K

198.8 J/g

Liquid to Gas Ratio

1 liter LN₂ = 24.54 ft.³ N₂ @ stp*
*( stp was calculated using 70 ^oF )

References:
1. Calculations were made using EES (Engineering Equation Solver) V.6.294, UW-Madison by S. A. Klein and F. L. Alvarado.
2. Nitrogen calculations were made using data from: "Thermodynamic Properties of Nitrogen from the Freezing Line to 2000 K at Pressures to 1000 MPa" by R.T. Jacobsen, R.B. Stewart, and M. Jahangiri; J. Phys, Chem, Ref. Data, Vol. 15, No. 2, 1986.

HELIUM (He⁴) DATA:

Boiling Point

4.214 Kelvin (-452.1 ^oF) @ 1 Atm.

Liquid Density @ 4.214 K

7.808 lbs./ft.³

125.1 kg/m³

Gas Density @ 70 ^oF @ 1 Atm.

0.01034 lbs./ft.³

0.1657 kg/m³

Gas Density @ 32 ^oF @ 1 Atm.

0.01114 lbs./ft.³

0.1785 kg/m³

Gas Density @ 4.214 K @ 1 Atm.

1.045 lbs./ft.³

16.74 kg/m³

Latent Heat of LHe @ 4.214 K

20.75 J/g

Liquid to Gas Ratio

1 Liter LHe = 26.67 ft.³ He @ stp*
*( stp was calculated using 70 ^oF )

References:
1.) Calculations were made using EES (Engineering Equation Solver) V.6.294, UW-Madison by S. A. Klein and F. L. Alvarado.
2.) Helium calculations were made using data from: "A New Wide Range Equation of State for Helium" by R.D. McCarty and V.D. Arp; Advances in Cryogenic Engineering, Vol. 35, pp. 1465-1475, 1990.

LN2/LHe FACILITY
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Last Updated: 08/17/12

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