Thermophysical Properties: Nitrogen
From Thermal-FluidsPedia
Nitrogen, N2, Molecular Mass: 28.0, (Tsat= -195.65 °C; Tm = 209.85 °C) T Temp. K pv saturation pressure (105 Pa) hlv latent heat (kJ/kg) ρℓ liquid density (103 kg/m³) ρv vapor density (103 kg/m³) μℓ liquid viscosity (10-5 N-s/m²) μv vapor viscosity (10-7 N-s/m²) kℓ liquid thermal conductivity (W/m-K) kv vapor thermal conductivity a (W/m-K) σ liquid surface tension (10-3 N/m) cp,ℓ liquid specific heat (kJ/kg-K) cp,v vapor specific heat a (kJ/kg-K) 70 0.3859 205.7 0.838 0.0019 2010 48.00 0.1420 0.0066 10.53 1.935 1.08 80 1.3690 194.5 0.790 0.0060 1390 55.20 0.1280 0.0077 8.27 1.964 1.14 90 3.6000 180.5 0.746 0.0150 1160 62.00 0.1120 0.0091 6.16 2.028 1.26 100 7.7750 162.2 0.691 0.0320 810 68.80 0.0955 0.0111 4.00 2.176 1.47 110 14.6700 137.0 0.626 0.0620 740 75.60 0.0802 0.0138 2.00 2.566 1.97 120 25.1500 95.7 0.528 0.1245 640 82.10 0.0628 0.0195 0.20 4.14
Propertya Temp. α0 α1 α2 α3 α4 α5 Error(%) pv (105Pa) 70–120 K -43.782 1.5669 -2.3774-2b 1.9698-4 -8.5268-7 1.5176-9 0.49 hlv (kJ/kg) 70–120 K 40.773 -2.0285 4.6388-2 -5.2896-4 3.0054-6 -6.8292-9 0.22 ρℓ (103kg/m³) 70–120 K 35.567 -1.9499 4.2463-2 -4.6083-4 2.4889-6 -5.3639-9 0.22 ρv (103 kg/m³) 70–120 K -67.907 2.8270 -5.5599-2 5.8348-4 -3.1442-6 6.8695-9 0.08 μℓ (10-5Ns/m²) 70–120 K 948.70 -51.222 1.1060 -1.1838-2 6.2780-5 -1.3198-7 4.14 μv (10-7 Ns/m²) 70–120 K -2.9587 2.9150-1 -5.1900-3 4.8252-5 -2.2449-7 4.1366-10 0.03 kℓ (W/m-K) 70–120 K 32.320 -1.9406 4.3870-2 -4.9230-4 2.7304-6 -6.0054-9 0.50 kv (W/m-K) 70–120 K -84.477 4.4031 -9.7414-2 1.0725-3 -5.8607-6 1.2734-8 3.35 σ (10-3N/m) 70–120 K 548.30 -31.026 7.0194-1 -7.9006-3 4.4236-5 -9.8671-8 0.57 cp,ℓ (kJ/kg-K) 70–110 K 6.5809 -2.9472-1 5.5008-3 -4.5869-5 1.4529-7 0.0 0.05 cp,v c (kJ/kg-K) 70–120 K -431.10 24.938 -5.7258-1 6.5396-3 -3.7167-5 8.4167-8 0.10
a Polynomial function: ln(Property) = α0 + α1T + α2T2 + α3T3 + α4T4 + α5T5
b The notation 2.3774-2 signifies 2.3774×10-2
c Polynomial Function: Property = α0 + α1T + α2T2 + α3T3 + α4T4 + α5T5
References
American Society of Heating, Refrigerating and Air Conditioning Engineers, 2001, ASHRAE Handbook of Fundamentals, ASHRAE, New York, NY.
Faghri, A., and Zhang, Y., 2006, Transport Phenomena in Multiphase Systems, Elsevier, Burlington, MA.
Faghri Amir , Zhang Yuwen , Howell John, 2010, Advanced Heat and Mass Transfer, Global Digital Press, Columbia, MO
Vargaftik, N.B., 1975, Handbook of Physical Properties of Liquids and Gases, Hemisphere, New York, NY.