Thermophysical Properties: Water

From Thermal-FluidsPedia

(Difference between revisions)
Jump to: navigation, search
 
Line 31: Line 31:
|| Property<sub>a</sub>  || Temp.  || α<sub>0</sub> || α<sub>1</sub> || α<sub>2</sub> || α<sub>3</sub> || α<sub>4</sub> || α<sub>5</sub> || Error(%)
|| Property<sub>a</sub>  || Temp.  || α<sub>0</sub> || α<sub>1</sub> || α<sub>2</sub> || α<sub>3</sub> || α<sub>4</sub> || α<sub>5</sub> || Error(%)
|-  
|-  
-
|| p<sub>v</sub> (10<sup>5</sup>Pa) || 20–  200 ˚C || -5.0945 || 7.2280 || -2.8625-4 b || 9.2341-7 || -2.0295-9 || 2.1645-12 || 0.01
+
|| p<sub>v</sub> (10<sup>5</sup>Pa) || 20–  200 ˚C || -5.0945 || 7.2280-2 || -2.8625-4 b || 9.2341-7 || -2.0295-9 || 2.1645-12 || 0.01
|-  
|-  
|| h<sub>lv</sub> (kJ/kg) || 20–  200 ˚C || 7.8201 || -5.8906-4 || -9.1355-6 || 8.4738-8 || -3.9635-10 || 5.9150-13 || 0.05
|| h<sub>lv</sub> (kJ/kg) || 20–  200 ˚C || 7.8201 || -5.8906-4 || -9.1355-6 || 8.4738-8 || -3.9635-10 || 5.9150-13 || 0.05

Current revision as of 15:54, 3 October 2012

Water, H2O, Molecular Mass: 18.0, (Tsat = 100 °C; Tm = 0.0 °C)
T Temp. °C pv saturation pressure (105 Pa) hlv latent heat (kJ/kg) ρ liquid density (kg/m³) ρv vapor density (kg/m³) μ liquid viscosity (10-7 N-s/m²) μv vapor viscosity (10-7 N-s/m²) k liquid thermal conductivity (W/m-K) kv vapor thermal conductivity a (W/m-K) σ liquid surface tension (10-3/m) cp,ℓ liquid specific heat a (kJ/kg-K) cp,v vapor specific heat a (kJ/kg-K)
20 0.023368 2453.8 999.0 0.01729 10015 88.5 0.602 0.0188 72.88 4.182 1.874
40 0.073749 2406.5 993.05 0.05110 6513 96.6 0.630 0.0201 69.48 4.179 1.894
60 0.199190 2358.4 983.28 0.13020 4630 105.0 0.653 0.0216 66.07 4.185 1.924
80 0.473590 2308.9 971.82 0.29320 3510 113.0 0.669 0.0231 62.69 4.197 1.969
100 1.013250 2251.2 958.77 0.59740 2790 121.0 0.680 0.0248 58.91 4.216 2.034
120 1.985400 2202.9 943.39 1.12100 2300 128.0 0.685 0.0267 54.96 4.245 2.124
140 3.613600 2144.9 925.93 1.96560 1950 135.0 0.687 0.0288 50.79 4.285 2.245
160 6.180400 2082.2 907.44 3.25890 1690 142.0 0.684 0.0313 46.51 4.339 2.406
180 10.02700 2014.0 887.31 5.15970 1493 149.0 0.676 0.0341 42.19 4.408 2.615
200 15.55100 1939.0 865.05 7.86530 1338 156.0 0.664 0.0375 37.77 4.497 2.883


Propertya Temp. α0 α1 α2 α3 α4 α5 Error(%)
pv (105Pa) 20– 200 ˚C -5.0945 7.2280-2 -2.8625-4 b 9.2341-7 -2.0295-9 2.1645-12 0.01
hlv (kJ/kg) 20– 200 ˚C 7.8201 -5.8906-4 -9.1355-6 8.4738-8 -3.9635-10 5.9150-13 0.05
ρ (kg/m³) 20– 200 ˚C 6.9094 -2.0146-5 -5.9868-6 2.5921-8 -9.3244-11 1.2103-13 0.02
ρv (kg/m³) 20– 200 ˚C -5.3225 6.8366-2 -2.7243-4 8.4522-7 -1.6558-9 1.5514-12 0.01
μ (10-7Ns/m²) 20– 200 ˚C 9.7620 -3.1154-2 2.0029-4 -9.5815-7 2.7772-9 -3.5075-12 0.02
μv (10-7 Ns/m²) 20– 200 ˚C 4.3995 3.8789-3 2.1181-5 -3.4406-7 1.6730-9 -2.8030-12 0.04
k (W/m-K) 20– 200 ˚C -5.6528-1 3.1743-3 -1.4392-5 -1.3224-8 2.5534-10 -6.4454-13 0.04
kv (W/m-K) 20– 200 ˚C -4.0406 3.2288-3 5.3383-6 -6.7139-8 4.0967-10 -6.9579-13 0.07
σ (10-3N/m) 20– 200 ˚C 4.3438 -3.0664-3 2.0743-5 -2.5499-7 1.0377-9 -1.7156-12 0.03
cp,ℓ (kJ/kg-K) 20– 200 ˚C 1.4338 -2.2638-4 4.2819-6 -2.7411-8 1.4699-10 -2.2589-13 0.01
cp,v (kJ/kg-K) 20– 200 ˚C 6.2084-1 3.1420-4 1.6110-6 4.0156-8 3.4841-11 -2.0709-13 0.01

Polynomial function: ln(Property) = α0 + α1T + α2T2 + α3T3 + α4T4 + α5T5

References

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.

Further Reading

External Links