Water (data Page) - Water/steam Equilibrium Properties

Water/steam Equilibrium Properties

Vapor pressure formula for steam in equilibrium with liquid water:

log10(P) = A − B / (T – C)

where P is equilibrium vapor pressure in kPa, and T is temperature in kelvins.

for T = 273 K to 333 K: A = 7.2326; B = 1750.286; C = 38.1

for T = 333 K to 423 K: A = 7.0917; B = 1668.21; C = 45.1

Steam table
Temp. Pressure H of liquid ΔvapH ΔvapW ρ of vapor
0 °C 0.612 kPa 0.00 J/g 2496.5 J/g 126.0 J/g 0.004845 kg/m3
10 °C 1.227 kPa 42.0 J/g 2473.5 J/g 130.5 J/g 0.009398 kg/m3
20 °C 2.536 kPa 83.8 J/g 2450.9 J/g 135.1 J/g 0.01728 kg/m3
30 °C 4.242 kPa 125.6 J/g 2427.9 J/g 139.7 J/g 0.03036 kg/m3
40 °C 7.370 kPa 167.2 J/g 2404.9 J/g 144.2 J/g 0.05107 kg/m3
50 °C 12.33 kPa 209.0 J/g 2381.4 J/g 148.7 J/g 0.08285 kg/m3
60 °C 19.90 kPa 250.8 J/g 2357.6 J/g 153.0 J/g 0.1300 kg/m3
70 °C 31.15 kPa 292.7 J/g 2332.9 J/g 157.3 J/g 0.1979 kg/m3
80 °C 46.12 kPa 334.6 J/g 2307.7 J/g 161.5 J/g 0.2931 kg/m3
90 °C 70.10 kPa 376.6 J/g 2282.6 J/g 165.5 J/g 0.4232 kg/m3
100 °C 101.32 kPa 419.0 J/g 2256.3 J/g 169.4 J/g 0.5974 kg/m3
110 °C 143.27 kPa 460.8 J/g 2229.5 J/g 173.1 J/g 0.8264 kg/m3
120 °C 198.50 kPa 503.2 J/g 2201.4 J/g 176.7 J/g 1.121 kg/m3
130 °C 270.13 kPa 545.8 J/g 2172.5 J/g 180.2 J/g 1.497 kg/m3
140 °C 361.4 kPa 588.5 J/g 2142.8 J/g 183.2 J/g 1.967 kg/m3
150 °C 476.0 kPa 631.5 J/g 2111.8 J/g 186.1 J/g 2.548 kg/m3
160 °C 618.1 kPa 674.7 J/g 2080.0 J/g 188.7 J/g 3.263 kg/m3
170 °C 792.0 kPa 718.5 J/g 2047.0 J/g 190.6 J/g 4.023 kg/m3
180 °C 1002.7 kPa 762.5 J/g 2012.2 J/g 192.8 J/g 5.165 kg/m3
190 °C 1254.9 kPa 807.0 J/g 1975.8 J/g 194.5 J/g 6.402 kg/m3
200 °C 1554.3 kPa 851.9 J/g 1937.3 J/g 195.6 J/g 7.868 kg/m3
210 °C 1907.9 kPa 897.5 J/g 1897.5 J/g 196.3 J/g 9.606 kg/m3
221.1 °C 2369.8 kPa 948.5 J/g 1850.2 J/g 196.6 J/g 11.88 kg/m3
229.4 °C 2769.6 kPa 987.9 J/g 1812.5 J/g 196.2 J/g 13.87 kg/m3
240.6 °C 3381.1 kPa 1040.6 J/g 1759.4 J/g 195.1 J/g 16.96 kg/m3
248.9 °C 3904.1 kPa 1080.3 J/g 1715.8 J/g 193.7 J/g 19.66 kg/m3
260.0 °C 4695.9 kPa 1134.8 J/g 1653.9 J/g 190.8 J/g 23.84 kg/m3
271.1 °C 5603.4 kPa 1195.9 J/g 1586.5 J/g 186.9 J/g 28.83 kg/m3
279.4 °C 6366.5 kPa 1240.7 J/g 1532.5 J/g 183.3 J/g 33.18 kg/m3
290.6 °C 7506.2 kPa 1302.3 J/g 1456.3 J/g 177.4 J/g 39.95 kg/m3
298.9 °C 8463.9 kPa 1350.0 J/g 1394.8 J/g 172.2 J/g 45.93 kg/m3
310.0 °C 9878.0 kPa 1415.7 J/g 1307.7 J/g 164.2 J/g 55.25 kg/m3
321.1 °C 11461 kPa 1483.9 J/g 1212.7 J/g 154.5 J/g 66.58 kg/m3
329.4 °C 12785 kPa 1537.9 J/g 1133.2 J/g 145.6 J/g 76.92 kg/m3
340.6 °C 14727 kPa 1617.9 J/g 1007.6 J/g 130.9 J/g 94.25 kg/m3
348.9 °C 16331 kPa 1687.0 J/g 892.0 J/g 117.0 J/g 111.5 kg/m3
360.0 °C 18682 kPa 1797.0 J/g 694.0 J/g 91.0 J/g 145.3 kg/m3
371.1 °C 21349 kPa 1968.3 J/g 365.0 J/g 47.0 J/g 214.5 kg/m3
374.4 °C 22242 kPa 2151.2 J/g 0 J/g 0 J/g 306.8 kg/m3
Temp. Pressure H of liquid ΔvapH ΔvapW ρ of vapor


Data in the table above is given for water-steam equilibria at various temperatures over the entire temperature range at which liquid water can exist. Pressure of the equilibrium is given in the second column in kPa. The third column is the heat content of each gram of the liquid phase relative to water at 0 °C. The fourth column is the heat of vaporization of each gram of liquid that changes to vapor. The fifth column is the PV work done by each gram of liquid that changes to vapor. The sixth column is the density of the vapor.

Read more about this topic:  Water (data Page)

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