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)
Famous quotes containing the words water, steam, equilibrium and/or properties:
“Rock of ages, cleft for me,
Let me hide myself in Thee!
Let the Water and the Blood,
From thy riven Side which flowd,
Be of sin the double cure;
Cleanse me from its guilt and powr.”
—Augustus Montague Toplady (17401778)
“Clean the spittoons.
The steam in hotel kitchens,
And the smoke in hotel lobbies,
And the slime in hotel spittoons:
Part of my life.”
—Langston Hughes (19021967)
“They who feel cannot keep their minds in the equilibrium of a pair of scales: fear and hope have no equiponderant weights.”
—Horace Walpole (17171797)
“A drop of water has the properties of the sea, but cannot exhibit a storm. There is beauty of a concert, as well as of a flute; strength of a host, as well as of a hero.”
—Ralph Waldo Emerson (18031882)