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)

Famous quotes containing the words water, steam, equilibrium and/or properties:

    “The Indian navigator naturally distinguishes by a name those parts of a stream where he has encountered quick water and forks, and again, the lakes and smooth water where he can rest his weary arms, since those are the most interesting and more arable parts to him.”
    —Henry David Thoreau (1817–1862)

    “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 (1902–1967)

    “That doctrine [of peace at any price] has done more mischief than any I can well recall that have been afloat in this country. It has occasioned more wars than any of the most ruthless conquerors. It has disturbed and nearly destroyed that political equilibrium so necessary to the liberties and the welfare of the world.”
    —Benjamin Disraeli (1804–1881)

    “The reason why men enter into society, is the preservation of their property; and the end why they choose and authorize a legislative, is, that there may be laws made, and rules set, as guards and fences to the properties of all the members of the society: to limit the power, and moderate the dominion, of every part and member of the society.”
    —John Locke (1632–1704)