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Thermodynamics and Geothermal Systems 45

Table 3.3
Temperature, pressure, and enthalpy of coexisting steam and Vapor along
the liquid Vapor saturation curve
o
Temperature ( c) pressure (bars) enthalpy (J/gm) Vapor enthalpy (J/gm) liquid
20 0.02 2538 83.96
25 0.03 2547 104.9
30 0.04 2556 125.8
35 0.06 2565 146.7
40 0.07 2574 167.6
45 0.10 2583 188.4
50 0.12 2592 209.3
55 0.16 2601 230.2
60 0.20 2610 251.1
65 0.25 2618 272.0
70 0.31 2627 293.0
75 0.39 2635 313.9
80 0.47 2644 334.9
85 0.58 2652 355.9
90 0.70 2860 376.9
95 0.85 2668 398.0
100 1.01 2676 419.0
110 1.43 2691 461.3
120 1.99 2706 503.7
130 2.70 2720 546.3
140 3.61 2734 589.1
150 4.76 2746 632.2
160 6.18 2758 675.5
170 7.92 2769 719.2
180 10.02 2778 763.2
190 12.54 2786 807.6
200 15.54 2793 852.4
210 19.06 2798 897.8
220 23.18 2802 943.6
230 27.95 2804 990.1
240 33.44 2804 1037
250 39.73 2802 1085
260 46.89 2797 1134
270 54.99 2790 1185
280 64.12 2780 1236
290 74.36 2766 1289
300 85.81 2749 1344
310 98.56 2727 1401
320 112.7 2700 1461
330 128.4 2666 1525
340 145.8 2622 1594
350 165.1 2564 1671
Source: Keenan, J. H., Keyes, F. G., Hill, P. G., and Moore, J. G., Steam Tables: Thermodynamic Properties
of Water Including Vapor, Liquid and Solid Phases (International Edition—Metric Units), New
York: John Wiley and Sons, Inc., 1969.