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 Technical    Steam Conversion Table 

Steam Pressure Temperature Conversion Table for Saturated Steam

Conversion Tables for Saturated Steam and steam rated solenoid valves.



Pressure
Overpressure Absolute press.
Temperature
saturated
steam ts
°C
Thermal capa-
city water
h’
kJ/kg
Vaporization-
heat
r
kJ/kg
Thermal capa-
city steam
h”
kJ/kg
Steam
volume
"
m3/kg
Steam
density
"
kg/m3
Pe
bar
p
bar
The over-
pressure
relates to
an absolute
atmospheric
ambient)
pressure of
1.000 bar.
0,01
7,0
29,34
2485
2514
129,2
0,0077
0,05
32,9
137,8
2424
2562
28,19
0,0355
0,1
45,8
191,8
2393
2585
14,67
0,0681
0,2
60,1
251,5
2358
2610
7,650
0,1307
0,3
69,1
289,3
2336
2625
5,229
0,1912
0,4
75,9
317,7
2319
2637
3,993
0,2504
0,5
81,3
340,6
2305
2646
3,240
0,3086
0,6
86,0
359,9
2294
2654
2,732
0,3661
0,7
90,0
376,8
2283
2660
2,365
0,4229
 
0,8
93,5
391,7
2274
2666
2,087
0,4792
0,9
96,7
405,2
2266
2671
1,869
0,5350
0
1,0
99,6
417
2258
2675
1,694
0,5904
0,1
1,1
102,3
429
2251
2680
1,549
0,6455
0,2
1,2
104,8
439
2244
2683
1,428
0,7002
0,3
1,3
107,1
449
2238
2687
1,325
0,7547
0,4
1,4
109,3
458
2232
2690
1,236
0,8088
0,5
1,5
111,4
467
2226
2693
1,159
0,8628
0,6
1,6
113,3
475
2221
2696
1,091
0,9165
0,7
1,7
115,2
483
2216
2699
1,031
0,9700
0,8
1,8
116,9
491
2211
2702
0,977
1,023
0,9
1,9
118,6
498
2206
2704
0,929
1,076
1,0
2,0
120,2
505
2201
2706
0,885
1,129
1,5
2,5
127,4
535
2181
2716
0,718
1,392
2,0
3,0
133,5
561
2163
2724
0,606
1,651
2,5
3,5
138,9
584
2147
2731
0,524
1,908
3,0
4,0
143,6
605
2133
2738
0,462
2,163
3,5
4,5
147,9
623
2120
2743
0,414
2,417
4,0
5,0
151,8
640
2107
2747
0,375
2,669
4,5
5,5
155,5
656
2096
2752
0,343
2,920
5,0
6,0
158,8
670
2085
2755
0,316
3,170
6
7
165,0
697
2065
2762
0,2727
3,667
7
8
170,4
721
2046
2767
0,2403
4,162
8
9
175,4
743
2029
2772
0,2148
4,655
9
10
179,9
763
2013
2776
0,1943
5,147
10
11
184,1
781
1999
2780
0,1774
5,637
11
12
188,0
798
1984
2782
0,1632
6,127
12
13
191,6
815
1971
2786
0,1511
6,617
13
14
195,0
830
1958
2788
0,1407
7,106
14
15
198,3
845
1945
2790
0,1317
7,596
15
16
201,4
859
1933
2792
0,1237
8,085
16
17
204,3
872
1921
2793
0,1166
8,575
17
18
207,1
885
1910
2795
0,1103
9,065
18
19
209,8
897
1899
2796
0,1047
9,555
19
20
212,4
909
1888
2797
0,0995
10,05
20
21
214,9
920
1878
2798
0,0949
10,54
24
25
223,9
962
1839
2801
0,0799
12,51
25
26
226,0
972
1829
2801
0,0769
13,01
29
30
233,8
1008
1794
2802
0,0666
15,01
30
31
235,7
1017
1785
2802
0,0645
15,51
39
40
250,3
1087
1713
2800
0,0498
20,10

Connexion Steam Conversion Pressure to Temperature Tables

  
Absolute
pressure
(kPa, kN/m2)
Temperature
(oC)
Specific
Volume
(m3/kg)
Density
- ñ -
(kg/m3)
Specific Enthalpy of
Specific
Entropy
of Steam
- s -
(kJ/kgK)
Liquid
- hl -
(kJ/kg)
Evaporation
- he -
(kJ/kg)
Steam
- hs -
(kJ/kg)
0.8
3.8
160
0.00626
15.8
2493
2509
9.058
2.0
17.5
67.0
0.0149
73.5
2460
2534
8.725
5.0
32.9
28.2
0.0354
137.8
2424
2562
8.396
10.0
45.8
14.7
0.0682
191.8
2393
2585
8.151
20.0
60.1
7.65
0.131
251.5
2358
2610
7.909
28
67.5
5.58
0.179
282.7
2340
2623
7.793
35
72.7
4.53
0.221
304.3
2327
2632
7.717
45
78.7
3.58
0.279
329.6
2312
2642
7.631
55
83.7
2.96
0.338
350.6
2299
2650
7.562
65
88.0
2.53
0.395
368.6
2288
2657
7.506
75
91.8
2.22
0.450
384.5
2279
2663
7.457
85
95.2
1.97
0.507
398.6
2270
2668
7.415
95
98.2
1.78
0.563
411.5
2262
2673
7.377
100
99.6
1.69
0.590
417.5
2258
2675
7.360
101.33
100
1.67
0.598
419.1
2257
2676
7.355
110
102.3
1.55
0.646
428.8
2251
2680
7.328
130
107.1
1.33
0.755
449.2
2238
2687
7.271
150
111.4
1.16
0.863
467.1
2226
2698
7.223
170
115.2
1.03
0.970
483.2
2216
2699
7.181
190
118.6
0.929
1.08
497.8
2206
2704
7.144
220
123.3
0.810
1.23
517.6
2193
2711
7.095
260
128.7
0.693
1.44
540.9
2177
2718
7.039
280
131.2
0.646
1.55
551.4
2170
2722
7.014
320
135.8
0.570
1.75
570.9
2157
2728
6.969
360
139.9
0.510
1.96
588.5
2144
2733
6.930
400
143.1
0.462
2.16
604.7
2133
2738
6.894
440
147.1
0.423
2.36
619.6
2122
2742
6.862
480
150.3
0.389
2.57
633.5
2112
2746
6.833
500
151.8
0.375
2.67
640.1
2107
2748
6.819
550
155.5
0.342
2.92
655.8
2096
2752
6.787
600
158.8
0.315
3.175
670.4
2085
2756
6.758
650
162.0
0.292
3.425
684.1
2075
2759
6.730
700
165.0
0.273
3.66
697.1
2065
2762
6.705
750
167.8
0.255
3.915
709.3
2056
2765
6.682
800
170.4
0.240
4.16
720.9
2047
2768
6.660
850
172.9
0.229
4.41
732.0
2038
2770
6.639
900
175.4
0.215
4.65
742.6
2030
2772
6.619
950
177.7
0.204
4.90
752.8
2021
2774
6.601
1000
179.9
0.194
5.15
762.6
2014
2776
6.583
1050
182.0
0.186
5.39
772
2006
2778
6.566
1150
186.0
0.170
5.89
790
1991
2781
6.534
1250
189.8
0.157
6.38
807
1977
2784
6.505
1300
191.6
0.151
6.62
815
1971
2785
6.491
1500
198.3
0.132
7.59
845
1945
2790
6.441
1600
201.4
0.124
8.03
859
1933
2792
6.418
1800
207.1
0.110
9.07
885
1910
2795
6.375
2000
212.4
0.0995
10.01
909
1889
2797
6.337
2100
214.9
0.0945
10.54
920
1878
2798
6.319
2300
219.6
0.0868
11.52
942
1858
2800
6.285
2400
221.8
0.0832
12.02
952
1849
2800
6.269
2600
226.0
0.0769
13.01
972
1830
2801
6.239
2700
228.1
0.0740
13.52
981
1821
2802
6.224
2900
232.0
0.0689
14.52
1000
1803
2802
6.197
3000
233.8
0.0666
15.00
1008
1794
2802
6.184
3200
237.4
0.0624
16.02
1025
1779
2802
6.158
3400
240.9
0.0587
17.04
1042
1760
2802
6.134
3600
244.2
0.0554
18.06
1058
1744
2802
6.112
3800
247.3
0.0524
19.08
1073
1728
2801
6.090
4000
250.3
0.0497
20.09
1087
1713
2800
6.069
 
  Absolute Pressure = Gauge Pressure + Atmospheric pressure.

Specific enthalpy or Sensible Heat is the quantity of heat in 1 kg of water according to the selected temperature.

Example - Boiling Water at 100 oC and 0 bar

At atmospheric pressure - 0 bar gauge or absolute 101.33 kN/m2 - water boils at 100 oC. 419 kJ of energy is required to heat 1 kg of water from 0 oC to the saturation temperature 100 oC.

Therefore, at 0 bar gauge (absolute 101.33 kN/m2) and 100 oC - the specific enthalpy of water is 419 kJ/kg.

Another 2,257 kJ of energy is required to evaporate the 1 kg of water at 100 oC to steam at 100 oC. Therefore, at 0 bar gauge (absolute 101.33 kN/m2) - the specific enthalpy of evaporation is 2,257 kJ/kg.

The total specific enthalpy of the steam at atmospheric pressure and 100 oC can be summarized as:

hs = 419 + 2,257

    = 2,676 kJ/kg

Example - Boiling Water at 170 oC and 7 bar

Steam at atmospheric pressure is of limited practical use. It cannot be conveyed by its own pressure along a steam pipe to the points of consumption.

At 7 bar gauge (absolute 800 kN/m2) - the saturation temperature of water is 170 oC. More heat energy is required to raise the temperature to the saturation point at 7 bar gauge than needed for water at atmospheric pressure. From the table a value of 720.9 kJ is needed to raise 1 kg of water from 0 oC to the saturation temperature 170 oC.

The heat energy (enthalpy of evaporation) needed at 7 bar gauge to evaporate the water to steam is actually less than the heat energy required at atmospheric pressure. The specific enthalpy of evaporation decrease with steam pressure increase. The evaporation heat is 2,047 kJ/kg according the table.

Note! Because the specific volume of steam decreases with increasing pressure, the amount of heat energy transferred in the same volume actually increases with steam pressure. In other words the same pipe may transfer more energy with high pressure steam than with low pressure steam.

 Hope this helps rather than confuses.
The flow charts below relate to our SA series 2/2 way brass high temperature steam rated solenoid valves 2/2 way normally closed and 2/2 way normally open function in both direct acting and pressure assisted operation.
 
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