所有蒸汽特性都是相互关联的。 从任何一个已知的值,可以确定其他任何值。 这些关系都显示在“饱和蒸汽特性数据表”中,或简称“蒸汽特性表”。
对于任何给定压力,您可以读取:
- 蒸汽温度
- 饱和液体的热量
- 蒸汽的潜热
- 蒸汽的总热量
- 饱和液体的比容
- 饱和蒸汽的比容。
如果您知道您需要 307 华氏度的温度,该表会告诉您,您需要将系统加压至 60 psig。 如果供汽压力为 0.1034 MPa/15 psi,该表会告诉您,有 945 BTU/lb 的热能可用于工作。
饱和蒸汽属性
(摘自 Keenan 和 Keyes 的著作,“蒸汽的热力学特性”,经 John Wiley & Sons, Inc. 许可)
表压 (PSIG) | 绝对压力 (PSIA) | 蒸汽温度 (℉) | 饱和液体热量 (BTU/LB) | 潜热 (BTU/LB) | 蒸汽的总热量 (BTU/LB) | 饱和液体比容 (CU FT/LB | 饱和蒸汽比容 (CU FT/LB) |
29.743 | 0.08854 | 32.00 | 0.00 | 1075.8 | 1075.8 | 0.096022 | 3306.00 |
29.515 | 0.2 | 53.14 | 21.21 | 1063.8 | 1085.0 | 0.016027 | 1526.00 |
27.886 | 1.0 | 101.74 | 69.70 | 1036.3 | 1106.0 | 0.016136 | 333.60 |
19.742 | 5.0 | 162.24 | 130.13 | 1001.0 | 1131.1 | 0.016407 | 73.52 |
9.562 | 10.0 | 193.21 | 161.17 | 982.1 | 1143.3 | 0.016590 | 38.42 |
7.536 | 11.0 | 197.75 | 165.73 | 979.3 | 1145.0 | 0.016620 | 35.14 |
5.490 | 12.0 | 201.96 | 169.96 | 976.6 | 1146.6 | 0.016647 | 32.40 |
3.454 | 13.0 | 205.88 | 173.91 | 974.2 | 1148.1 | 0.016674 | 30.06 |
1.418 | 14.0 | 209.56 | 177.61 | 971.9 | 1149.5 | 0.016699 | 28.04 |
0.0 | 14.696 | 212.00 | 180.07 | 970.3 | 1150.4 | 0.016715 | 26.80 |
1.3 | 16.0 | 216.32 | 184.42 | 967.6 | 1152.0 | 0.016746 | 24.75 |
2.3 | 17.0 | 219.44 | 187.56 | 965.5 | 1153.1 | 0.016768 | 23.39 |
5.3 | 20.0 | 227.96 | 196.16 | 960.1 | 1156.3 | 0.016830 | 20.09 |
10.3 | 25.0 | 240.07 | 208.42 | 952.1 | 1160.6 | 0.016922 | 16.30 |
15.3 | 30.0 | 250.33 | 218.82 | 945.3 | 1164.1 | 0.017004 | 13.75 |
20.3 | 35.0 | 259.28 | 227.91 | 939.2 | 1167.1 | 0.017078 | 11.90 |
25.3 | 40.0 | 267.25 | 236.03 | 933.7 | 1169.7 | 0.017146 | 10.50 |
30.3 | 45.0 | 274.44 | 243.36 | 928.6 | 1172.0 | 0.017209 | 9.40 |
40.3 | 55.0 | 287.07 | 256.30 | 919.6 | 1175.9 | 0.017325 | 7.79 |
50.3 | 65.0 | 297.97 | 267.50 | 911.6 | 1179.1 | 0.017429 | 6.66 |
60.3 | 75.0 | 307.60 | 277.43 | 904.5 | 1181.9 | 0.017524 | 5.82 |
70.3 | 85.0 | 316.25 | 286.39 | 897.8 | 1184.2 | 0.017613 | 5.17 |
80.3 | 95.0 | 324.12 | 294.56 | 891.7 | 1186.2 | 0.017696 | 4.65 |
90.3 | 105.0 | 331.36 | 302.10 | 886.0 | 1188.1 | 0.017775 | 4.23 |
100.0 | 114.7 | 337.90 | 308.80 | 880.0 | 1188.8 | 0.017850 | 3.88 |
110.3 | 125.0 | 344.33 | 315.68 | 875.4 | 1191.1 | 0.017922 | 3.59 |
120.3 | 135.0 | 350.21 | 321.85 | 870.6 | 1192.4 | 0.017991 | 3.33 |
125.3 | 140.0 | 353.02 | 324.82 | 868.2 | 1193.0 | 0.018024 | 3.22 |
130.3 | 145.0 | 355.76 | 327.70 | 865.8 | 1193.5 | 0.018057 | 3.11 |
140.3 | 155.0 | 360.50 | 333.24 | 861.3 | 1194.6 | 0.018121 | 2.92 |
150.3 | 165.0 | 365.99 | 338.53 | 857.1 | 1195.6 | 0.018183 | 2.75 |
160.3 | 175.0 | 370.75 | 343.57 | 852.8 | 1196.5 | 0.018244 | 2.60 |
180.3 | 195.0 | 379.67 | 353.10 | 844.9 | 1198.0 | 0.018360 | 2.34 |
200.3 | 215.0 | 387.89 | 361.91 | 837.4 | 1199.3 | 0.018470 | 2.13 |
225.3 | 240.0 | 397.37 | 372.12 | 828.5 | 1200.6 | 0.018602 | 1.92 |
250.3 | 265.0 | 406.11 | 381.60 | 820.1 | 1201.7 | 0.018728 | 1.74 |
300.0 | 417.33 | 393.84 | 809.0 | 1202.8 | 0.018896 | 1.54 | |
400.0 | 444.59 | 424.00 | 780.5 | 1204.5 | 0.019340 | 1.16 | |
450.0 | 456.28 | 437.20 | 767.4 | 1204.6 | 0.019547 | 1.03 |