蒸汽加热水计算

蒸汽加热水计算

计算加热一定量的水，需蒸汽多少吨。（直接加热）例：加热1 吨的常温水至80 度，需多少吨0.5MPa 的蒸汽查蒸汽的数据：0.5MPa 蒸汽焓2762.9 kJ/kg 。

X×1000× 2762.9 ＋X×1000×4.2 ×（100－80）＝1000×4.2 ×（80－20）X ＝0.0885 吨

蒸汽的热损失按20%计。则需蒸汽0.1062 吨

饱和水蒸汽表（按温度排列）

温度绝对压力蒸汽比

容

焓汽化热

℃kPa m3/kg

0 0.61 206.5

2491.3

5 0.87 147.1

2480. 0

10 1.23 106.4

2468.6

15 1.71 77.9

2457. 8

20 2.33 57.8

2446. 3

25 3.17 43.4

2433.9

30 4.25 32.93

2423.7

35 5.62 25.25

2412.6

40 7.37 19.55

2401.1

45 9.58 15.28

2389.5

50 14.98 12.054

2378.1

55 15.74 9.589

2366.5

60 19.92 7.687

2355.1

65 25.01 6.209

2343.4

70 31.16 5.052

2331.2

75 38.50 4.139

蒸汽密度液体焓蒸汽

kg/m3 kJ/kg kJ/kg kJ/kg 0.0048 0.00 2491.3

0.0068 20.94 2500.9

0.0094 41.87 2510.5

0.0128 62.81 2520.6

0.0172 83.74 2530.1

0.0230 104.68 2538.6

0.0304 125.60 2549.5

0.0396 146.55 2559.1

0.0511 167.47 2568.7

0.0654 188.42 2577.9

0.0830 209.34 2587.6

0.1043 230.29 2596.8

0.1301 251.21 2606.3

0.1611 272.16 2615.6

0.1979 293.08 2624.4

0.2416 314.03 2629.7

2315.7

80 47.40 3.414 0.2929 334.94 2642.4

2307.3

85 57.90 2.832 0.3531 355.90 2651.2

2295.3

70.10 2.365 0.4229 376.81 2660.0

90

2283.1

95 84.50 1.985 0.5039 397.77 2668.8

2271.0

101.30 1.675 0.5970 418.68 2677.2 100

2258.4

120.80 1.421 0.7036 439.64 2685.1 105

2245.5

143.30 1.212 0.8254 460.97 2693.5 110

2232.4

170.00 1.038 0.9635 481.51 2702.5 115

2221.0

198.60 0.893 1.1199 503.67 2708.9 120

2205.2

232.10 0.7715 1.2960 523.38 2716.5 125

2193.1

270.20 0.6693 1.4940 546.38 2723.9 130

2177.6

313.00 0.5831 1.7150 565.25 2731.2 135

2166.0

361.40 0.5096 1.9620 589.08 2737.8 140

2148.7

415.60 0.4469 2.2380 607.12 2744.6 145

2137.5

476.10 0.3933 2.5430 632.21 2750.7 150

2118.5

618.10 0.3075 3.2520 675.75 2762.9 160

2087.1

792.40 0.2431 4.1130 719.29 2773.3 170

2054.0

180 1003.00 0.1944 5.1450 763.25 2782.6 2019.3

190 1255.00 0.1568 6.3780 807.63 2790.1 1982.5

200 1554.00 0.1276 7.8400 852.01 2795.5 1943.5

210 1917.00 0.1045 9.5690 897.23 2799.3 1902.1

220 2320.00 0.0862 11.6000 942.45 2801.0

1858.5

2797.00 0.07155 13.9800 988.50

1811.6

3347.00 0.05967 16.7600 1034.56

1762.2

3976.00 0.04998 20.0100 1081.45 1708.6

4693.00 0.04199 23.8200 1128.76 1652.1

5503.00 0.03538 28.2700 1176.91 1591.4

6220.00 0.02988 33.4700 1225.48 1526.5

7442.00 0.02525 39.6000 1274.46 1457.8

8591.00 0.02131 46.9300 1325.54 1382.5

9876.00 0.01799 55.5900 1378.71 1301.3

11300.00 0.01516 65.9500 1436.07 1212.1

12880.00 0.01273 78.5300 1446.78 1113.7

14510.00 0.01064 93.9800 1562.93

1005.7

16530.00 0.00884 113.2000 1632.20 880.5 2800.1 2796.8 2790.1 2780.9 2760.3 2752.0 2732.3 2708.0 2680.0

2648.2

2610.5

2568.6

2516.7

230 240 250 260 270 280 290 300 310 320 330 340 350