水蒸气定压比热容演示教学.doc

水蒸气定压比热容

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Water Vapor - H2O
Temperature
- T -
(K)
Specific heat capacity
- cp -
(kJ/kgK)（平均比热）
0
1.865参考
175
1.850
200
1.851
225
1.852
250
1.855
275
1.859
300
1.864
325
1.871
350
1.880
375
1.890
400
1.901
450
1.926
500
1.954
550
1.984
600
2.015
650
2.047
700
2.080
750
2.113
800
2.147
850
2.182
900
2.217
950
2.252
1000
2.288
1050
2.323
1100
2.358
1150
2.392
1200
2.425
1250
2.458
1300
2.490
1350
2.521
1400
2.552
1500
2.609
1600
2.662
1700
2.711
1800
2.756
1900
2.798
2000
2.836
2100
2.872
2200
2.904
2300
2.934
2400
2.962
2500
2.987
2600
3.011
2700
3.033
2800
3.053
2900
3.072
3000
3.090
3500
3.163
4000
3.217
4500
3.258
5000
3.292
5500
3.322
6000
3.350

Thermal properties of water:
Temperature
- t -
Absolute pressure
- p -
Density
- ρ -
Specific volume
- v -
Specific Heat
- cp -
Specific entropy
- e -
(oC)
(kN/m2)
(kg/m3)
10-3 (m3/kg)
(kJ/kgK)
(kJ/kgK)
0
(Ice)

916.8

0.01
0.6
999.8
1.00
4.210
0
4
(maximum density)
0.9
1000.0

5
0.9
1000.0
1.00
4.204
0.075
10
1.2
999.8
1.00
4.193
0.150
15
1.7
999.2
1.00
4.186
0.223
20
2.3
998.3
1.00
4.183
0.296
25
3.2
997.1
1.00
4.181
0.367
30
4.3
995.7
1.00
4.179
0.438
35
5.6
994.1
1.01
4.178
0.505
40
7.7
992.3
1.01
4.179
0.581
45
9.6
990.2
1.01
4.181
0.637
50
12.5
988
1.01
4.182
0.707
55
15.7
986
1.01
4.183
0.767
60
20.0
983
1.02
4.185
0.832
65
25.0
980
1.02
4.188
0.893
70
31.3
978
1.02
4.191
0.966
75
38.6
975
1.03
4.194
1.016
80
47.5
972
1.03
4.198
1.076
85
57.8
968
1.03
4.203
1.134
90
70.0
965
1.04
4.208
1.192
95
84.5
962
1.04
4.213
1.250
100
101.33
958
1.04
4.219
1.307
105
121
954
1.05
4.226
1.382
110
143
951
1.05
4.233
1.418
115
169
947
1.06
4.240
1.473
120
199
943
1.06
4.248
1.527
125
228
939
1.06
4.26
1.565
130
270
935
1.07
4.27
1.635
135
313
931
1.07
4.28
1.687
140
361
926
1.08
4.29
1.739
145
416
922
1.08
4.30
1.790
150
477
918
1.09
4.32
1.842
155
543
912
1.10
4.34
1.892
160
618
907
1.10
4.35
1.942
165
701
902
1.11
4.36
1.992
170
792
897
1.11
4.38
2.041
175
890
893
1.12
4.39
2.090
180
1000
887
1.13
4.42
2.138
185
1120
882
1.13
4.45
2.187
190
1260
876
1.14
4.46
2.236
195
1400
870
1.15

2.282
200
1550
864
1.16
4.51
2.329
220

840

4.63

225
2550
834
1.20
4.65
2.569
240

814

4.78

250
3990
799
125
4.87
2.797
260

784

4.98

275
5950
756
1.32
5.20
3.022
300
8600
714
1.40
5.65
3.256
325
12130
654
1.53
6.86
3.501
350
16540
575
1.74
10.1
3.781
360
18680
528
1.90
14.6
3.921
· 1 kg/m3 = 0.001 g/cm3 = 0.0005780 oz/in3 = 0.16036 oz/gal (Imperial) = 0.1335 oz/gal (U.S.) = 0.0624 lb/ft3 = 0.000036127 lb/in3 = 1.6856 lb/yd3 = 0.010022 lb/gal (Imperial) = 0.008345 lb/gal (U.S) = 0.0007525 ton/yd3
· 1 N/m2 = 1 Pa = 1.4504x10-4 lb/in2 = 1x10-5 bar = 4.03x10-3 in water = 0.336x10-3 ft water = 0.1024 mm water = 0.295x10-3 in mercury = 7.55x10-3 mm mercury = 0.1024 kg/m2 = 0.993x10-5 atm
· 1 m3/kg = 16.02 ft3/lbm = 27680 in3/lbm = 119.8 US gal/lbm = 1000 liter/kg
· 1 kJ/(kg K) = 0.2389 kcal/(kg oC) = 0.2389 Btu/(lbm oF)

Temperature
- t -
Absolute pressure
- p -
Dynamic viscosity
- μ -
Kinematic
viscosity
- ν -
Expansion
coefficient
Specific enthalpy
Prandtl's no.
(oC)
(kN/m2)
(Centipoise)
10-6 (m2/s)
10-3 (l/K)
(kJ/kg)

0.01
0.6
1.78
1.792
-0.07
0
13.67
5
0.9
1.52

0.160
21.0

10
1.2
1.31
1.304
0.088
41.9
9.47
15
1.7
1.14

0.151
62.9

20
2.3
1.00
1.004
0.207
83.8
7.01
25
3.2
0.890

0.257
104.8

30
4.3
0.798
0.801
0.303
125.7
5.43
35
5.6
0.719

0.345
146.7

40
7.7
0.653
0.658
0.385
167.6
4.34
45
9.6
0.596

0,420
188.6

50
12.5
0.547
0.553
0.457
209.6
3.56
55
15.7
0.504

0.486
230.5

60
20.0
0.467
0.474
0.523
251.5
2.99
65
25.0
0.434

0.544
272.4

70
31.3
0.404
0.413
0.585
293.4
2.56
75
38.6
0.378

0.596
314.3

80
47.5
0.355
0.365
0.643
335.3
2.23
85
57.8
0.334

0.644
356.2

90
70.0
0.314
0.326
0.665
377.2
1.96
95
84.5
0.297

0.687
398.1

100
101.33
0.281
0.295
0.752
419.1
1.75
105
121
0.267

440.2

110
143
0.253

461.3

115
169
0.241

482.5

120
199
0.230
0.249
0.860
503.7
1.45
125
228
0.221

524.3

130
270
0.212

546.3

135
313
0.204

567.7

140
361
0.196
0.215
0.975
588.7
1.25
145
416
0.190

610.0

150
477
0.185

631.8

155
543
0.180

653.8

160
618
0.174
0.189
1.098
674.5
1.09
165
701
0.169

697.3

170
792
0.163

718.1

175
890
0.158

739.8

180
1000
0.153
0.170
1.233
763.1
0.98
185
1120
0.149

785.3

190
1260
0.145

807.5

195
1400
0.141

829.9

200
1550
0.138
0.158
1.392
851.7
0.92
220

0.149
1.597

0.88
225
2550
0.121

966.8

240

0.142
1.862

0.87
250
3990
0.110

1087

260

0.137
2.21

0.87
275
5950
0.0972

1211

300
8600
0.0897

1345

325
12130
0.0790

1494

350
16540
0.0648

1672

360
18680
0.0582

1764

理想气体的定压比热容cp/（kj/kg·K）
名称
分子式
温度/℃
－40
10
60
110
160
260
360
460
760
1200
氢
H2
14.83
14.29
14.11
14.09
14.18
14.43
14.67
14.84
15.02
16.25
氧
O2
0.9378
0.9169
0.9169
0.9253
0.9420
0.9797
1.013
1.043
1.097
1.147
氮
N2
1.089
1.043
1.026
1.026
1.034
1.059
1.089
1.118
1.172
1.252
氨
NH3
2.005
2.043
2.114
2.186
2.303
2.508
2.700
2.881
3.329
3.869
一氧化碳
CO
1.084
1.043
1.029
1.030
1.038
1.068
1.101
1.130
1.189
1.264
二氧化碳
CO2
0.7997
0.8289
0.8709
0.9043
0.9546
1.030
1.097
1.147
1.243
1.340
二氧化硫
SO2
0.5862
0.6071
0.6322
0.6573
0.6908
0.7411
0.7787
0.8122
0.8541
0.8960
硫化氢
H2S
0.9839
0.9797
0.9964
1.013
1.051
1.118
1.176
1.235
1.361
1.524
甲烷
CH4
2.077
2.189
2.336
2.466
2.675
3.031
3.383
3.689
4.568
5.355
乙烷
C2H6
1.465
1.692
1.913
2.081
2.336
2.721
3.077
3.395
4.153
4.823
丙烷
C3H8
1.344
1.603
1.846
2.026
2.290
2.684
3.031
3.337
4.036
4.652
正丁烷
C4H10
1.361
1.612
1.846
2.022
2.282
2.663
3.002
3.295
3.965
4.555
正戊烷
C5H12
1.352
1.603
1.838
2.009
2.265
2.646
2.977
3.266
3.923
4.492
正已烷
C6H14
1.339
1.591
1.825
2.001
2.257
2.633
2.960
3.249
3.889
4.455
正庚烷
C7H16
1.336
1.587
1.821
1.993
2.248
2.625
2.952
3.232
3.869
4.425
正辛烷
C8H18
1.336
1.583
1.817
1.993
2.244
2.617
2.943
3.224
3.852
4.400
整壬烷
C9H20
1.331
1.583
1.817
1.989
2.240
2.613
2.935
3.215
3.839
4.384
正癸烷
C10H22
1.331
1.578
1.813
1.985
2.236
2.608
2.931
3.207
3.831
4.371
环戊烷
C5H10
0.7913
1.105
1.800
1.578
1.863
2.273
2.629
2.935
3.630
4.199
甲基环戊烷
C6H12
0.9295
1.231
1.499
1.687
1.964
2.361
2.705
3.002
3.663
4.216
乙基环戊烷
C7H14
0.9504
1.256
1.528
1.721
1.997
2.399
2.738
3.035
3.689
4.442
环己烷
C6H12
0.8499
1.181
1.469
1.679
1.976
2.412
2.784
3.107
3.831
4.371
甲基环己烷
C7H14
0.9797
1.294
1.578
1.679
2.072
2.491
2.851
3.161
3.848
4.371
乙基环己烷
C8H16
1.026
1.336
1.612
1.813
2.098
2.512
2.868
3.169
3.839
4.358
乙烯
C2H4
1.298
1.495
1.687
1.829
2.043
2.357
2.633
2.872
3.416
3.919
丙稀
C3H6
1.256
1.461
1.658
1.805
2.026
2.353
2.642
2.897
3.479
3.998
丁烯-1
C4H8
1.231
1.461
1.679
1.838
2.068
2.412
2.709
2.968
3.546
4.065
戊烯-1
C5H10
1.269
1.499
1.712
1.871
2.106
2.449
2.747
3.006
3.588
4.099
己烯-1
C6H12
1.277
1.507
1.725
1.884
2.123
2.466
2.767
3.031
3.613
4.124
庚烯-1
C7H14
1.281
1.516
1.733
1.897
2.135
2.483
2.784
3.048
3.630
4.141
辛烯-1
C8H16
1.285
1.520
1.742
1.905
2.144
2.491
2.797
3.061
3.643
4.153
环戊烯

0.7704
1.038
1.281
1.453
1.699
2.060
2.369
2.642
3.249
3.726
丙二烯
C3H4
1.256
1.424
1.583
1.704
1.884
2.144
2.366
2.554
2.964
3.349
乙炔
C2H2
1.566
1.654
1.750
1.825
1.943
2.114
2.252
2.366
2.579
3.872
丙炔
C3H4
1.327
1.470
1.612
1.721
1.884
2.131
2.345
2.529
2.931
3.324
丁炔-1
C4H6
1.277
1.453
1.624
1.750
1.938
2.219
2.458
2.667
3.123
3.555
苯
C6H6
0.7536
0.9881
1.193
1.339
1.549
1.846
2.089
2.294
2.730
3.081

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