font-size:13px;line-height:200%">
|
温度 t
( ℃ ) |
密度ρ
(kg/m 3 ) |
比热 c,
(kJ/kg• ℃ ) |
导热系数λ × 10 2
(W/m• ℃ ) |
粘度
μ × 10 5
(Pa•s) |
普兰德数
Pr |
|
-50
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
120
140
160
180
200
250
300
350
400
500
600
700
800
900
1000
1100
1200 |
1.584
1.515
1.453
1.395
1.342
1.293
1.247
1.205
1.165
1.128
1.093
1.060
1.029
1.000
0.972
0.946
0.898
0.854
0.815
0.779
0.746
0.674
0.615
0.566
0.524
0.456
0.404
0.362
0.329
0.301
0.277
0.257
0.239 |
1.013
1.013
1.013
1.009
1.009
1.009
1.009
1.013
1.013
1.013
1.017
1.017
1.017
1.022
1.022
1.022
1.026
1.026
1.026
1.034
1.034
1.043
1.047
1.055
1.068
1.072
1.089
1.102
1.114
1.127
1.139
1.152
1.164 |
2.035
2.117
2.198
2.279
2.360
2.442
2.512
2.593
2.675
2.756
2.826
2.896
2.966
3.047
3.128
3.210
3.338
3.489
3.640
3.780
3.931
4.268
4.605
4.908
5.210
5.745
6.222
6.711
7.176
7.630
8.071
8.502
9.153 |
1.46
1.52
1.57
1.62
1.67
1.72
1.77
1.81
1.86
1.91
1.96
2.01
2.06
2.11
2.15
2.19
2.29
2.37
2.45
2.53
2.60
2.74
2.97
3.14
3.31
3.62
3.91
4.18
4.43
4.67
4.90
5.12
5.35 |
0.728
0.728
0.723
0.716
0.712
0.707
0.705
0.703
0.701
0.699
0.698
0.696
0.694
0.692
0.690
0.688
0.686
0.684
0.682
0.681
0.680
0.677
0.674
0.676
0.678
0.687
0.699
0.706
0.713
0.717
0.719
0.722
0.724 |
