Учебное пособие: Тепловой расчет силового трансформатора
Физические свойства
сухого воздуха при В = 760 мм.рт.ст. [6]
| t, °С |
r,
кг/м3
|
l × 102,
Вт/м∙ К
|
а× 106,
м2 /с
|
m × 106,
Н × с /м2
|
n × 106, м 2 /с
|
Pr |
| -50 |
1.584 |
2.04 |
12.7 |
14.6 |
9.23 |
0.728 |
| -40 |
1.515 |
2.12 |
13.8 |
15.2 |
10.04 |
0.728 |
| -30 |
1.453 |
2.20 |
14.9 |
15.7 |
10.80 |
0.723 |
| -20 |
1.395 |
2.28 |
16.2 |
16.2 |
12.79 |
0.716 |
| -10 |
1.342 |
2.36 |
17.4 |
16.7 |
12.43 |
0.712 |
| 0 |
1.293 |
2.44 |
18.8 |
17.2 |
13.28 |
0.707 |
| 10 |
1.247 |
2.51 |
20.0 |
17.6 |
14.16 |
0.705 |
| 20 |
1.205 |
2.59 |
21.4 |
18.1 |
15.06 |
0.703 |
| 30 |
1.165 |
2.67 |
22.9 |
18.6 |
16.00 |
0.701 |
| 40 |
1.128 |
2.76 |
24.3 |
19.1 |
16.96 |
0.699 |
| 50 |
1.093 |
2.83 |
25.7 |
19.6 |
17.95 |
0.698 |
| 60 |
1.060 |
2.90 |
27.2 |
20.1 |
18.97 |
0.696 |
| 70 |
1.029 |
2.96 |
28.6 |
20.6 |
20.02 |
0.694 |
| 80 |
1.000 |
3.05 |
30.2 |
21.1 |
21.09 |
0.692 |
| 90 |
0.972 |
3.13 |
31.9 |
21.5 |
22.10 |
0.690 |
| 100 |
0.946 |
3.21 |
33.6 |
21.9 |
23.13 |
0.688 |
| 120 |
0.898 |
3.34 |
36.8 |
22.8 |
25.45 |
0.686 |
| 140 |
0.854 |
3.49 |
40.3 |
23.7 |
27.80 |
0.684 |
| 160 |
0.815 |
3.64 |
43.9 |
24.5 |
30.09 |
0.682 |
| 180 |
0.779 |
3.78 |
47.5 |
25.3 |
32.49 |
0.681 |
| 200 |
0.746 |
3.93 |
51.4 |
26.0 |
34.85 |
0.680 |
| 250 |
0.674 |
4.27 |
61.0 |
27.4 |
40.61 |
0.677 |
| 300 |
0.615 |
4.60 |
71.6 |
29.7 |
48.33 |
0.674 |
| 350 |
0.566 |
4.91 |
81.9 |
31.4 |
55.46 |
0.676 |
| 400 |
0.524 |
5.21 |
93.1 |
33.0 |
63.09 |
0.678 |
| 500 |
0.456 |
5.74 |
115.3 |
36.2 |
79.38 |
0.687 |
Приложение 3
Страницы: 1, 2, 3, 4, 5, 6, 7, 8 |
