Приложение 2
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
Физические свойства трансформаторного масла в зависимости от температуры [5]
|
t, °С |
r, кг/м3 |
СР, кДж/кг × К |
l, Вт/м × К |
n × 106, м2/с |
b × 104, К-1 |
Pr |
|
0.0 |
892.5 |
1.549 |
0.1123 |
70.5 |
6.80 |
866 |
|
10 |
886.4 |
1.620 |
0.1115 |
37.9 |
6.85 |
484 |
|
20 |
880.3 |
1.666 |
0.1106 |
22.5 |
6.90 |
298 |
|
30 |
874.2 |
1.729 |
0.1008 |
14.7 |
6.95 |
202 |
|
40 |
868.2 |
1.788 |
0.1090 |
10.3 |
7.00 |
146 |
|
50 |
862.1 |
1.846 |
0.1082 |
7.58 |
7.05 |
111 |
|
60 |
856.0 |
1.905 |
0.1072 |
5.78 |
7.10 |
87.8 |
|
70 |
850.0 |
1.964 |
0.1064 |
4.54 |
7.15 |
71.3 |
|
80 |
843.9 |
2.026 |
0.1056 |
3.66 |
7.20 |
59.3 |
|
90 |
837.8 |
2.085 |
0.1047 |
3.03 |
7.25 |
50.5 |
|
100 |
831.8 |
2.144 |
0.1038 |
2.56 |
7.30 |
43.9 |
|
110 |
825.7 |
2.202 |
0.1030 |
2.20 |
7.35 |
38.8 |
|
120 |
819.6 |
2.261 |
0.1022 |
1.92 |
7.40 |
34.9 |
