 |
|
ArticlesPressure loss and noise levels
| |
α 0° |
α 30° |
α 60° |
| V (m/s) |
Δpt Pa |
LwA dB(A) |
Δpt Pa |
LwA dB(A) |
Δpt Pa |
LwA dB(A) |
| 1 |
< 5 |
< 20 |
5 |
27 |
78 |
29 |
| 2 |
< 5 |
23 |
23 |
43 |
320 |
50 |
| 3 |
< 5 |
35 |
52 |
54 |
780 |
63 |
| 4 |
< 5 |
43 |
90 |
62 |
1350 |
72 |
| 5 |
< 5 |
49 |
150 |
66 |
> 1500 |
78 |
| 6 |
< 5 |
53 |
240 |
71 |
> 1500 |
84 |
| 7 |
7 |
58 |
330 |
74 |
> 1500 |
90 |
| 8 |
8 |
62 |
420 |
78 |
> 1500 |
93 |
| 9 |
11 |
65 |
520 |
82 |
> 1500 |
97 |
| 10 |
14 |
68 |
640 |
84 |
> 1500 |
>100 |
| 11 |
17 |
71 |
800 |
86 |
> 1500 |
>100 |
| 12 |
20 |
73 |
960 |
89 |
> 1500 |
>100 |
| 13 |
23 |
75 |
1090 |
91 |
> 1500 |
>100 |
| 14 |
27 |
77 |
1270 |
93 |
> 1500 |
>100 |
| 15 |
32 |
79 |
1470 |
94 |
> 1500 |
>100 |
|