8
Noise
Sound pressure level for different distances from the device.
Power level
acoustic
Lw [dB (A)]
Directivity
factor
Q
Distance from the noise source r [m]
1
2
3
4
5
6
8
10
12
15
Sound pressure level Lp [dB (A)]
64
2
56
50
46
44
42
40
38
36
34
32
4
59
53
49
47
45
43
41
39
37
36
8
62
56
52
50
48
46
44
42
40
39
Q=2
Q=4
Q=8
Q = 2: freestanding heat pump on
the outside of the building.
Q = 4: heat pump on the building's wall.
Q = 8: heat pump on the building's wall
situated in the corner
