Acoustic Treatment Solution of the Technical Room …
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2 Study Case—Problem Analysis
2.1 Noise Source Data
Pumping station No. 25 “Mokroluško brdo” in Belgrade is a facility with a purpose
of water supply of a city segment at third and fourth height zone. Facility is shown
in Fig. 1—left. The facade of the building where technical room is located can be
also seen on Fig. 1. The face pf the facade is looking toward the affected object in
the vicinity, which can be seen on Fig. 1—middle.
Inside the technical room, six pumping engines are installed (two groups with
three of the same type). The distribution of the machines is shown in Fig. 1—right,
while technical characteristic can be seen in Table 1.
Fig. 1 Pumping station No. 25.“Mokroluško brdo” in Belgrade (left), residential building in the
nearby the pumping station (middle), and distribution of the water pump engines in the technical
room inside pumping station (right)
Table 1 Technical characteristics of the pumping engines
Electric engine—3 peaces
Group
Manufacturer
Type
P (kW)
n (min −1 )
I
Sever
OKN 6110/4
200
1472
II
Sever
OKN 6130/4
315
1476
Pump—3 peaces
Group
Manufacturer
Type
H (m)
Q (l/s)
I
Litostroj
CV9/40-IV-8
146
80
II
Litostroj
5CN9
80
250