50

40

dB

30

 

20

 

10

31,5 63 125 250 500 1K 2K 4K 8K

Frequency [Hz]

Text Box: B
Text Box: A

Dimensions :

S.C. Hu-tec Engineering S.R.L.

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SILENCERS TYPE NAS

Specification:

 

Type NAS residential/critical silencers are absorptive silencers and are in general used for attenuation (approx. 30 dB (A)) in the middle and higher frequencies.

The silencers can be mounted in both horizontal and vertical way. Recommended gas speed max. 60 m/s, maximum temperature 600 C.

In general, the silencers are manufactured in mild steel (S 235 JR G2) and provided with a black heat resistant silicon coating. The silencers are optionally also available in other material such as stainless steel 304 and 316.

 

Attenuation silencer: (measured on a 6 system)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The pressure drop of the silencer is depending of the exhaust flow (gas velocity) through the silencer.

With the help of below mentioned formula it is easy to calculate the pressure fall.

If required we will give additional detailed information.

In case of strict noise level and/or limited dimensions, it is often not possible to work with a standard silencer.

The know-how of acoustics and flow dynamics of the technical department , enables them to design a silencer for a specific sound- source, which results in a optimum noise reduction for that specific situation.

 

 

Pressure drop calculation:

 

 

 

 

 

 

Combination of air-inlet and outlet silencer and double exhaust silencers for specialized compressed air systems

Nominal Bore

050

065

080

100

125

150

200

250

300

350

400

450

500

A (mm)

60,3

76,2

88,9

114,3

139,7

168,3

219,1

273,0

323,9

355,6

406,4

457,2

508,0

B (mm)

150

200

200

250

300

350

400

550

600

700

800

800

900

C (mm)

750

750

1000

1000

1250

1250

1500

2000

2250

2500

2750

3000

3000

D (mm)

900

900

1150

1250

1500

1500

1750

2250

2500

2750

3000

3250

3250

Weight ( in kg)

10

15

20

30

45

70

95

200

275

350

425

475

575