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Rectangular Silencer LDR

Rectangular Silencer LDR

Price:€108.34
Weight: 20.000 Kgs

Easily-fitted silencer immediately before or after the KE, KT, RS and RSI rectangular duct fans. Effectively suppresses noise transmitted to the duct. The silencer should be used together with an insulated fan where there is a requirement for noise suppression both in the duct and in the surroundings as a whole. All silencers are supplied with a universal flange suitable for PG flange or Metu profile.

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Noise suppression dB (mid-frequency Hz)
 
  125 250 500 1k 2k 4k 8k
LDR 30-15 7 15 18 25 25 19 19
LDR 40-20 5 9 15 23 16 12 10
LDR 50-25 10 15 25 25 20 15 12
LDR 50-30 8 15 20 31 17 14 11
LDR 60-30 8 15 20 31 17 14 11
LDR 60-35 7 13 17 18 13 10 8
LDR 70-40 7 11 14 14 10 8 6
LDR 80-50 6 8 10 11 8 6 3
LDR 100-50 6 8 10 11 8 6 3

 

Dimensions:

 

  B H  
LDR 30-15 300 150 10 kg
LDR 40-20 400 200 13 kg
LDR 50-25 500 250 17 kg
LDR 50-30 500 300 19 kg
LDR 60-30 600 300 21 kg
LDR 60-35 600 350 23 kg
LDR 70-40 700 400 27 kg
LDR 80-50 800 500 34 kg
LDR 100-50 1000 500 41 kg
       

 

Diagram:

 

Pressure drop calculation for rectangular silencers

These calculations apply only if the silencer is connected to a duct at both ends.

Example: Calculation of pressure drop for the LDR 60-35 (with dan model RSI 60-35 M3~) using the diagram to the right.

1. Start by defining the front area, see the table below.
2. Move horizontally to the right until you reach the designated air flow in diagram B.
3. Go up vertically to diagram A and the correct p value (see the table).
4. Then continue horizontally to the left and read off the pressure drop.

In this example, the pressure drop is 27 Pa.

     
  Front area m2 P
LDR 30-15 0.045 3.5
LDR 40-20 0.08 3.6
LDR 50-25 0.125 3.7
LDR 50-30 0.15 3.3
LDR 60-30 0.18 3.3
LDR 60-35 0.21 3.0
LDR 70-40 0.28 3.1
LDR 80-50 0.40 3.6
LDR 100-50 0.50 3.6
     

 

All prices include VAT!

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