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BTH-B2E • Rectangular sound attenuators express

  • Rectangular
  • Galvanised steel
  • Mineral wool + resonance plates
  • Delivery within a week

Standard rectangular sound attenuators with a fixed length of 1000 mm.

Delivery possible within a week.

Application

  • BTH-B2E silencers are designed to reduce sound generated from fans and airconditioning devices with maximum sound attenuation in the 250Hz octave band. The sound attenuation performance of the BTH-B2 silencers with build-in B2 attenuation splitters are superior to classical absorption attenuators on frequencies of 63 to 500 Hz with equal length and width of splitters and equal splitter pattern pitch. In other frequency bands the BTH-B2 silencers are also well adapted to ventilation and air-conditioning system acoustic requirements

  • Silencers with Splitter thickness d=100mm is suitable for smaller air flow rates as well as in the case where high degree attenuation is required in the high frequency range.
  • Standard version silencers with cellulose foil or galvanized steel sheet plates are suitable for velocities up to 20m/s between the splitters

Composition

  • The attenuation housing is made of galvanized sheet steel which complies with air tightness class C (ATC3)
  • Splitters with frames of galvanized steel and fillings with highly efficient absorption material are build into the housing
  • Filling exposed surface is protected with cellulose foil
  • They are designed to be incombustible class A1, Euroclass DIN EN 13501-1
  • B2 splitters are partly covered with galvanized steel strips
  • Strips of galvanized sheet steel or cellulose foil run along the splitter length L
  • The B2 splitter height en length are not interchangeable. The splitter L dimension shall always run in the direction of the propagation of sound

Order example

BTH-B2E BXHXL / d= 100 / n= ...

Explanation

BTH-B2E : Silencer type with B2 Splitters with cellulose foil and sheet steel plates

BXHXL : Width X Height X Length

d=100 : Splitter thickness of 100mm

n= ... : Number of splitters


Articles

Article selection assistant
Type
Volume [L]
Article number Type Volume [L] E-shop
J019006000200 VKG-HC 200 200
J019006000300 VKG-HC 300 300
J019006000500 VKG-HC 500 500
J019006000750 VKG-HC 750 750
J019006001000 VKG-HC 1000 1000
J019006001500 VKG-HC 1500 1500
J019006002000 VKG-HC 2000 2000
J019006002500 VKG-HC 2500 2500
J019006003000 VKG-HC 3000 3000
J019006004000 VKG-HC 4000 4000
J019006005000 VKG-HC 5000 5000
=> Stock product central warehouse, except sales

Attenuation values BTH-B2 Splitter thickness d=100mm

L=1000 mm - d=100
s [mm][Hz]
631252505001000200040008000
40816242825231815
50712202624211613
60610182423191411
62.5610182423191411
66.769172423191411
7558152323191410
804815222319139
83.34815222319139
87.54714222319139
903713212319138
1003612212319138

Specifications

  • L = Length in mm
  • s = Distance between splitters in mm
  • Hz = Frequency band in Hertz
  • Sound attenuation capacities D given in dB

Pressure losses BTH-B2 Splitter thickness d=100mm

L=1000 mm - d=100
s [mm]v (m/s)
2468101214161820
40281832507297127161199
50271527436184109138171
6026142438547496122150
62.516132437547396121150
66.716132336517091115142
7515122132466382104129
8015112031446079100123
83.315112031446079100123
87.51511193043587696118
901510182841567392114
1001410172638526886106

Specifications

  • L = Length in mm
  • s = Distance between splitters in mm
  • Vs = Air velocity between splitters in m/s
  • Pressure drop vallues Dp are given in Pa

Specifications

  • B X H X L = Width X Height X Length in mm
  • d= Splitter thickness 100 in mm
  • n = Number of splitters
  • s = Distance between splitters in mm
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