Silencer / Acoustic Louvre / Acoustic Panel & Enclosure / Acoustic Lining

HVAC Silencer and Acoustic Louvres
Rectangular Silencers:

Rectangular silencers effectively eliminate noise generated by air conditioning ducting while preventing as much pressure drop and energy loss as possible.  They are factory built to fit the duct, made in sections to fit under or through beams, with or without various types of acoustic media that control noise breakout and incorporate different degrees of silencing to suit each individual application.

Elbow Silencers:

Elbow silencers are basically the same as rectangular models but only used when space is a major constraint for the installation of silencers.

Circular Silencers:

The circular straight through silencers with thick acoustic media over the entire circumference provide the same airflow passage as connecting duct but excellent noise suppression properties.  An aerodynamic acoustic centrebody incorporates in the circular centrebody silencers for even greater acoustic performance, particularly in the high frequency range.

Acoustic Louvres:

Acoustic louvre is a short design for wall openings.  The louvre vane is filled with acoustic media and protected from the weather by position and perforated metal blades.  The standard size is 3050 x 1220 mm while the standard thickness is either 300 or 600 mm.

Acoustic Panels

Acoustic panels are constructed by a roll formed inner and outer skins of stainless steel with internal stiffening.  The outer skin can be perforated in some models.  Thermal / Acoustical material is sandwiched between skins for outstanding acoustic performance.  The sound absorptive layer can be made of fiberglass, mineral wool or foam.  The panels are self-aligning and can be installed in minimum of time with excellent moisture, air and noise resistance properties.

Thickness: 50 or 100 mm
Width: 950 to 1125 mm
Length: as required

Acoustic Enclosures

Acoustic enclosures are constructed by acoustic panels with access doors.  Special sealant is installed along outside seams between acoustic panels.  Two rows of caulking tape are installed between concrete wall and acoustic panels if necessary.  Access door is constructed by galvanized steel frame, galvanized or stainless steel face sheet and solid inside sheet with internal stiffening.  Thermal/ Acoustical material is sandwiched between skins for outstanding acoustic performance.  Other features include double pane Plexiglas window, premium quality of 2 Ventolok 310 handles, 2 plated butt hinges and neoprene bulb gasket door perimeter seal.

Standard door size: 1500 x 600 mm
Standard window size: 300 x 300 mm

Genset Exhaust Muffler

Exhaust muffler has much greater outside body dimensions than duct or pipe connection for low frequency attenuation.  It is made from cold rolled steel sheet with fully welded construction.  Braces and stiffener are provided to minimize “drumming”.  High temperature heat resistance aluminium paint which withstands an operating temperature of 600˚C is coated on the muffler for extra protection and durability.  It can be installed in vertical, horizontal or inclined position as long as the direction of gas flow is correct.  Apart from standard models, tailor made solutions are also available for your choice.

Standard outer diameter: 150 to 1950 mm

Standard length: 760 to 8250 mm

Plant Room Acoustic Wall Lining

Acoustic wall lining is particularly used at plant room for reducing noise from reverberant sound field.  Basic design is identical with the use of sound absorptive material, e.g. glassfibre or mineral, which held in place by fixing channels onto wall or ceiling soffit.  To protect the sound absorptive materials from mechanical abrasion, it is surface covered with galvanized steel perforated sheet.

Thickness of lining: 50 or 100 mm depending on sound absorption requirement.


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