silencers - ventilation-alnor.co.uk · silencers are intended to reduce noise levels generated in...
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413
Silencers
ALNOR reserves the right to modify technical specifications in line with the policy of continuous product improvement.
ALNOR® systemy wentylacjiis a registered trademark protected by a technical patent. All modification rights reserved.
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ALNOR® ventilation systemsis a registered trademark protected by a technical patent. All modification rights reserved.
System description
Dimensions
System descriptionTogether with matching fittings and ducts, silencers provide a complete system for building ventilation ductwork. The wide range of various types and versions allow adapting silencers to virtually any design requirements.
Application advantagesSilencers are intended to reduce noise levels generated in the ductwork by fans and AHUs and transmitted through the ductwork from the ventilated rooms. The flexible design and compatibility with other ventilation system components allow installation in exposed areas.
The dedicated software suite, AlnorSILENT, helps designers in selecting the right silencer for specific fans and expected noise levels.Diameter sizes of all round silencers are compatible with
SPIRAL®system round fittings. Square silencer need to be size-adjusted to the dimensions of the existing ductwork and fittings installed. Other sizes are shown in the tables and specifications in the individual Product Data Sheets.
Installation instructionsRound silencers are fastened with self-drilling screws or blind rivets, either of which are driven through the ductwork length overlapping the connection flange inside. All parts with a diameter over 315 mm have female joints and require two additional male couplings for connecting with the ductwork. Square silencers are fastened with screws at steel corner straps and with a KQL G-clamp which fastens two flange frames.
MarkingALNOR products carry the Polish conformity mark B for construction products and product codes as shown in the technical specifications listed in this catalogue.
SPIRAL®system round silencers are made from galvanized steel sheet and are provided with PZH-NIH Hygiene Certificate no. HK/B/0867/01/2009.
Square silencers have the following PZH-NIH Hygiene Certificates:a) The galvanized steel sheet version: HK/B/0100/02/2009a) The stainless steel sheet version: HK/B/0101/01/2009
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Silencers
ALNOR® ventilation systemsis a registered trademark protected by a technical patent. All modification rights reserved.
Technical specifications - Silencers
PROD
UC
T
CO
DE
Insulation
thickness
Dimensions
min. —
max.
Insulation
material
Insulation
typeFinish
JointO
uter claddingInner cladding
LengthBaffle
Materials
SIL50
100080-900
glass wool
trimm
ed
from reel,
flexible
press-formed cover
segmented cover
male port w
/gasket
female port from
355
mm
SPIRAL tube
perforated sheet
300/500/600/900/10
00/1200/1500/
max. 3000
–
galvanized steel
1.4301 or 1.4404 stainless steel
aluminium
copper
SIBL100
315-800glass w
ool
trimm
ed
from reel,
flexible
segmented cover
male port w
/gasket
female port from
355
mm
SPIRAL tube
perforated sheet600/900/
1000/1500
straight,
100 mm
galvanized steel
1.4301 or 1.4404 stainless steel
aluminium
copper
SIBOL
50
100200-1000
glass wool
trimm
ed
from reel,
flexible
press-formed cover
segmented cover
male port w
/gasket
female port from
355
mm
SPIRAL tube
perforated sheet300/500/600/900/1000/1200/1500
round
from d-100
to d-500
galvanized steel
1.4301 or 1.4404 stainless steel
aluminium
copper
SIRL100
150080-800
rock wool
trimm
ed
from reel,
flexible
segmented cover
male port w
/gasket
female port from
355
mm
SPIRAL tube
perforated sheet300/600/900/1000/1200/1500
–
galvanized steel
1.4301 or 1.4404 stainless steel
aluminium
copper
SIBRL100
315-800rock w
ool
trimm
ed
from reel,
flexible
segmented cover
male port w
/gasket
female port from
355
mm
SPIRAL tube
perforated sheet1000/1200/
1500
straight,
100 mm
galvanized steel
1.4301 or 1.4404 stainless steel
aluminium
copper
SIBROL
100-150200-1000
rock wool
trimm
ed
from reel,
flexible
press-formed cover
segmented cover
male port w
/gasket
female port from
355
mm
SPIRAL tube
perforated sheet300/600/900/1000/1200
round
from d-100
to d-500
galvanized steel
1.4301 or 1.4404 stainless steel
aluminium
copper
SIL-GL
2550
100
080 - 315glass w
ool
trimm
ed
from reel,
flexible
segmented - hem
med
and seamed w
ith
cladding
male port w
/gasketplain tube
perforated sheet300/500/600/900/1000
–
galvanized steel
1.4301 or 1.4404 stainless steel
aluminium
copper
SI-GL
2550
100
080 - 315glass w
ool
trimm
ed
from reel,
flexible
segmented - hem
med
and seamed w
ith
cladding
male port w
/o gasketplain tube
perforated sheet300/500/600/900/1000
–
galvanized steel
1.4301 or 1.4404 stainless steel
aluminium
copper
SQLL-25
25100 - 630
glass wool
trimm
ed
from reel,
flexible
square cover w/port
male port w
/gasketsquare
perforated
sheet600/900/1200
–
galvanized steel
1.4301 or 1.4404 stainless steel
aluminium
copper
SQLL-50
50100-630
glass wool
trimm
ed
from reel,
flexible
square cover w/port
male port w
/gasketsquare
perforated
sheet300/500/600/900/1000
–
galvanized steel
1.4301 or 1.4404 stainless steel
aluminium
copper
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ALNOR® ventilation systemsis a registered trademark protected by a technical patent. All modification rights reserved.
Technical specifications - Silencers
SQLL-C
R10-100
080-250glass w
ool
with lining
rigid panel
with lining
square cover w/port
male port w
/gasket square
insulation panel
ridge 500/700/900/1200
–
galvanized steel
1.4301 or 1.4404 stainless steel
aluminium
copper
SQLL-C
RQ10-100
080-250glass w
ool
with lining
rigid panel
with lining
square cover w/port
+ angle frame on the
other side
male port w
/gasket +
square w/PQ
-20 angle
on the other side
square
insulation panel
ridge + perforat-
ed end
500/700/900/
1200–
galvanized steel
1.4301 or 1.4404 stainless steel
aluminium
copper
SQQ
L-3030
100-630glass w
oolrigid panel
with lining
square cover w/port
male port w
/gasketsquare
insulation panel
square600/900/1200
–
galvanized steel
1.4301 or 1.4404 stainless steel
aluminium
copper
SQQ
L-B-3030
100-630glass w
oolrigid panel
with lining
square cover w/port
+ side branch portm
ale port w/gasket
squareinsulation panel
square600/900/1200
–
galvanized steel
1.4301 or 1.4404 stainless steel
aluminium
copper
BSIL50
100125-630
glass wool
trimm
ed
from reel,
flexible
segmented cover
male port w
/gasketsegm
ented
bend
perforated
sheet
90 degree
other angles
are available on
request
–
galvanized steel
1.4301 or 1.4404 stainless steel
aluminium
copper
SLEFL2550
080-315glass w
ool
trimm
ed
from reel,
flexible
flat metal cover
male port w
/safe edge
male port w
/gasket
female port w
/safe
edge
aluminium
-
polyester foil
FLEX
perforated
500/600/1000/
1200–
aluminium
SLEAL
2550080-315
glass wool
trimm
ed
from reel,
flexible
nonefem
ale port
Aluduct - alu-
poly film over
wire ribs
Aluduct
perforated
500/600/1000/
1200–
aluminium
SLESD2550
080-315glass w
ool
trimm
ed
from reel,
flexible
flat metal cover
male port w
/safe edge
male port w
/gasket
female port w
/safe
edge
aluminium
-
polyester foil
Aluduct
perforated
500/600/1000/
1200–
aluminium
SLEAF
2550080-315
glass wool
trimm
ed
from reel,
flexible
galvanized
segmented cover
male port w
/safe edge
male port w
/gasket
female port w
/safe
edge
FLEXFLEX
perforated
500/600/1000/
1200–
aluminium
SLEFD2550
080-315glass w
ool
trimm
ed
from reel,
flexible
galvanized
segmented cover
male port w
/safe edge
male port w
/gasket
female port w
/safe
edge
Aluduct - alu-
poly film over
wire ribs
FLEX
perforated
500/600/1000/
1200–
aluminium
SLEFL2550
080-315glass w
ool
trimm
ed
from reel,
flexible
flat metal cover
male port w
/safe edge
male port w
/gasket
female port w
/safe
edge
polyethylene
cladding
FLEX
perforated
500/600/1000/
1200–
aluminium
417
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Silencers
ALNOR® ventilation systemsis a registered trademark protected by a technical patent. All modification rights reserved.
System description
The silencers are made from galvanized steel sheets.
Other materials are available on request:1.4301/304 stainless steel sheet 1.4404 /316L stainless steel sheet, molybdenum-enriched AW-1050A H24 aluminium sheet
Specify the metal grade designation when ordering. Note that if no metal grade is specified in your order, the product will be made from the standard galvanized steel sheet.
Examples of metal grade ordering designations:SIL-K-… — 1.4301/304SIL-K-…..-…..-316L — 1.4404/316LSIL-A-…. — AW-1050A H24
Components made from stainless steel have to be inspected at least every 6 months.
Silencer dimensions
Silencer tolerance limits
The SPIRAL®system must follow these specifications to meet the required sealing performance.
Material specifications
Ød1 nom
(mm)e
(mm)tolerance
(mm)
80-315 36 +0 -6
355-400 55 +0 -6
450-630 75 +0 -10
710-900 100 +0 -10
1000-1250 115 +0 -20
Diameter Ød1 nom
(mm)
Min. - max. diameter Ød1 min- Ød1 max
(mm)
Sheet thickness tnom
(mm)
80 78.8 - 79.3 0.5
100 98.8 - 99.3 0.5
112 110.5 - 111.3 0.5
125 123.8 - 124.3 0.5
140 138.7 - 139.3 0.5
150 148.7 - 149.3 0.5
160 158.7 - 159.3 0.5
180 178.6 - 179.3 0.5
200 198.6 - 199.3 0.5
224 222.5 - 223.3 0.5
250 248.5 - 249.3 0.5
280 278.4 - 279.3 0.5
300 298.4 - 299.3 0.5
315 313.4 - 314.3 0.5
355 353.3 - 354.3 0.5
400 398.3 - 399.3 0.5
450 448.2 - 449.3 0.5
500 498.2 - 499.3 0.5
560 558.1 - 559.3 0.6
600 598.2 - 599.3 0.6
630 628.1 - 629.3 0.6
710 708.0 - 709.3 0.7
800 798.0 - 799.3 0.7
900 897.9 - 899.3 0.7
1000 997.9 - 999.3 0.9
1120 1117.8 - 1119.3 0.9
1250 1247.8 - 1249.3 0.9
Product code examples
Product code: SIL - iii - aaa - bbb
typeInsulation thicknessØd1L
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ALNOR® ventilation systemsis a registered trademark protected by a technical patent. All modification rights reserved.
Tolerance limits for ventilation silencersmade from stainless steel, copper, or aluminium
DiameterØdnom (mm)
Sheet thickness tnom (mm)
DiameterØdnom (mm)
Sheet thickness tnom (mm)
80 0.5 80 0.6
100 0.5 100 0.6
112 0.5 112 0.6
125 0.5 125 0.6
140 0.5 140 0.6
150 0.5 150 0.6
160 0.5 160 0.6
180 0.5 180 0.6
200 0.5 200 0.6
224 0.5 224 0.6
250 0.5 250 0.6
280 0.5 280 0.6
300 0.5 300 0.6
315 0.5 315 0.6
355 0.5 355 0.6
400 0.5 400 0.6
450 0.5 450 0.6
500 0.5 500 0.6
560 0.7 560 0.6
600 0.7 600 0.6
630 0.7 630 0.6
710 0.7 710 0.6
800 0.7 800 0.6
900 0.7 900 0.6
1000 0.7 1000 0.8
1250 0.7 1250 0.8
1.4301/304 sheet compo-nents
1.4404/316L sheet compo-nents
AW-1050A H24 sheet com-ponents
The 1.4301 and 1.4404 stainless steel silencers are designed for use with round and square ducts and fittings. The covers are segmented and the component wall thickness sizes depend on the silencer diameter and material. The 1.4404 steel sheet cladding features a perforated inner cladding of 1.4301 steel sheet; the molybdenum-enriched version manufacturability is determined and quoted on special request only. The SIBOL silencer baffle breasts are conical and segmented. Before ordering your silencer, verify that the glass or rock wool and the lining or glass cloth will provide sufficient resistance to the airborne contaminants inside the ductwork. The perforation style, the wool type and the lining type can provide the sound insulation performance identical to that of the standard galvanized steel sheet silencers.
The copper or aluminium sheet ducted silencers perfectly match spiral coiled tubes and round segmented fittings. The outer cladding and the inner perforated cladding are made of copper or aluminium sheet, respectively. The SIBOL and SIBROL silencer baffle breasts are segmented. The rock or glass wool with a lining can provide the sound insulation performance identical to that of the standard galvanized steel sheet silencers.
80 0.8 80 0.6
100 0.8 100 0.6
112 0.8 112 0.6
125 0.8 125 0.6
140 0.8 140 0.6
150 0.8 150 0.6
160 0.8 160 0.6
180 0.8 180 0.6
200 0.8 200 0.6
224 0.8 224 0.6
250 0.8 250 0.6
280 0.8 280 0.6
300 0.8 300 0.6
315 0.8 315 0.6
355 0.8 355 0.6
400 0.8 400 0.6
450 0.8 450 0.6
500 0.8 500 0.6
560 0.8
600 0.8
630 0.8
710 0.8
800 0.8
900 0.8
DiameterØdnom (mm)
Sheet thickness tnom (mm)
DiameterØdnom (mm)
Sheet thickness tnom (mm)
M1-E sheet components
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Silencers
ALNOR® ventilation systemsis a registered trademark protected by a technical patent. All modification rights reserved.
System description
A selection of the SPIRAL®system silencers have been tested by the Institute of Power Engineering, Research Institute, Thermal Technology Branch ‘ITC’ in Łódź.The silencer sample performance was measured in a reverberation chamber as per EN ISO 7235:2009, “Acoustics. Laboratory measurement procedures for ducted silencers and air-terminal units. Insertion loss, flow noise and total pressure loss”, and EN ISO 3741:2010, “Acoustics. Determination of sound power levels and sound energy levels of noise sources using sound pressure. Precision methods for reverberation test rooms.”The measurement scheme is shown below:
Measurement method
The chart below shows the sound insulation parameters for a selection of the SIL-50 silencers of various diameter sizes and identical body length.
speakerchamber tested silencer
subsitute duct
fan silencersilencer
reverberationchamber
420
Sile
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ALNOR® ventilation systemsis a registered trademark protected by a technical patent. All modification rights reserved.
System description
The AlnorSILENT software suite is a silencer selection tool for HVAC designers. AlnorSILENT calculates the silencer performance characteristics based on the user's input data. AlnorSILENT enables HVAC designers to analyse the key product features. The software product database contains the sound insulation performance data for round and square silencers. AlnorSILENT features a very user-friendly, intuitive, and highly functional GUI with multiple panels. The panels make it possible to review Product Data Sheets, 3D models and performance data tables at a glance. AlnorSILENT can provide several alternative silencers to choose from for the expected sound insulation performance. The 3D models of silencers can be exported to IFC and DXF files. Once a silencer is chosen, AlnorSILENT will export detailed lists of technical specifications for an easy cost estimation of the ventilation system.
Design softwareApplication advantages of AlnorSILENT
• Choose the silencer to match the specified ventilation fan and the expected sound insulation performance
• Several alternative silencers to choose from for the expected sound insulation performance
• Full lists of technical specifications and data• A comprehensive database of sound performance data
for round and square silencers• Automatic silencer cost estimation in the Distributor's
Edition• Silencer 3D models to exportable to IFC and DXF files• AlnorSILENT is a freeware programme.
Download and install AlnorSILENT
421
Silencers
ALNOR® ventilation systemsis a registered trademark protected by a technical patent. All modification rights reserved.
Round silencers
SIL/SIBL/SIRL/SIBRL/SIBOL/SIBROL
Technical specificationsDesign
The ducted silencers are made of a spiral coiled duct for the outer cladding with an inner cladding of perforated sheet. The clearance between the outer and inner cladding is filled with mineral wool, which is a sound-absorbing material.The glass fibre cloth between the perforated inner cladding and the mineral wool keeps the mineral wool fibres from being entrained by the air flow.
Connections
The standard silencer versions are supplied with gaskets.The silencer sizes d1 > 315 mm require ordering the NSL male couplings.Dimensions
The silencers are available with the connection diameter sizes from 80 mm to 800 mm and the standard length sizes of 300, 600, 900 or 1500, depending on the connection diameter.
Technical specifications
See the respective sections for dimensions, weight, sound insulation performance and pressure loss values of specific product types.
Dimensions
Cross-section for specific types of SIBL and SIBRL
The female joint silencer versions for d1 < 315 mm are designated SIBLF and SIBRLF
Cross-section for specific types of SIL, SIRL, d1 > 315 mm
The female joint silencer versions for d1 < 315 mm are designated SILF and SIRLF
Cross-section for specific types of SIL and SIRL, d1 ≤ 315 mm.
Not applicable to the diameter sizes: D-100, D-125, D-160, D-200, D-250 with 50 mm thick insulation.
Cross-sec t ion of SIL and SIRL with 50 mm thick insulat ion; applies to the diameter sizes: D-100, D-125, D-160, D-200, D-250.
The silencers are fabricated with press-formed covers.