silencers - ventilation-alnor.co.uk · silencers are intended to reduce noise levels generated in...

http://www.alnor.com.pl/produkty_pl/Kanaly-i-ksztaltki-okragle.html

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.

Download Wentyle

Download AlnorCAM

B2B ordering

414

Sile

nce

rs

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

415

Silencers


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


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


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


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


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


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


–

galvanized 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


–

galvanized 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


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


aluminium

copper

416

Sile

nce

rs


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


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


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


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


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


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

t

Silencers


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

418

Sile

nce

rs


Tolerance limits for ventilation silencersmade from stainless steel, copper, or aluminium

DiameterØdnom (mm)

Sheet thickness tnom (mm)

DiameterØdnom (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)


DiameterØdnom (mm)


M1-E sheet components

419

komoragłośnika badany tłumik

kanał zastępczy

wentylator tłumik wentylatoratłumik wentylatora

komorapogłosowa

Silencers


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

nce

rs


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


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.

silencers - ventilation-alnor.co.uk · silencers are intended to reduce noise levels generated in...

Documents