textile air distribution system_eng[1]

8/7/2019 Textile Air Distribution system_eng[1]

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english


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MATERIAL LIST

MAINTENANCE & WARRANTY

3

12

7

9

10

5

19

18

AIR DISTRIBUTION METHOD

INSULATED DUCT

LENGTH

TYPE OF ENDING

SPECIFICATION

MEMBRANE DIFFUSER

AIRFLOW REACH

I.

X.

VII.

VIII.

IX.

4AIR OUTLETII.

12TEXTILE NOZZLEXI.

13XII.

III.

V.

XV.

XVI.

14XIII.

6SECTION AND SIZEIV.

16XIV.

CONTENTS

7PRESSUREVI.

8

www.prihoda.eu

TENSIONING SYSTEMS

OTHER EQUIPMENT

INSTALLATION


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II. AIR OUTLET

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V

B

C

A

D

Air outlet through microperforation

E

Flow brought into the diffuser through any

of the ends or through the entry adapter exits

in any of the below described manner:

V

air outlet througha permeable fabric

air outlet throughmicroperforation

air outlet throughperforation

air outlet througha textile nozzle

air supply

air outlet throughan adapter

Always V = A + B + C + D + E

Any of the values A, B, C, D, E can be zero

Air outlet through perforation Air outlet through a textile nozzle


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III. AIRFLOW REACH

mic

roperforation

perforation

directional

m

icroperforation

textilenozzle

0,0 - 1,5 m*

0,2 m/s

0,2 m/s

0,0 - 3,0 m*

0,2 m/s

0,2 m/s

3,0 - 12,0 m*

10,0 - 30,0 m*

* The airflow reaches vary in dependance on static pressure in the diffuser

An example of airflow pattern created by the

designing of company Prihoda s.r.o.software

Textile diffusers are an all purpose tool for air distribution. The textile nozzles have extended possibilities of

air distribution by means of the textile diffusers. Nowadays we are covering the entire range of airflow

eaches used at real applications.


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IV. SECTION AND SIZE

B

BS

The basic version, easy maintenance, preferentially

recommended.

Use where there is not enough space for circular

diffuser and in exacting interiors.

Use where there is not enough space for circular

diffuser, in exacting interiors and if the diffuser is to be

installed in a corner of a room.

The shape can be retained only by means of a special

structure holding at least all the corners of the diffuser.

The fabric bulges aside the structure. The structure is

used to attach the diffuser to a four-cornered pipe

mainly. In the case of a four-cornered pipe the diffuser

is attached by means of a flange.

HALF ROUND

QUARTER ROUND

SQUARE

CIRCULAR

HQSGSC

SEGMENT

SECTOR

Use where there is not enough space even for a

half-round diffuser.

Use where a quarter-round section cannot be used

because of a nonstandard construction of a ceiling.

C

We produce also transitional parts among these sections.

The number is the diameter of a round and a half-round diffuser, the chord of a segment diffuser,

the radius of a quarter-round and sector diffuser, the edge lengths of a square connection.

Basic series of A and B values:100, 125, 160, 200, 250, 315, 400, 500, 630, 710, 800, 900, 1 000, 1 120, 1 250, 1 400, 1 600, 1800, 2000.

Any size (100 mms at least) can be produced, according to a concrete demand always with thetolerance max. 3%.

It does not apply to a connecting part, which is always by 10-15 mm bigger than the given value.

In general, textile diffusers are used at similar flow speeds as the traditional ducting. The maximum useful

speed is limited firstly by aerodynamic noise in relation to the place of use. Further limitations are

represented by flow turbulences which might cause vibration of the fabric. Specific conditions of flow,

static pressure and weight of the fabric used must be taken into account. Please contact us for correctdimension specification.

Selection of the right dimension of textile diffuser

We distinguish six different cross sections of the diffuser:


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VII. TYPE OF ENDING

~ (100-200)

detail

BEGINNING BLANKING

ZIP

HEMMING

SUTURE

F

Type of ending details

H B

Z S

blankinghemming

zip

detail suture

beginning


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VIII. SPECIFICATION

C710/10000 FB M EQS/PMS-2F NMM/LG + INC710F EQr TP + 2OUT(2xC500Z) TP +C710/10000 FB M EQS/PMS-2F NMM/LG + INC710F EQr TP + 2OUT(2xC500Z) TP +

+ 710/R800 Arch-90/4 SS +DCC800-710/500 F +TYp/IN/PL + 2DMr + UI+ 710 /R800 Arch-90/4 SS +DCC800-710/500 F +TYp /IN /PL + 2DMr + UI

(1)section

size

length

type ofending

(2) e (3)qualizer

membranediffuser

material (4)

installationtype (5)

no mounting material

colour(6)

inlet adapter(7) outlet adapter(8)

arch (9)

reducer(10)

reinforcingelements (11)

2xdamper

uniforminginsert

tapered portion

Only simple diffusers can be described by a specification thoroughly. Specification is used as an

approximate definition. It is not sufficient to place an order for a diffuser. A technical drawing or a detailed

characterization are usually necessary.

1. Section:

2. Type of ending:

3. Equalizer:

4. Material:

5. Installation type:

6. Colour:

7. Inlet adapter:

8. Outlet adapter:

9. Arch:

10. Reducer:

11. Reinforcing elements:

C - circular, H - half-round, Q - quarter-round, SC - segment, SG - sector, S - square

F - free beginning, Z - zip, H - hemming, S - suture, B - blanking

EQ - cone, EQS - star , EQC - cylinder, r - removable

Permeability: P - permeable, N - non-permeableWeight: M - medium, H - heavy, L - lightCharacteristic: S - standard, E - excellent fire resistance, I - increased fire resistance,

B - antibacterial, F - foil

WH - white, BL - blue, LB - light blue, LG - light grey, DG - dark grey, YE - yelow, GR - green,RE - red, BC - black, SP - special, TR - translucent, GY - grey

C(section)710(size)F(type of ending)EQ(equalizer)

2(number)C(section)500(size)Z(type of ending)

710(size)/R800(radius) Arch-90(angle)/4(number of segments) SS(type of ending)

D(reducer)C(section)C(section)800(first size) -710(second size)/500(length)F(type of ending)

TY - tyre, BR - braces, p - without tyres-only velcro, r - removable, IN/OUT,PL/ST - plastic/stainless


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IX. MEMBRANE DIFFUSER

heating cooling

Detail of membrane diffuser Flap and servomotor detail

Two kinds of diffuser are combined in one product. A membrane, which is made of flimsy impermeable

fabric, is sewed horizontally in the centre of a diffuser. The beginning of the membrane is attached to a flap

controlled by a servomotor. It covers either the top or the bottom half of the diffuser. While heating, the

membrane covers the top half of the diffuser and the air is diffusing through the row of openings

downwards. The membrane covers the bottom half of the diffuser and the air is diffusing upwardly through

permeable fabric / fabric modified by means of microperforation while air-cooling. The maximum allowed

lengthwise air velocity in the membrane diffuser is 6,0 m/s. The membrane could be damaged at higher

velocities.

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Detail of membrane diffuser

perforation

microperforation

Installation of membrane diffuser Detail of servomotor installation

Heating position Cooling position

Servomotor 24V or 230V.

THE DIFFUSER: The membrane covers one half of the diffuser and uncovers the other one.

membrane

microperforation

THE FLAP: Is used to switch over between the two modes. The flap is made of PMS or PMI fabric

(according to fire resistance), inner construction is made of galvanized steel. The length is

always 400 mm.

D 630 mm

servomotor24V(220V)

servomotor24V(220V)

The flap D630 mm is hung in 2 points.

outside

D+68

inside outside

row of holes

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X. INSULATED DUCT

Diagram of noise reduction in frequency bandswith use of insulated ducts

14,0

12,0

10,0

8,0

6,0

4,0

2,0

0,0

63 125 250 500 1000 2000 4000 8000

XI. TEXTILE NOZZLE

By means of the textile nozzle the transported air can reach longer distance than by means of the

perforation.Depending on the static pressure and temperature difference the airflow reach can be even

longer than 20 m.

Insulated duct

NOISE ABSORBER + INSULATED DUCT

10

d

l

damper

textilenozzle

d < 200 l = 100d

2d > 200 l =d min. = 80 mm

Textile nozzle Turnable textile nozzle

Cut of insulated duct Textile nozzle

It is used for reduction of thermal losses with overcoming

of non-air-conditioned sections between the machineroom and the room being solved. As insulations there is

used a 4 cm layer of non-woven polyester fabric that is

sewn in between inner light-weight and outer usually

medium-weight fabric. As outer layer there can be used

any of our materials. Sewing together rather reduces

thickness of insulation to approx. 20 - 30 mm.

We deliver

standardly 2 m pieces in all diameters including shaped

pieces. One reinforcing plastic ring is installed each 2 m.

The insulated duct reduces noise very effectively asdocumented in measurement of a 1 m long duct with

diameter 500 mm.

The

achieved thermal resistance is 0,62 m .K/W.2 Noise reduction

Damping[dB]

Frequency [Hz]

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XII. TENSIONING SYSTEMS

An application of screw tensioner helps to smooth out both crumpled fabrics, wrinkles which haveappeared due to packing and transportation and a small non-precision of sewing. Elasticity of fabric

enables its tensioning attended by prolongation by max. 1%. For that reason installed unstrained diffuser

is shorter than value given on the draft and the correct length is achieved by tensioner. These tensioners

can be used for all the installation variants with aluminium profiles and enlarged strip or the shortest

(32 mm) hooks. Installation procedure is described in mounting instructions.

Concept of tensioning

max. 0,5 %

aluminium profile

air input

20 max. 0,5 % 20

Diffuser after tensioning

Diffuser before tensioning

textile diffuser

SCREW TENSIONER IN THE PROFILE

TENSIONING SYSTEMS IN BLANKING

19

L< 10 000 max 5000

anchored into the wall in the axis of the diffuser

max. 1% L

L< 5 000

max. 1% L

anchored into the profile on the ceiling (wall)

Use of tensioning system in blanking Detail of tensioning systemsin blanking

Screw tensioner in the profile

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XIII. INSTALLATION

Installation

number

Scheme of cross

section

Type of

suspension

Additional accessories

0

1

2

3

4

5

6

7

8

without mounting

material and hooks

wire

wire

profile

profile

suspended

profile

suspended

profile

tensioner

profile

D, F, K

D, F, K

B, C, G

D, F, Hcan be added to any

other installation

9 velcro

A, B, C, G, I, D, E, F, K, L

A, B, C, G, J, L, H

A, B, C, G, I, D, E, F, K, L

A, B, C, G, L, H

Example of installation5AEIL 2D 8ACL

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A

B

C

D

E

F

G

H

I

enlarged strip instead of hooks

plastic profile

aluminium profile with aluminium hangers

stainless wire and stainless mounting material

thread bar

plastic coated wire and stainless mounting material

stainless profile

tensioner at blanking

reinforced aluminium profile

untagged suspension by hooks and aluminium profile or by wire

OVERVIEW

OFADD

ITIONAL

ACCESSORIE

S

J velcro

K

L

galvanized chain

screw tensioner in the profile

plastic profile (B) aluminium profile with hangers (C )

hooks aluminium profile wire

wire hangers (D, F) thread bar (E)

Details of additional accessoriesreinforced aluminium profile (I) galvanized chain (K)

enlarged strip (A)

velcro (J)

stainless profile (G)

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XIV. OTHER EQUIPMENT

Detail of brace

1. TYRES

2. BRACES

Diffuser with braces inflated Diffuser with braces - without air supply

Circular diffuser - comparison of installations

Single suspension Double suspensionSingle suspension

with bracesSingle suspension

with tyres

velcro fastener

easy installation of braces

80% of circle area

inflated without air supply

obru

Detail of braces fixing Detail of tyres inside of diffuser

Braces keep the shape of a circular diffuser when it is not inflated. They are made of fireproof plastic, the

usage possibilities are illustrated in the pictures. Braces are fixed inside diffusers with Velco fasteners, they

can be removed before and reinstalled after maintainance easily. Braces are cheaper substitute to tyres.

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They are used to keep the shape of a circular diffuser when it is not inflated. They are made of stainless

wire or plastic tube, a standard spacing is 500 mm. The tyres can be placed either inside or outside of the

diffuser. They are fixed by Velcros in order to allow easy removing for maintanance.


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3. EQUALIZER

cone made of sieve

4. DAMPER

Damper is a blunt cone made of a permeable fabric. The lesser diameter of the cone is adjustable by

means of a string with an arresting stop. A damper opened to its maximum equivalent to the diameter of

the diffuser provides zero pressure loss. Complete tightness, on the other hand, provides the maximum

local pressure loss. Having unfastened a neighbouring zipper you can modify adjustment of the damper

easily.

It is the device for modulation of turbulences in the airflow, mostly made from a sieve.

"star" made of sieve sewnin a diffuser sieve cylinder with a tyre

"star" "cylinder"EQ EQS EQC

Detail of EQ Detail of EQS Detail of damper

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XV. MAINTENANCE & WARRANTY

40

40

PMS, NMS, PMI, NMI

PLS, NLS, PLI, NLI, NHI, NHE

other fabrics, other equipment, installation with Velcro,mounting material and other parts of diffusers

10 years

2 years

1 year

Material Warranty period

P

N

All our diffusers are made of high-quality resistant materials without natural fibres. The used material is specified during

technical clearing of the order.

The process of washing:

Strictly follow the maintenance symbols indicated on the labels sewn near the zips in the diffusers.

1. Wash the diffusers with common detergents (dosing according to the directions for use), the effect of washing is

enhanced if the diffuser is turned inside out. We advise you to repeat the washing up to four times acc. to level of

contamination, or to use more powerful washing powder. A special detergent (we will recommend one by request

according to the particular dirt) should be used if the fabric is badly soiled.

2. Use a disinfectant only if it is essential according to the local service instructions. The chemical composition of the

disinfectant must not harm the diffuser fabric (see maintenance symbols). Observe the producer`s dosing instructions.3. Rinse the diffusers in clean water.

4. Spin-dry the diffusers gently, install them and finish drying by the air flow from the ventilator.

Symbols key:

max. temperature for washing 40Cnormal mechanical action normal rinsingnormal separating

gentle washing in a washing machine,maximum temperature 40 C, gentle mechanical action,rinsing in water cooling down, gentle spin-drying

washing only by hands product must not be washedin washing machine

max. temperature 40C cautious handling

product must not be whitenedwith detergents disengaged chlorine

dry in a drum-drying machineuse lower temperature of drying

product can't be dryed in a drum-drying

ironing within of max. temperatureof ironing surface 110C, cautiouswith steam ironing

product must not be ironnedsteaming is inadmissible

product must not be dry cleaned the stainsmust not be removed by organic solvents

product can be dry cleaned with tetrachlorethen,monofluortrichlormethan and all solvents mentioned withsymbol F usual cleaning progresses are without any limits

A claim for repairs of the goods underwarrant y expires i f t he mount ing andmaintaining instuctions supplied with theg oo ds h av e n ot b ee n f ol lo we d. A ndfurthermore, every diffusers has sewn inwashing labels specifying basic maintenanceinstructions valid for that particular fabric.

A diffuser teared forcibly cannot be a subjectof a complaint. Splitting of seams and tearingof the fabric or hanging items caused byoverpressure or surge of air-flow can besubjects of a complaint only if in operation,the real parameters (flow and overpressure)are equal to those calculated.

Diffusers made of PMS, PMI, PLS, PLI, NMS, NMI, NLI and NLS materials can be washed in a common industrialwashing machine. NHI, NHE and NLF materials require hand washing. If a diffuser is equipped with tyres, braces

or tensioning systems, then these fixed components need to be taken out before washing. Outer induction

contamination can be usually removed by exhaustion using a vacuum cleaner and washing is thus not necessary.


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XVI. MATERIAL LIST

Designation Permeability Weight Material

PLS/NLS yes/no light 100% polyester

PLI/NLI yes/no light 100% polyestermodified

PMS/NMS yes/no medium 100% polyester

100% polyethylene

100%+ 2x

fibre glasspolyurethane

no

no

light

PMI/NMI yes/no medium 100% polyestermodified

100% polyester +2x PVC + Sb2O3

heavy

NHE

NLF

NHI

no heavy

antibacterial

numberofstandard

colours

fireresistance

highstreng

th

washingin

washing

machine

cleanroom

s

specialcolours

always upon request impossible

M

foilF

standardS

increased f. r.I

highest f. r.E

~80 g/m2L

H

permeableP

impermeableN

~280 g/m2

~480 g/m2

Characteristic

Structure of fabricsPMS, PMI, NMS, NMI PLS, PLI, NLS, NLI NHI NHE NLF

9

9

9

9

2

4

7

p.o. - fire resistance

Textile materials

The material used is essential for correct function of the diffusers that meets requirements of technical

regulations and provides sufficiently long service life. Our products are manufactured only of syntheticmaterials and their basic overview can be found in the following table.

Key to label materials


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Colours: The following colours are being supplied

WH

RAL 9016~

white

LG

PANTONE 420

RAL 7035~

light grey

DG

PANTONE 424

RAL 7037~

dark grey

YE

PANTONE 135

RAL 1017~

yellow

GR

PANTONE 341

RAL 6024~

green

RE

PANTONE 187

RAL 3001~

red

LB

PANTONE 2915

RAL 5012~

light blue

BL

PANTONE 7462

RAL 5005~

blue

BC

PANTONE 419

RAL 9017~

black

Prihoda s.r.o.Za Radnici 476539 01 HlinskoEU - Czechia

[email protected].: +420 469 311 856fax: +420 469 311 857

For exact colour shades, please, see our shadecard for that particular type of fabric, which can be orderedat [email protected]. Special colours, which are not listed above, consult with our authorized representatives.

textile air distribution system_eng[1]

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