sodeca3 sodeca fans, industrial ventilation

7/30/2019 SODECA3 Sodeca Fans, Industrial Ventilation

1/5

/9/12 ::: SODECA ::: Sodeca Fans, Industrial Ventilation

w w .sodeca.com/en/tecnica2.html#arriba

Es paol C atal Englis h Fran ais Deuts ch P ortugu

Home : Company : Products : Technical Information : Software : New Developments : Price L ist : Contact : Useful Information

Fans - BasicDefinitions

Fan SystemCalculation and Design

Important Standards

Practical Examples

Fan System Calculation and Design

GENERAL FACILITY RENEWALS

Numbe r of renewals/hour, recomme nded depe nding on the type o f facility

(DIN 1946 standard)

Type of

facility/establishmentRenewal/hour

Type of

facility/establishmentRenewal/hour

Wardrobes 4-6 Laundries 10-20

Auditoriums 6-8 Accumulator buildings 5-10

Classrooms 5-7 Airbrushing facilities 10-20

Libraries 4-5Paint stripping

facilities5-15

Painting cabins 25-50 Offices 4-8

Strongrooms 3-6 Swimming pools 3-4

Cinemas, Theatres 5-8 Dipping baths 0-80

Domestic kitchens 15-25 Restaurants - Casinos 8-12

Commercial kitchens 15-30 Conference rooms 6-8

Bathrooms 5-7 Waiting rooms 4-6

Meeting rooms 6-8 Photocopy rooms 10-15

Showers 12-25 Machine rooms 10-40

Foundries 8-15 Meeting rooms 5-10

Garages 6Workshops (high level

of disturbance)10-20

Gymnasiums 4-6Workshops (low level

of disturbance)3-6

Rooms 3-8 Assembly workshops 4-8

Domestic lavatory 4-5 Solder workshops 20-30

Public/industrial

lavatory8-15 Shops 4-8

Laboratories 8-15 Dry cleaners 5-15

Rolling mills 8-15 Changing rooms 6-8

AIRFLOW CALCULATION IN FARMS

Recommended airflow per animal, depending on the type of breed.

m3/h per b reed

Type Age or Weight Summer Winter

Poultry fattening Chicks 1 to 7 days old 1-3 0.1-0.2

Poultry fattening Chicks 1 to 7 weeks old 5-8 0.2-0.3

Poultry fatteningChicks more than 7 weeks

old8-10 0.3-0.5

General FacilityRenewals

Airflow Calculation inFarms

Duct Desing Aids

Loads losscoefficients

Intake Velocities

Carrying Velocities

Recommendedvelocities fo r

ventilation systemsCyclone Separators
http://www.sodeca.com/en/tecnica4.html#arribahttp://www.sodeca.com/en/tecnica.htmlhttp://www.sodeca.com/catalogos/?fl=nhttp://www.sodeca.com/en/interes.htmlhttp://www.sodeca.com/en/tecnica2.html#sv7http://www.sodeca.com/en/tecnica2.html#sv6http://www.sodeca.com/en/tecnica2.html#sv5http://www.sodeca.com/en/tecnica2.html#sv4http://www.sodeca.com/en/tecnica2.html#sv3http://www.sodeca.com/en/tecnica2.html#sv2http://www.sodeca.com/en/tecnica2.html#sv1http://www.sodeca.com/en/tecnica2.html#arribahttp://www.sodeca.com/en/tecnica2.html#arribahttp://www.sodeca.com/en/tecnica4.html#arribahttp://www.sodeca.com/en/tecnica3.html#arribahttp://www.sodeca.com/en/tecnica2.html#arribahttp://www.sodeca.com/en/tecnica.html#arribahttp://www.sodeca.com/en/interes.htmlhttp://www.sodeca.com/en/sat.htmlhttp://www.sodeca.com/catalogos/http://www.sodeca.com/catalogos/?fl=nhttp://www.sodeca.com/en/software.htmlhttp://www.sodeca.com/en/tecnica.htmlhttp://85.152.24.154:8080/Sodeca/action/SodecaAction?method=list&bundle=ResourcesEnhttp://www.sodeca.com/en/empresa.htmlhttp://www.sodeca.com/en/index.htmlhttp://www.sodeca.com/pt/index.htmlhttp://www.sodeca.com/de/index.htmlhttp://www.sodeca.com/fr/index.htmlhttp://www.sodeca.com/en/index.htmlhttp://www.sodeca.com/ca/index.htmlhttp://www.sodeca.com/index.html


2/5



Laying hens

1 a1.5 kg

8-10

0.3-0.5

Laying hens 1.5 to 2 kg 9-12 0.3-1

Laying hens 2 to 3 kg 12-15 0.5-2

Laying hens - 10-15 0.5-2

Piglets 5 kg 8 4

Piglets 10 kg 16 5

Piglets 15 kg 24 6

Piglets 20 kg 32 7

Piglets 25 kg 40 8

Fattening pigs 25 kg 30 4







Fattening pigs 90 Kg 108 13

Fattening pigs 100Kg 120 14

Sows Post-weaning 180 17

Sows Mating 240 23

Sows Gestating 250 25

Sows with litter 10 litter 375 28

Boars - 360 36

Calves 3 weeks 50 5-10

Calfs 2 weeks 100 10-25

Fattening cattle - 150 15-50

Cattle - 175-200 40-60

Fattening sheep From 20 to 25 Kg 90-100 10-15

DUCT DESIGN AIDS

3.1 Designing elbow joints

3.2 Designing elbow joints with lateral joints

3.3. Designing the fan air inlet

3.4. Designing changes in duct cross section

3.5. Designing outlets with a chimney

3.6. Types of suction extractor hoods

3.7. Examples of optimal air inlets in facilities

LOAD LOSS COEFFICIENTS IN DUCTS AND ACCESSORIES

These coefficients are used to calculate the loss of load using the dynamic pressure method.
http://www.sodeca.com/en/tecnica2.html#arribahttp://mm_openbrwindow%28%27../amplia_img/sv7.html','','width=514,height=550')http://mm_openbrwindow%28%27../amplia_img/sv6.html','','width=514,height=550')http://mm_openbrwindow%28%27../amplia_img/sv5.html','','width=514,height=550')http://mm_openbrwindow%28%27../amplia_img/sv4.html','','width=514,height=550')http://mm_openbrwindow%28%27../amplia_img/sv3.html','','width=514,height=550')http://mm_openbrwindow%28%27../amplia_img/sv2.html','','width=514,height=550')http://mm_openbrwindow%28%27../amplia_img/sv1.html','','width=514,height=550')http://www.sodeca.com/en/tecnica2.html#arriba


3/5



This method is based on the fact that all of the load losses, due to friction in ducts and strength due to

parts coming away in accessories depend on the dynamic pressure, and can be calculated by multiplying the

dynamic pressure by a friction loss factor.

To obtain the dynamic pressure the following formula should be applied:

Where V is the velocity at which the air flows in the duct.

4.1. Loss coefficients in extractor hoods

4.2. Loss coefficients in inlets

4.3. Loss coefficients in elbow joints

4.4. Loss coefficients in joints

4.5. Loss coefficients in cowls

INTAKE VELOCITIES

The intake velocity is the m inimum air velocity caused by the ho od required to collect the air and carry the

contaminating fluid towards it. The air velocity achieved depe nds on the sucked a irflow and the surface area of

the ex tractor hood.

CALCULATION TABLE

Examples of airflow calculations depending on the distance between the extractor hood and the

contaminating fluid:

Example 1 Example 2

CARRYING VELOCITIES

The carrying velocity of different materials depends on their size, density and the form of the material

(Dalla Valle)

6.1. Vertical ascent velocity:

6.2 Horizontal movement velocity:

V = Velocity, m/s
http://www.sodeca.com/en/tecnica2.html#arribahttp://mm_openbrwindow%28%27../amplia_img/velocidadcaptura3.html','','width=500,height=580')http://mm_openbrwindow%28%27../amplia_img/velocidadcaptura2.html','','width=500,height=570')http://mm_openbrwindow%28%27../amplia_img/velocidadcaptura1.html','','width=600,height=320')http://www.sodeca.com/en/tecnica2.html#arribahttp://mm_openbrwindow%28%27../amplia_img/co5.html','','width=600,height=550')http://mm_openbrwindow%28%27../amplia_img/co4.html','','width=600,height=353')http://mm_openbrwindow%28%27../amplia_img/co3.html','','width=499,height=550')http://mm_openbrwindow%28%27../amplia_img/co2.html','','width=468,height=560')http://mm_openbrwindow%28%27../amplia_img/co1.html','','width=468,height=560')


4/5



s = Density of the ma terial.

d = Mean diameter of largest particle, mm.

6.3 Load loss through mixture friction:

Fm = Load loss through m ixture friction:

Fa = Air load loss

Ws = Solid m ass

Wa = Air mass

RECOMMENDED VELOCITIES FOR VENTILATION SYSTEMS

Function typePublic buildings

(m/s)

Industrial plants

(m/s)

Outside air intake 2,5-4,5 5-6

Air cleaners 2,5 2,5-3,0

Fan heater connection 3,5-4,5 5-7

Main ducts 5,0-8,0 5-12

Derivations and ascending branches 2,5-3,0 4,5-9,0

Registers and supply grilles 1,2-2,3 -

Supply openings - 1,5-2,5

Supply grilles near to floor 0,8-1,2 -

Ascending tubes 2,5-3,0 45-9,0

Main ducts 4,5-8,0 6-12

CYCLONE SEPARATORS

STANDARD MEASUREMENTS FOR CYCLONE SEPARATO RS

CYCLONE SEPARATION FACTOR (S)

V = Tangential velocity

r = Radius of the cyclone = A / 2

g = Earth gravity acceleration
http://www.sodeca.com/en/tecnica2.html#arribahttp://www.sodeca.com/en/tecnica2.html#arriba


5/5



C tra. de Berga, Km 0,7 - 08 58 0 Sant Q uirze de Besora (Latitude: 4205 56 N - L ength: 0212 33 W) BARCE LON A Tel.: 34 938 529 111 - Fax:

34 938 529 042

Legal Warning A ccordance with W3C XHTML 1.0 C SS 2 .0
http://jigsaw.w3.org/css-validator/check/refererhttp://validator.w3.org/check/refererhttp://www.sodeca.com/en/tecnica2.html#http://www.sodeca.com/en/tecnica2.html#arriba

sodeca3 sodeca fans, industrial ventilation

Documents