Airflow Solutions main catalogue

Comparing Values We can all get confused by the variety of units of measure in use. Here are a few helpful conversions. Useful Conversions

Air Flow Solutions

PRESSURE:

TM

N

I

U

T

O

N

U

O

mmH₂0 N/m² (pascals)

Psi

mbar

ins wg

S

NEW

C

Clean air thinking 24/7 365 ...continuous ventilation for a better indoor air quality

25.4

249.089 9.8066

0.0361 0.0014 0.0001

2.4908

1

V

E

1

0.098

0.0393

N

N

A

T I

F

L

N

A

0.1019 703.07 10.197

1

0.01

0.004 27.68

I

T

O

6894.76

1

68.9476

100

0.0145

1

0.4015

● From 10dB(A) the quietest dMEV fan available for toilet, bathroom and utility. Suitable for kitchen too. ● From just over £1.00 per year to run on trickle speed. ● You select 6, 8 or 13 l/sec plus boost with ‘fine tune’ commissioning adjustment option of running rate for optimum extraction. ● Constant air flow - Guaranteed to deliver installed performance. ● The only dMEV fan IPX5 rated for both wall and ceiling installs. ● Timer and Humidity versions. ● SAP Appendix Q eligible. ● LED self diagnostic set up with no loss of functionality if the power fails. ● Complies with Building regulations ● 3 Year warranty.

Air Changes Commercial applications may follow CIBSE recommendations. To specify the volume of air that the fan needs to extract to satisfy the ventilation required, follow this simple procedure. 1. Calculate volume of room in m 3 (H x W x L) i.e. 3m x 2.5m x 2m = 15m 3 2. Multiply by required air changes i.e. Offices = 6 3. Volume x Air Changes = Fan performance

VOLUME:

l/sec

m³/min

m³/sec

cfm

m³ /hr 1.699

0.4719

0.0283

0.0004

1

1

3.6

0.06

0.001

2.1189 0.5885 35.3145 2118.88

0.2777 16.6662 999.972

1

0.0166

0.0002 0.0166

60

1

3600

60

1

VELOCITY:

m/sec

Knots (UK)

ft/min

Km/h

mph

0.005

0.0182

0.0113 2.2369 0.6213

0.0098 1.9426 0.5396 0.8684

1

1

3.6

196.85 54.681 87.9997 101.333

0.2777

1

0.447

1.6093

1

0.5147

1.853

1.1515

1

*Note: For guidance only. E&OE

Location

Air changes/ Hour

Location

Air changes/ Hour

Location

Air changes/ Hour

Location

Air changes/ Hour

Assembly halls

Banks/Building Societies

Glasshouses Gymnasiums

25-60 Mushroom houses

4-8

4-8 2-4 6-8

6-10 6-10

Bakeries

Bedrooms

Offices

20-30

6 min

Bathrooms

Billiard rooms * Boiler rooms

Hairdressing salons

10-15 Paint shops (not cellulose) 10-20

6-10

Billiard rooms *

15-30 Hospitals - sterilising

15-23 Photo & X-ray darkrooms

6-8

10-15 12 min 15-25 10-12

Cafes and coffee bars

Canteens

W ards

Public house bars

10-12

8-12 6-12

6-8

Cellars

Changing rooms main area

Kitchens - domestic

15-20 Recording control rooms

3-10

Changing/Shower area Cinemas & theatres * Compressor rooms

Churches

Commercial

30 min Recording studios

15-20 10-15 10-20

1-3

Club rooms

12 min Laboratories

Schoolrooms

6-15

5-7

Conference rooms

Laundrettes

10-15 Shops and supermarkets

8-12

8-15

Dairies

Dance halls Dye works

12 min Laundries 20-30 Lavatories

10-30 Squash courts

8-10

4 min 10-15

Dental surgeries

Swimming baths

12-15 10-12

6-15

Electroplating shops

Engine rooms

15-30 Lecture theatres

Toilets

5-8 3-5 3-6

6-10

Entrance halls & corridors

Factories and workshops

Libraries

Utility rooms Welding shops

3-5

8-10

15-20 15-30

Foundries

Garages

Living rooms

15-30

6-8

© CIBSE

For further information see pages 74-77

Visit: airflow.com

airflow.com

Customer Services 01494 560800

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