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CALCULATION
Determine the quantity of Tornado turbine ventilators required to ventilate a specific application effectively.

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Step 1


Calculate the volume of the building.
1)Length (m):
2) Width (m):
3) Height (m):
4) Total volume m3: Press to calculate total volume

Step 2


Determine the rate of air flow required for your specific application.

The rate of air flow is measured in air changes per hour.
Air changes per hour is the volume of air that needs to be replaced with fresh air every hour. Determine the rate of air changes required for your specific application indicated in the ACH Table. (Refer to ACH table below calculation table).
e.g. Factories and Workshops = 4 - 6 air changes required. Average air changes = 5.

Step 3


Multiply the volume (step 1) by the number of air changes required (step 2).
1) m3:
2) Air Flow Rate:
3) = m3 Total volume of air: Press to calculate total volume

Step 4


Determine the size and quantity of Tornado turbine ventilators required for the above application.

Total volume of air (step 3) divided by the extraction capacity of the specific Tornado Turbine.
1) m3:
2) Tornado Size Select preferred Tornado size
3) = Units Press to calculate total units

Note:
It is recommended that the Tornado turbine ventilators to be equally distributed across the ventilation area to ensure effective ventilation.
Please use this table as a guideline to your calculation
ACH TABLE
Ventilation guidelines
Commercial Premises ACH Industrial Premises ACH

Assembly rooms
Bakeries
Banks
Cafes and coffee bars
Canteens
Cinemas and theatres
Conference rooms
Dancehalls
Entrance halls
Garages
Gymnasiums
Hair dressing salons
Hospital sterilising wards
Commercial kitchens
Laboratories
Launderettes
Lavatories
Libraries
Offices
Photo and X-ray darkrooms
Recording studios
Restaurants
Schoolrooms

4 - 8
20 - 30
3 - 4
10 - 12
5 - 10
5 - 8
8 - 12
6 - 8
3 - 5
6 - 8
6 - 12
10 - 15
4 - 6
15 - 30
8 - 12
15 -30
8 - 15
3 - 5
4 - 8
10 - 15
10 - 12
6 - 10
2 - 4

Boiler rooms
Dye works
Electroplasting shops
Engine rooms
Factories and workshops
Foundries
Laundries
Paint shops
Stores and warehouses
Welding shops

20 - 30
10 - 15
10 - 15
20 - 30
3 - 6
30 - 60
30 - 60
30 - 60
3 - 6
15 - 30
 
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