Technical Specification - 360mm

MODEL

Turbine size
Neck size
No. of Vanes
Weight approx.
One unit vents area of Ceiling/Rotating space

WIND VELOCITY

04 Kmh.
08 Kmh.
13 Kmh
18 Kmh

“BIG BIRD – 360MM”

450mm
360mm
23
3 Kg
40 - 60 sq. meters.(Approximately)

EXHAUST CAPACITY

C.F.M(Cubic Meters per Minute)
15
27
42
52

powdercoated

Quick Calculation

Calculations to decide the number of BIG BIRD VENTILATORS.

1. Determine the volume of the building in Cubic Meter. (Fig. 1)

Volume of section A = 0.5 x L x W x Ha (all dimensions in Meters)

Volume of section B = L x W x Hb (all dimensions in Meters)

Total building volume = Volume of section A + Volume of section B

Note: For factories, the combined volume A + B should be used.

2. Select the number of ventilators required:

METRIC =

 V x A/ch
EX/c x 3.6

Where:

V = Volume of building or roof space

A/ch = Air changes per hour (refer ACH table)

EX/c = Exhaust capacity of ventilator (refer Exhaust Capacity table above)

ACH TABLE

Recommended Air Change Per Hour

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 sterilizing wards
Commercial kitchens
Laboratories
Launderettes
Lavatories
Libraries
Offices
Photo and X-ray darkrooms
Recording studios
Restaurants
Schoolrooms

4 - 8
10 - 20
3 - 4
10 - 12
5 - 10
5 - 8
8 - 12
6 - 8
3 - 5
6 - 8
6 - 12
10 - 15
4 - 6
10 - 20
8 - 12
15 -25
8 - 15
3 - 5
4 - 8
10 - 15
10 - 12
6 - 10
2 - 4

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

10-25
5-15
10-20
10-25
10-20
10-25
10-20
20-20
5-10
10-25

Calculate Technical Specification for BIG BIRD 530 mm