Ventilation System

Ventilation System (forced ventilation) is used for providing adequate air circulation in factory or commercial premises as per the statutory norms. It comprises of fresh air supply system and exhaust system. Please refer the following table for ventilation air changes per hour.

Fresh/Filtered Air Supply System

It consists of:

1. Centrifugal fan or tube axial flow fan,
2. Air filter unit at the fan suction
3. Ducting
4. Fresh air grills/dampers for supplying fresh air

MOC is MS, GI, Al or SS depending on duty conditions.

Exhaust System

It consists of:

1. Centrifugal fan or tube axial flow fan,
2. Ducting
3. Exhaust grills/dampers for removing stale air

MOC is MS, GI, Al or SS depending on duty conditions.

Please refer typical system layout GA drawing.

Ventilation fresh air changes per hour (ACH)

Type of Building	Air Changes Per Hour	Type of Building	Air Changes Per Hour
Assembly Hall	6-12	Chemical Plant	30-60
Auditorium	4-12	Laundry	12-30
Bakeries	12-20	Paper Mill	08-30
Boiler Room	15-60	Textile Mill	08-15
Brewery	8-30	Packing Room	08-30
Class Room	10-15	Transformer Room	12-30
Engine Room	12-30	Paint Shop	20-30
Factories (Light)	10-20	Ware House	05-08
Factories (Heavy)	20-40	Foundry	10-30

Note: Exhaust air changes would be 25-30% lesser than above values.

Please refer typical system layout GA drawing.

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TAWDE POLLUTECH INDIA PVT. LTD. > Air Pollution Control Systems

Ventilation System