In general engineering industries or godown due to heat load temperature increases in the premises. To provide comfort working condition, it is necessary to ventilate the area so that HVAC Systemtemperature & odor can be controlled to desired level.

In some of the area temperature can be controlled only with ventilation but in hot area where humidity level is low, it is necessary to provide Evaporative cooling system to bring the temperature to desired level.

System capacity is calculated based on heat load & number of air changes required. Pressurization System is generally required to maintain clean manufacturing area or machine room etc. 2 to 3mm pressure is maintained in the area by supplying filtered air in to the room & exhausting naturally through gravity operated damper.

Clean room system:
As per GMP it is necessary to provide clean room system in pharmaceutical industries. It is basically done through properly designed supply & exhaust system.