Industrial ventilation and air conditioning. OBZhD

BASICS OF SAFE LIFE
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Industrial ventilation and air conditioning. Basics of safe life

Fundamentals of Safe Life Activities (OBZhD)

ventilation called organized and regulated air exchange, which ensures the removal of polluted air from the room and the supply of fresh air in its place. Therefore, industrial ventilation is an effective means of ensuring proper cleanliness and acceptable parameters of the microclimate of the air in the working area.

The ventilation system, the movement of air masses in which is carried out due to the resulting pressure difference outside and inside the building, is called natural ventilation. Unorganized natural ventilation, or natural ventilation, is carried out by changing the air in the premises through leaks in fences and elements of building structures due to the pressure difference outside and inside the room and depends on random factors (strength and direction of the wind, air temperature inside and outside the room, type of fences, etc.). . P.). For constant air exchange, organized ventilation is necessary - exhaust without an organized air supply (channel) and supply and exhaust with an organized air supply (channel and non-channel aeration).

Ventilation, by which air is supplied to or removed from industrial premises through ventilation duct systems using mechanical stimulators, is called mechanical ventilation, which has a number of benefits: the ability to vary the required air exchange regardless of the outdoor temperature and wind speed; subject the air introduced into the room to preliminary purification, drying and humidification, heating or cooling; organize optimal air distribution with air supply directly to workplaces; capture harmful emissions directly at the places of their formation and prevent their spread throughout the room, as well as the ability to purify polluted air before releasing it into the atmosphere.

The disadvantage is the significant cost of the structure and its operation, as well as the need for measures to combat noise. Mechanical ventilation systems: general exchange, local, mixed, emergency and air conditioning systems.

To create optimal climatic conditions in industrial premises, air conditioning is used - its automatic processing in order to maintain predetermined climatic conditions in industrial premises, regardless of changes in external conditions and modes inside the premises. To do this, air conditioners are used, which can be local (for servicing individual rooms) and central (for servicing several separate rooms).

Author: Muradova E.O.

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