Вентиляция

VENTILATION

Plan:

• Types of ventilation systems.
• Schemes of air exchange in the room.
• Sources of moisture in the room

NEW WORDS

• 1. Ventilation – ventilyatsiya 2. To reduce – kamaytirish 3. Moisture – namlik 4. Odour – hid (yoqimsiz) 5. Pollutant – ifloslanish, ifloslantiruvchi aralashma 6. Contaminant – ifloslanish, ifloslantiruvchi aralashma 7. Volatile – O'zgaruvchan 8. To accumulate – to’plamoq, yig’ish

Ventilation

In the general case, ventilation is called controlled air exchange in the room.

• In the general case, ventilation is called controlled air exchange in the room.
• Ventilation is mainly used to control indoor air quality by diluting and displacing indoor pollutants; it can also be used to control indoor temperature, humidity, and air motion to benefit thermal comfort.
• Ventilation systems are classified as follows:

by purpose: supply and exhaust

according to the method of air movement: natural and mechanical;

Natural ventilation which is uncontrolled air movement through cracks and small holes (infiltration) and through vents such as doors and windows.

by service area: general exchange, local, emergency and anti-smoke;

General ventilation is designed to ventilate the air in the entire room.
General ventilation can also be supply and exhaust.
Local ventilation is designed to supply fresh air to certain places (local supply ventilation) or to remove polluted air from places where harmful emissions are formed
Smoke ventilation is provided to ensure the evacuation of people from the premises of the building in the initial stage of a fire.

Air exchange schemes Top down

when the harmfulness is heavier than air, the top-up scheme is used

Top - top

when harmfulness is lighter than air, top-up scheme is used
Requirement of ventilation systems
Sanitation-hygiene
Economics
Architectural and construction
Production and installation
OPERATIONAL