Why and what is the air duct pollution?
In the air around us there are always small garbage particles, which can fall into Ventkanal. For the exhaust air duct it is:
dust;
fat (which removes through the kitchen hood when cooking);
chemical compounds formed when using household chemicals (detergents, washing powder) and smoking;
At least - other small particles that can get into ventilation.
Since the air in the apartment is usually clean, then the exhaust vent ripple is polluted relatively slower than the trimming.
If we are talking about ventilation of the supply (running from the street to the room) - then the contamination rate will be tangible above. The reason is that the street air is much dirtier room (if it comes to the city).
Contaminated with fat air duct
Contaminated with fat air duct
In addition to dust, it contains:
pollen;
Harmful connections from car exhausts, emissions of industrial enterprises.
In addition, the channels of the supply ventilation can be clogged and larger garbage: leaves, poplar flock, small insects. Of course, if the ventilation lattice will stand at the inlet to the air duct - this can be avoided, but the air with a mass of impurities will still pass and contaminate the system.
Separately, it should be said about the ventilation of natural and ventilation forced. In the first case (when the air through the air duct passes without using fans) pollution will occur more slowly. In the second case, when the air through the system passes more - and it will also be polluted faster.
What exactly is polluted faster?
The section of the air ducts - even in small private buildings - is quite large, so in direct segments, pollution is although it goes, but very slowly.
Whereas are faster, places are polluted, where it is small particles to "catch":
bends;
Ventkanal branching;
diameter drops;
filters (meaning not the filter element itself, and the sections near it, where the filter housing is embedded in the ventiy system);
valve;
fans;
heat exchangers, heaters, coolers, humidifiers, dryers;
Lattices, anemostats, diffusers.
Air duct before and after cleaning
Air duct before and after cleaning
Around these places dirt accumulates faster. Later, when the "problem" sections of the pollution layer had already forcent - it begins to expand further along the air duct.
What is dangerous air ducts?
Ventilation pollution is dangerous for several reasons:
The internal section of the ventilation channel is reduced. As a result, less air passes through the air duct.
Accelerated further ingrowth of the dust dust. If small particles were able to hooked somewhere - in this place of deposits will grow faster and faster.
The load on the fans increases, which means that their wear is accelerated.
The microclimate indoors deteriorates: the level of humidity increases, malicious connections may be present in the air, which cannot be quickly removed, it becomes hotter and stroke into the room. As a result, it is harming both the human body, and the room itself (the risk of fungus, mold increases).
The risk of reproduction of pathogens of microorganisms is increasing, for which the dirty medium is favorable. The most common consequence in humans is an exacerbation of allergies.
If we are talking about ventilation not in an apartment or house, but on a non-industrial facility, then the deposition of dust in the air duct is also fire and fire. After all, dust easily flashes, and therefore - in the case of ignition, the air duct can easily become one of the ways of spreading fire on the building.
Especially dangerous such a fire can be at objects where there are some combustible substances in the working area (and therefore they will be postponed in the ventilation system). At the same time, keep in mind that the dust can be flared out not only from open fire: the reason can be the spark that arose due to a static charge, which has accumulated an air duct.
