In five-story residential buildings, popularly called "Khrushchev", a natural ventilation system is equipped.
Features of the ventilation system in Khrushchev
The ventilation system in Khrushchev is a set of ventilation ducts going from each apartment. These channels are combined into a shaft or channel located in the attic of the house. Most houses are not higher than 4 floors and today are equipped with a similar ventilation scheme in Khrushchev.
Some buildings are equipped with a trunk or a vertical channel, from which mines to apartments move in different directions. In such a mine, air is drawn in from the living room (toilet, bathroom, kitchen) and through one floor is introduced into the vertical channel. A similar ventilation scheme in Khrushchev shows better results than described above. She fully meets the requirements of firefighters. The efficiency of the hood is less dependent on the outdoor temperature or wind.
Technical standards allow the equipment of one prefabricated vertical channel for toilets and kitchens, if the branch is attached to the channel 2 meters higher than the ventilation grille of the room.
The ventilation scheme in Khrushchev
The ventilation device in Khrushchev is a ready-made concrete blocks mounted on top of each other. Most often, problems with ventilation in Khrushchev are associated with poor connection of ventilation units between floors. Leaky joints reduce traction. Therefore, from some apartments, air and smells are transported to others.
Factors of ventilation efficiency in Khrushchev
The following factors affect the efficiency of natural ventilation in a five-story building:
- Storeys;
- Dimensions of windows, their design (plastic or wooden);
- Location of rooms in apartments;
- Tightness of doors and windows.
The presence of a small draft improves ventilation in Khrushchev and is even provided for by technical conditions. The most undesirable conditions that worsen the work of ventilation, is the heat in the street in combination with open windows.
In this case, the ventilation is completely disrupted, the air moves from the apartments to the stairwells or to the ventilation ducts of the neighbors.
The ventilation device in Khrushchev was calculated based on the fact that tenants will have at least one open window in the apartment, the temperature in the street is about +5 degrees. In this case, a change in these conditions changes the operation of the exhaust ventilation.
In addition to weather conditions, the ventilation system in Khrushchev is affected by the density of closed doors.
