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August 12, 2017 18:06

Natural ventilation with their hands

comfortable accommodation in a private house or an apartment is determined by many factors.It is no secret that the microclimate in them depends on the circulation of air flows.To really breathe clean air, the construction of housing and its further arrangement is important to carefully consider the ventilation system.If the air outside is quite fresh on the premises advisable to use natural ventilation.With a little work and time, such a system can be set independently.


  • How does natural ventilation
  • features natural ventilation
    • Pros and cons of natural ventilation
  • Construction of natural ventilation with their hands
    • Stages of work
    • Where necessary channels of natural ventilation
  • natural ventilation - photo
  • natural ventilation - video

How does natural ventilation

during the construction of residential buildings of any developed system of natural ventilation according to the principle, similar to winding.Arrange the air intake is easy, open windows and doors - however, in the cold season airing opportunities are largely limited.Furthermore, in some areas due to lack of task windows greatly complicated.

create a stable comfortable microclimate in various premises is quite possible with the help of a natural ventilation system installation, besides it can be installed with a minimum of cost.In a residential house or apartment space in which the air flow is called dry (these include, for example, a bedroom and a living room).Kitchen and bathroom are traditionally rooms, which are characterized by the presence of high humidity mode - hence, are required to organize the removal of humid air.In this case, the house comes dry air and moist displayed, and you can avoid the accumulation of excess moisture and unpleasant odors in rooms.Under the influence of changes in temperature and pressure there is traction, thanks to the natural ventilation through the holes, crevices, vents and ducts inside the premises fresh air enters.Heated light air masses rush out through natural ventilation, in their place comes the cool and fresh air.The effect wind has on the rod, the height and diameter of the ventilation channels that they have restrictions and bends as well as thermal insulation.


should consider a number of requirements to the arrangement of the natural ventilation of the house.It is essential that such a ventilation system provided:

  • presence of a constant movement of air masses in the house - with high-quality supply of fresh air to all rooms;
  • removal of contaminated air from the kitchen, as well as sanitary facilities.

This is required to avoid appreciable cooling air in winter, as well as the occurrence of drafts in the house.

Distinguish following types of natural ventilation systems:

  • channel (with accommodation in the homes of vertical channels) and free channels (such systems are used in industrial premises);
  • constant ventilation carried out by supplying the air flow through the valve system, as well as periodic - with ventilation through any period of time.


natural ventilation is worth noting that natural ventilation arrangement is appropriate when there is really clean air outside.This type of ventilation is optimal for small buildings, placed on environmentally friendly territory - in such cases will not need to use forced ventilation system.Furthermore, it is necessary to take into account the type of materials used in construction.The most natural ventilation is suitable for brick, wood, and stone buildings, as well as for the construction of buildings of expanded clay, ceramic, gas, slag and foam blocks, adobe, or of reinforced expanded clay.

Before installing natural ventilation system it is important to make careful planning, or indoor climate can be far from ideal.In such cases, there may be a variety of unpleasant symptoms (stuffy air, a feeling of heaviness after sleeping people living in the house, as well as the manifestations of their allergies).To avoid penetration through the air ducts outside noise, insects, as well as lint and dust, in making some improvements - for this in the outer walls are mounted supply duct equipped with insulation to absorb noise and mosquito net.In addition, it is worth considering the following - in old buildings air circulation is carried out through the existing gap between the doors and the floor (so-called downcomers holes), as well as through a loosely fitting wooden frames.However, in a residential area had open vents or windows for ventilation.

modern window construction, as well as doors provide sealing of premises, so they often stuffy, the air contains harmful fumes, there is a proliferation of mold.If you do not want to keep the sash windows permanently ajar, to ensure a stable supply of fresh air is required to provide in the window openings in the walls or special intake valves.The flow of hot air masses from the premises allocated for the exhaust pipes, and in its place comes fresh.

Pros and cons of natural ventilation

The advantages of the installation of natural ventilation system include:

  • simple design, due to which the probability of failures and breakdowns reduced to a minimum;
  • no need to purchase special expensive equipment.Mount it, you can achieve substantial savings compared with the installation of the forced ventilation or mixed systems;
  • natural air circulation is perfectly aligned with the work of the climate system in the premises;
  • using elaborate system of natural ventilation can maintain the optimum humidity and adjust the heat in the house, as well as to carry out heating unheated spaces - for example, corridors, stairwells.

as negative natural ventilation is necessary to mention its limited capacity.For the normal functioning of the human body needs a constant supply of fresh air that is not always fully ensure natural ventilation.When not enough active air exchange in the rooms can breed mold and fungus, harmful fumes accumulate allocated building materials, appliances and furniture.In the case of stagnant air masses in the rooms, you can observe the appearance of dampness and accumulation of odors.Furthermore, it is worth noting the dependence on outside air temperature - the lower it is, the colder air coming into the room through the vents (and therefore heating costs increase - in some cases up to 40%).

often to achieve the most effective result is to combine the natural ventilation in the house with the other species - in such cases, in addition to it in places where it is needed (usually in the workplace and sanitary facilities), equipped with a mechanical supply or exhaust mechanical ventilation.


Construction of natural ventilation with their hands

When planning how to make natural ventilation, consider the following.Such a ventilation system in a private house organized by the equipment exhaust ducts and installation of air-supply valves.In the process of construction of buildings will need to provide ventilation channels, so plan their arrangement should be before the start of construction.Depending on the specific conditions required to develop a scheme of natural ventilation and perform the necessary engineering calculations at the design stage.

In apartment buildings the ventilation channels are combined into blocks.In private buildings combine air flows is not necessary, otherwise the functioning of the ventilation efficiency is somewhat reduced.Each channel of the premises should be removed on the roof of headroom.In order to reduce the influence of the wind on the operation of the ventilation system, it should be placed in a certain way relative to the roof surface.On the same floor is more convenient to place the next several channels, combining them into a single riser.Such channel units are usually placed inside the load-bearing wall or parked it.These risers for venting spread of stone or brick, in addition, the ventilation channels can be placed inside the hollow concrete blocks.The wooden frame buildings and ventilation systems equip system of plastic or steel pipes placed in the box.

Stages of work

In fact, the sequence of steps for the installation of natural ventilation with his own hands is reduced to the following steps:

  • perform technical calculations - calculation of the necessary minimum amount of supply and exhaust air in accordance with the sanitary standards.In accordance with the results of calculations to be planned and the amount of height ducts.In your calculations should take into account the number of people who will be in the room, as well as the required volume of fresh air.Performing these calculations easier to professionals;
  • selection of a suitable type and duct section according to the results of calculations.round and rectangular cross-section rigid ductwork is used for everything natural ventilation;
  • estimated development schemes vents placement;
  • choice of places for air intake and installation of equipment;
  • purchase of necessary materials and tools needed for the installation of ventilation;
  • installation of the ventilation system.


Where necessary channels

natural ventilation when planning ventilation arrangement should take into account that the exhaust ducts need to be equipped with the following locations:

  • in the kitchen, bathroom and laundry;
  • in a closet or wardrobe - in cases where they need to go from the living room.If they go out the door in the non-residential premises should provide the supply valve to the window frame or on the wall;
  • in rooms separated from the existing ventilation ducts several doors;
  • exhaust and forced ventilation is required to equip the boiler room;
  • above the first floor, if the door is provided with ladders, ventilation channels should be provided in the above areas - or, in their absence, in the lobby or hallway.If this door is missing, channels exhaust ventilation should be provided in all rooms.

In other areas, in the absence of the exhaust channel, need to equip the intake valves are placed in the window opening or on the wall.It is necessary to provide for exhaust ducts from the premises with high humidity regime.Natural ventilation should also be provided under the floor boards of the ground floor, as well as in the basement space.If you have a basement, which is actively operated and heated, should be equipped with ventilation in it similar to the first floor.It should also consider the following - if the descent into the basement is located inside the house, it must be separated from the living quarters by using a sealed door.

Natural ventilation - photo


Natural ventilation - video