Standard sanitary and hygienic standards require a continuous inflow of fresh air into the living quarters and the withdrawal of exhausted air outside. If the house or apartment is equipped with gas heating, the presence of supply and exhaust ventilation is mandatory. Devices that remove air are equipped with bathrooms, kitchens, fireplace rooms, saunas and similar rooms. Small one-story houses are equipped with systems that provide natural air circulation. However, regardless of the method of air exchange, all systems are mainly duct type, using pipes for ventilation or air ducts.
They are a fairly voluminous type of engineering communications, therefore, when installing a ventilation system that is carried out during the construction of a building, air ducts are laid in the wall, which preserves the integrity of the interiors. If the building has already been built, and the need for a modern ventilation system is ripe, you have to use outdoor ventilation pipes. For eachThe room has its own separate air duct. All of them are connected by one outlet channel. If the premises are too distant from each other (for example, in a country cottage), it is possible to use a different wiring scheme. In any case, according to building codes, ventilation pipes should not cross gas, water and sewer communications. It is also forbidden to use air ducts for laying a sewer pipeline.
Earlier, the air duct channels were laid out with bricks, which was very laborious. Later, when installing the system, they began to use pipes for ventilation made of galvanized steel or rolled aluminum. Recently, however, a variety of polymer products have been actively introduced into construction, including plastic products, which are actively replacing their metal predecessors.
both of them must meet the general requirements for ventilation ducts: be absolutely hermetic, freely pass the air flow calculated according to the project, do not exceed the noise level standard, have thermal insulation and fire resistance, and in addition, correspond to the design of the premises as much as possible. Flange connections provide the construction of both metal pipes and PVC products with a system of any level of complexity. However, in the area of roof structures, metal pipes require mandatory insulation, which polyvinyl chloride does not need at all.
If we were talking about the arrangement of an air exchange system associated with hazardous production, the presence of non-combustible galvanized pipes would be indispensable. But in housing with standard operating conditions, an uncomfortable appearance and an increased noise level during turbulence put a bold cross on the metal. However, if it is required to lay an exhaust pipe near the chimney, the polymer product is rejected due to insufficient fire resistance. from steel and aluminum, they do not create the effect of additional aerodynamic drag. It is corrugated plastic products that installers prefer when installing a ventilation system in dachas and country cottages: they require a minimum of connections and fasteners, which ensures a relatively short time of work performed.
So, metal and PVC pipes of ventilation systems during their installation in in many ways they are able to complement each other favorably, ensuring compliance with both sanitary and hygienic and building codes.
