Fresh air and indoor climate are not possible without a ventilation system. Its mandatory elements are ventilation pipes.
They must meet certain requirements:
- be airtight;
- maintain the air flow rate in accordance with the established technical requirements;
- do not exceed the noise level;
- maintain the air pressure specified in the design documents;
- Do not occupy a large amount of space.
Ventilation pipes are used indoors to evenly distribute supply air and remove contaminated air.
The characteristics of the ventilation network are sectional area, stiffness, sectional shape. The ventilation pipe works efficiently at a good air flow rate, which depends on the specified parameters.
Types of pipes
Design documents determine which ducts are used - rigid (galvanized) or flexible (frame).
Rigid air ducts are used in enterprises, offices, cultural and entertainment complexes, various institutions and organizations where active air exchange is provided.
Plastic ventilation pipes are often used in small rooms with a complex configuration.
These pipes have recently become widespread for a number of reasons.
1. Ventilation pipes made of plastic more reliably maintain tightness due to the simplified connection of the duct elements.
2. Plastic ventilation for shops, cafes, restaurants, entertainment centers, fitness centers, hospitals and clinics is more appropriate, as these rooms have high demands on air quality and composition.
3. To ensure the necessary air velocity, the ventilation pipes are additionally equipped with fans with sound absorbers. With pipe diameters above 160 mm or 225 mm, the air ducts are noisy.
4. The physical characteristics of plastic provide a higher air flow rate than metal.
The material from which such ventilation pipes are made is polypropylene. It is reliable and durable, stable to light, moisture, chemicals and temperature effects.
Plastic ducts are widely used in private cottages and industrial buildings. The only limitation is that such ventilation should not be used in hot shops, because it can cause serious consequences and shorten the service life.
Ducts can be flexible and rigid. The former are used in air conditioning for air purification during operations related to welding and casting, as well as for the removal of toxic substances in chemical and pharmaceutical industries. Their shape can be any.
Rigid ducts are plastic pipes, their wall thickness is 3-5 mm. Using a conventional hacksaw, they can be shortened to the desired size. Resistant to corrosion.
Ventilation pipes are coated with polyamide fabric to extend the life of the product. With plastic ventilation, which is installed with access to the street, the ducts are covered with aluminum foil.
The cost of metal ventilation is much more than plastic, so plastic is in great demand, especially in private construction.