Heating by pipes. The best pipes for heating a private house

The system, which provides for heating by pipes, can be designed by the homeowner independently. It is important to begin to figure out which heat source will be used. If it is gas, it will be necessary to buy a gas boiler with automatic control, protection system and pumping equipment. In the absence of a chimney, the boiler must have a combustion chamber and a coaxial tube that will conduct air and rid the device of the exhaust gases. Coaxial pipe can be withdrawn through the wall of the house, which will save on the construction of the chimney.

Choice of heat source

If it is assumed that the house will be heated by an electric boiler, it is best to purchase automated equipment with a pump, a safety group and an expansion tank. Such a system can be arranged independently using polypropylene pipes. If, however, a solid fuel boiler is used as a heat generator, only specialists who have the relevant experience can install it. It is possible to conduct polypropylene pipes to the boiler, but a qualified approach will be necessary in the development of the piping scheme, since the temperature of the heated coolant can reach 100 degrees at the outlet.

Schema Selection

If you decide to heat pipes, you first need to develop a scheme, it can provide for a different technology of piping to batteries. The simplest one is the one-pipe scheme, in which each next radiator from the boiler will have a lower temperature in comparison with the previous one. This approach saves material consumption, but the heat is distributed unevenly, so the one-pipe scheme can not be called effective, which is why consumers rarely give it a preference.

Heating pipes can be produced and according to the collector scheme. In this case, the material consumption will be greater, since the length of the pipe will increase, but the regulation and operation of such a heating system will be simplified, the heat will spread fairly evenly. The optimal option for a private home is a two-pipe scheme, in which the elements are laid in the floor or walls of the building along the perimeter. If the system has an expansion tank built in, the pump and safety groups are not needed.

Advice of a specialist

In such an important matter it is extremely necessary to listen carefully to the advice of specialists.

When heat pipes are arranged, a shut-off valve is not permissible between the safety group and the boiler .

Diameter selection

When connecting polypropylene pipes with metal-plastic ones, it is necessary to take into account that the diameter of polypropylene products corresponds to certain parameters of metal pipes. Thus, polypropylene Dn 25x4.2 should be supplied to metal-plastic products, the dimensions of which are 20x2. If the metal-plastic 16x20 is used, then polypropylene pipes Dn 20x3.4 should be used. For metal tube 26x3 should be used Dn32x5,4. When piping to the batteries from the main pipeline with a two-pipe system, polypropylene 20x3.4 should be used.

The use of larger diameter pipes and radiator valves, the size of which is greater than 1.2 inches, is not advisable. When heating the house with polypropylene pipes, do not follow the statement that indicates a higher temperature in the house, using a more impressive pipe diameter and a thermostatic valve.

In order to ensure efficient operation of the system, the length of the supply pipe from the boiler equipment to the last radiator should not be more than 25 meters. As for the power, its maximum limit can be 12 kilowatts.

As practice shows, efficient and correct operation of the system where it is supposed to use pipes 20x3,4 is possible if 6 batteries are used, each of which has 10 sections. If more radiators are used, the length of the connection pipe must be increased, which in turn can cause uneven heating of the batteries that are remote from the boiler.

Additional information about the choice of diameter

It is important to correctly choose the diameter of the pipes for heating. If you connect more batteries or increase the length of the pipeline, you can use polypropylene products with a large cross-section. Sometimes the conditions described are a necessity. In this case, the cross-section of pipes can be 32x5,4. To similar products it is necessary to carry out metal plastics pipes 26x3. There is an alternative solution that provides for the supply of not one but two heating circuits at once.

Which polypropylene pipes to choose

If you decide which pipe for heating a private house is most suitable, then pay attention to polypropylene products, which are the most modern among those offered on the market. For communications of the heating system, it is best to use reinforced thick-walled polypropylene products, which can be used at a temperature of 80 degrees or more. The pipes can undergo pressure of 6 atmospheres. It is important to remember that high pressure and temperature can shorten the life of products, therefore, it is recommended to use polypropylene elements in systems whose operating pressure does not exceed 7 atmospheres.

On sale it is possible to find pipes with internal and external reinforcement. The latter option is the most accessible, reinforcement in this case has almost no effect on the strength characteristics, its purpose is to compensate for the thermal linear expansion that is inherent in the material. If you use pipes with an external reinforcing layer, the installation process will be more time consuming, since the master will have to clean the pipe from the existing layer by the length of contact with the connecting fitting. If you choose pipes for heating the house, then it should be taken into account that external reinforcement can be subject to mechanical influences.

Selection of combined products and pipes with internal reinforcement

The above disadvantages are completely devoid of the product with internal aluminum reinforcement. Their expansion when heated at 100 degrees is equivalent to 5 centimeters per 10 meters of the pipe. In spite of the fact that such pipes do not require the need for stripping, the joint will be subjected to mandatory cutting when joining. These works provide for the processing of products with a special tool that makes the edge perpendicular to the outer surface.

More attractive characteristics for thermal expansion are combined polypropylene products with polyethylene filling. The core of the pipe consists of a layer of polyethylene, which has a coating in the form of a polypropylene part. If you want to choose the best heating pipes, you should pay attention to those that have the best characteristics of thermal expansion. In this case, experts recommend to prefer products with internal reinforcement of fiberglass. The advantage is the proximity of the melting points of glass fibers and polypropylene. Due to this, no additional manipulation of the connection with the fitting is required. The fiberglass fuses with the layers of polypropylene, forming all together in a monolith. But if you decide to choose such pipes, you should be ready for a fairly impressive price.

Choice of metal-plastic

Before buying pipes for heating a private house, you can consider a plastic composite, which is a universal solution. It effectively combines the characteristics of metal and plastic pipes. The products are based on an aluminum alloy covered with high density polyethylene. The outer layer is highly resistant to aggressive media. Among the positive characteristics can be allocated high throughput, attractive appearance, low cost of installation works, flexibility, non-susceptibility to corrosion.

Connect such elements together without welding, they have a long service life and excellent resistance to rupture. But there are certain disadvantages of such products, which are expressed in the destruction of the surface under the influence of ultraviolet radiation. However, this process is possible to restore: at the site of exposure, protection should be put on as a corrugated pipe. Another disadvantage of consumers is the very limited choice of diameters.

Is it worth buying copper pipes

If you still can not decide which heating pipes to choose, then you should consider as an example of copper, which have been used since the end of the 17th century and are in operation until now. Such a trend is not accidental, since this option is excellent for autonomous heating systems. For the production of pipes, high-quality copper is used, which is almost devoid of impurities. As a result, it is possible to obtain elements that are distinguished by high corrosion resistance and strength.

Conclusion

On sale you can find models, the surface of which is covered with polyvinyl chloride or polyethylene. This measure can positively influence the reduction of heat losses when water passes through the pipes. Among other things, such protection prevents the formation of condensation, improving the appearance of products. If necessary, copper pipes can be purchased in hard or soft form.