Thermal insulation of heating and DHW pipes. Protection of the heat insulating layer of external heathedral material for thermal insulation of pipes

The thermal insulation of pipelines is one of the important activities to ensure the durability of steel (VGP; ES; BSH) and polymer pipes.

Materials section

→ Rockwool cylinders	→ Shell of expanded polystyrene
→ K-Flex	→ PPU shell
→ K-Flex PE	→ Mates basalt
→ FOAMPIPE cylinders	→ PROROX PS 960
→ FOAMPIPE taps	→ Housings for pipes with insulation
→ FOAMPIPE tees	→ Aluminum ribbon.
→ FOAMPIPE Sewer sewage insulation	→ Tape clamp
→ FOAMPIPE TK thermal insulation boxes	→ Fiberglass

The heat insulation of heating pipes is no less important than the thermal insulation of the basement, walls, or the roof of the building. The main reason for this is an uninterrupted flow of water in the cold season, so it is simply necessary to warm the plumbing.

How is the correct thermal insulation of heating pipes?

Depending on the material used, thermal insulation for pipes is featured by the structure and technology of production.

The selection and installation of pipe thermal insulation is only an experienced specialist. Otherwise, over time, it will be necessary to redo the work done again.

To ensure a long period of operation of the pipeline, it is always necessary to take into account the climatic conditions in which the heating or plumbing networks will be operated, and trust the installation of the material only by professionals.

The thermal insulation of water supply pipes is the most important stage of creating water supply or sewage systems. The correct thermal insulation of pipes guarantees the normal functioning of the pipeline even during the cold season. Hurry and savings on the insulation leads to the need for regular repairs.

For thermal insulation of pipelines, only high-quality materials should be chosen. It is also necessary to take into account that it is important not only to protect the pipe from the influence of cold, but also to protect against corrosion by creating an anti-corrosion layer.

It should be remembered that the thermal insulation of pipes must be different for a long service life in order not to have a need for a frequent replacement. Depending on the passage of the pipeline (external or underground), different types of thermal insulation of pipes are used.

For the use of indoors, the optimal use of Rockwool thermal insulation cylinders. Products from a well-known manufacturer possesses high quality and unique properties. High requirements for products of technical insulation, it is allowed today to be rocular cylinders of № 1. They are produced from mineral wool on a synthetic binder 1 meter long. There may be different diameters from 19 to 273 mm. Thickness of hollow products can be 30, 40, 50, 60, 70 and 80 mm. Cylinders can be made with an additional coating of aluminum foil.

For external use, mineral wool cylinders can also be used, but followed by shelter in the form of protective shells. They protect the products from atmospheric precipitation and deterioration of thermal insulation. It is also possible to use mineral woeful mats of those mat and Vaeur Mat.

Thermal insulation for pipes can be performed with PPU shells or polystyrene foam shells. For use in Earth, this is the most common isolation option. In any case, all the necessary measures to protect pipes are recommended to produce strictly on the project in which these or other materials required for isolation are prescribed.

The heat insulation of heating pipes is a reliable protection of pipes. The effectiveness of the work of the heat-insulating material is dependent on the thermal insulation material, because without it, heat losses occur, especially in winter. All this is reflected on the wallets of our citizens.

Acceptable prices for insulation pipelines

Today it is possible to buy thermal insulation for pipes at various prices. Choosing one or another material, the buyer is often wondering what the price of insulation for the pipeline depends. The answer to the question is simple.

The cost of the material affects the following:

√ country manufacturer - Import is always more expensive, compared with the domestic product, although they are the same in quality;
√ the density of the material is the more denser, the more expensive;
√ heat insulation thickness;
√ the ratio "insulation of pipelines - the price" is completely dependent on the structural material;
√ wholesale purchase is always cheaper than retail sale.

However, buying thermal insulation for pipes, only one product should be chosen, which is optimally suitable for data, specific operating conditions. In this case, by paying once, the buyer will enjoy the smooth operation of the pipeline for a long time.

Withstand temperatures above 1000 ° C.

Rockwool isolation is highly resistant to fire. It contributes to the localization of the fire and prevents its spread. In addition, it does not secrete toxic substances and safely during the isolation of children's rooms.

Heat insulation

Save energy by maintaining the optimal temperature and indoor microclimate.

It makes working conditions and life more healthy and comfortable, improving the quality of people's lives - especially in the urban environment. Due to the stability of the temperature, you can significantly reduce the cost of heating, cooling and ventilation, as well as reduce the amount of greenhouse gas emissions.

Soundproofing

Insulation, absorption or sound correction.

The city requires a good infrastructure (roads, railway and tramways, airports), but it sometimes turns out to be too noisy. Vibration, transport noise - not to mention anthropogenic noise pollution, - lead to serious negative consequences for well-being, especially in densely populated areas.

Durability

Improved performance and increased stability at lower costs.

In cities experiencing a shortage of free land, the number of people working and living in high-rise buildings are growing. Such structures can be a brilliant solution to the task of ensuring the growing population safe and durable housing.

Aesthetics

Harmonious combination of operational and aesthetic qualities.

When people live or work in a beautiful place, it enhances the feeling of comfort and improves motivation. Wednesday in which people spend time with pleasure contribute to strengthening social relations and makes the surrounding area safer and more favorable for living.

Resistance to water

Effective treatment of the most valuable resource.

Traditional methods of food production give their positions in the context of population growth, and climate change increases the need for flood protection. Stone wool products can be constructed in such a way that they are absorbed or repelled water, depending on the need, as well as use them to recycle water in greenhouses, helping to solve a number of water management tasks.

Ecology

Eco-friendly Rockwool products reveal the strength and naturalness of natural stone.

Stone is one of the most common materials on Earth; However, we should more effectively use the resources of our planet. We have developed technologies that make it possible to use waste from other industrial sectors as an alternative raw material.

Modern people want to live with full comfort and in the city, and in rural areas. And this requires warm, cold, hot water and sewage system. In most regions of our country, such communications need mandatory insulation. Today, the building materials market offers a wide range of different insulation, among which there are special products mounted on the pipes.

Materials suitable for pipe insulation

Whether heat insulation is always required for pipes

When the heat insulation of pipes is needed

In the regions where, in winter, the soil is freezing, the insulation for pipes should be used at mandatory. Otherwise, the pipeline break is guaranteed. And to correct a similar error when the street is minus temperature - the case is not easy, and not fast. In addition, the effective thermal insulation of heating or hot water pipes reduces heat loss. Heat will not be consumed to heating the soil, and the water temperature will not decline when entering the house.

It happens that hot water systems or heating in country houses pass through unheated premises, attics, basements, if the autonomous boiler room is outside the house. In this case, the effective insulation of pipelines will reduce heat loss, do not have to include additional heaters and pay for extra kilowatts, and the heating unit will last longer, not using the maximum.

Sewer systems also require insulation, even though in such structures, as a rule, the liquid is not stirred if the correct bias is made when mounting pipes. But it happens that various sediments are accumulated inside the pipes, which can cause a blockage and then sewage drains at low temperatures can freeze, which will lead to a break of the pipe. Also, an inexperienced pumping of septicism in an autonomous sewer system may also lead to such trouble.

Insulation is carried out not only to preserve the temperature of the coolant and as protection against moving during the cold season. Sometimes it is required to protect pipes from exposure to high ambient air temperature. For example, in refrigeration devices, various industrial systems, according to which chemical fluids are pumped, gases.

What properties should be insulated material

The insulation for pipes, depending on the scope of application (underground or external communications laying), must meet the following requirements:

Low thermal conductivity, which will help preserve the temperature of the coolant in the heating and hot water pipelines, and also not to give the heat surrounding air to heat the pipeline in cooling devices and devices.
Materials used for insulation must meet sanitary standards and fire safety, have self-refining properties.
The insulation cannot be excessively hygroscopic, since the amount of air is reduced in the structure of the wet material, on the amount of thermal insulation properties.
The heat insulation should be mounted easily on pipes of any diameter and configuration, with the formation of a minimum amount of joints, which eliminates the presence of cold bridges.
The material must be durable and have maintainability, as well as the possibility of its repeated use.
Have high resistant to the effects of an aggressive environment, mechanical strength, carry sharp temperature differences.
The material available at cost.

But it is not worth gaining a cheap insulation, as this can lead to even greater costs if the pipe moves in winter.

Types of thermal insulation for pipelines

The above-mentioned requirements may have the following types of insulation:

varieties of mineral wat - glass gamble, basalt and others;
styrofoam;
polystyrene foam;
foamed polyethylene simple and with foil coating;
polyurethane foam;
ceramzit.

Mineral wool

Mineral Wool Cylinders

All varieties of insulation material based on fiberglass or natural rock rocks are distinguished by a high degree of thermal insulation and the optimal cost. True glass gamble in its properties to maintain heat is worth an order of magnitude below such material as. The advantages of this type of insulation can be attributed:

resistance to high temperatures when the material maintains up to 700 degrees;
sufficient mechanical strength when after deformation almost completely restores its form;
resistance to the effects of aggressive chemicals - alkaline, acid solutions, oils, and other;
environmental safety, as a derivative of natural feedstock.
available cost.

The disadvantages of mineral wats include their sensitivity to moisture. Therefore, the device of the waterproofing layer is additionally required. In addition, waterproofing will help not only protect the insulation from water exposure, but also will not give the smallest stones or glass fibers to clog the air of the room. Such works lead to the rise in the cost of construction and lengthen its term.

Mineral wools are produced with rolls, mats with plates and shells with a foil pasted on top. It is these products that are most convenient for the production of heat-insulating work on pipelines, with a device for the protection of wooden roof structures from ignition at the site of the passage of chimneys of furnaces and fireplaces.

Polyfoam and expanded polystyrene

Polyfoam shells for insulation pipes

This material, which contains more than half of the air, is one of the most effective thermal insulators. Not extruded foam is bad only by what has low mechanical strength. For the insulation of the pipes, the industry produces foam half-cylinders, called shells. These products have a lot of advantages:

simple and quick installation;
long-term operation;
the absence of cold bridges, since the connection of individual segments is made according to the "groove-comb" principle;
products can be operated in temperature from +80 to -110 degrees Celsius. At a higher temperature of the pipeline, an additional layer of genuine plug or basalt fiber is laid;
the ability to pave the heating cable in specially arranged grooves along the entire length of products;
fireproof, do not support open fire;
foam shells can be used repeatedly.

Shells can be covered with a foil layer, which works as a reflector of air ceilings - hot or cold.

Insulation of extruded polystyrene

Exactly the same half-cylinders are made from pressed (extruded) foam plane, which is called already. It possesses similar technical characteristics, but with the same degree of thermal conductivity with foam, it has a smaller thickness, which is convenient when insulation of pipes passing next to walls or other structures. Penoplex has a tougher structure and greater plasticity than foam plastic, so it can be bent to a certain limit.

Insulating materials from foamed polyethylene

Insulation foamed polyethylene having a protective foil coating

Compared to other types of insulation, foamed polyethylene has the best properties:

The material is more durable, withstands the load on the gap, equal to 0.3 MPa, after exposure to pressure, is somewhat deformed, but quickly takes the initial shape.
Practically does not absorb water. It can be used in a humid environment, not allowing corrosion on pipes.
Stalling tolerates the impact of materials such as cement and lime, concrete and other contacts.
Withstands the temperature difference from +90 to -60 degrees. At a higher temperature, the product loses its shape.
The material is quite refractory. The foamed polyethylene can only catch fire at open fire temperature of 300 degrees. At the same time, during combustion, the material does not distinguish with harmful toxic substances into the environment.
Comfortable in mounting, it can be thermal insulation for pipes of any configuration, a diameter of up to 150-200 mm.
Low cost compared to polystyrene foam products or polyurethane.

It is made with hollow cylinders up to two meters long with a wall thickness from 6 to 20 mm or rolls.

So mounted foamed polyethylene on pipes

The product from the foamed polyethylene is cut down in length and dresses onto the pipe, the section of the cut is fastened with a special bandage or ordinary scotch. Some stamps of the insulation of foamed polyethylene have a protective coating of an aluminum foil, which performs the function of the reflector. In the case of using a roll material, it is cut on the tapes that wind pipes. This method is better suited if the pipeline has many bends and a different diameter in some sections.

Polyurene Foolder

Polyurethane foam spraying on pipes

This material is gaining increasingly popular construction due to its high technical characteristics. It:

does not rot and do not rust;
can be mounted on pipes lying in the ground without any trays or channels;
creates an absolutely hermetic shell on insulated structures;
has low specific weight and low thermal conductivity; The service life is calculated with fifty, and more years;
resistant to the effects of weak solutions of acids and alkali;
it has excellent adhesion practically to all materials.

The thermal insulation of polyurethane foam can be applied on pipes with various methods - spraying of liquid material and rigid products like "shell". Spraying is produced using special equipment, and requires certain skills and knowledge. The shell having a type of two hollow-cylinders is mounted on the pipes simply, due to the existing connective design of the "groove comb", and those products that have a sleek end are fixed on the pipeline with special clamps, bandages, or conventional knitting wire.

Polyurethane coating applied in the factory

But besides this, ready-made pipes are widely popular today, which in the factory conditions caused thermal insulation coating of polyurethane foam and protective layer. When using similar outdoor products, the protective shell is performed from galvanized steel, when laying underground communications, the protection is made of polyethylene. The advantages of such pre-insulated pipes are available: decline in the construction of communications, since the gasket of engineering networks no longer requires insulation work, and the quality of isolation is checked by the factory OTD.

Ceramzit

Another traditional representative of heaters for pipelines is a clay gravel. It is used mainly to insulate outdoor water supply networks, sewage. Since bulk material, it takes to build trays from wooden boards or use special concrete structures.

In addition to all the above types of insulation, there has not been a new material for insulation of pipes - thermocracy, which is applied in the usual way - brush, roller or sprayer. With the minimum thickness of the insulating layer, the quality of thermal insulation is quite high. But the cost of this material is also not small.

Installation of thermal insulation

The most demanded material for insulation of pipes is products in the form of hollow cylinders. They are mounted fairly easily and do not require special knowledge or high qualifications of the working.

First of all, the condition of the pipe is checked. It should not have leaks, be peeled from rust and dirt and processed by an anti-corrosion agent.

If insulating products are not equipped with protrusions and grooves, you should fasten them with the help of bilateral tape.

Displacement of individual elements of the shell in length

In this case, the displacement of individual elements of the hollow cylinder in length is 10-20 cm, so that the connecting seams do not converge in one place. The shell of foam after its fixing on the pipeline must be protected from the effects of ultraviolet. The material for such protection can be rubberoid, pergamine, tol, pholoisol and other opaque panels. For the insulation of complex parts of the pipeline, you can use ready-made shaped products or take advantage of rolled insulating materials.

Cylinders made of foamed polyethylene and having a foil layer do not need to be protected.

The main essence of the article

With pipe insulation, any available material is used that meets the requirements for thermal insulation, regulated by the construction norms and regulations. And the correct installation of the selected insulation will extend the service life of engineering networks and will reduce, and maybe it will completely exclude, the number of repairs associated with the rupture of pipes due to negative temperatures.

The heat insulation of heating pipes performs a number of functions. It reduces heat loss along the path of the coolant advance and increases the efficiency of the heating system. Warming protects metal structures from condensate formation and slows down the corrosion process. In the case of stagnation of fluid in the pipes, it does not freeze and does not cause collector damage. What materials are used for heat shields and how they are mounted, this article will tell.

Materials for heat insulation of heating pipes

The choice of insulation is the task, when solving which the following factors are taken into account:

maximum coolant temperature;
conditions for servicing the heating system;
diameter of pipes.

Depending on the power of the pipeline, they use such types of heat insulation:

ready-made cylinders;
semi-cylinders when the cylinder is folded from two halves;
rolled materials that can be given the necessary form.

For pipelines of small diameter, rigid elements are suitable in the form of cylinders and half-cylinders. They are equipped with grooves and holes, the presence of which simplifies and speeds up the process of mounting the protective shell. Such thermal insulation for pipe heating protects collectors from mechanical damage, helps stealing high temperatures and minimally absorbs moisture.

Mineral wool

Mineral wats are not losing popularity for decades. The reason is the proven result from their use and affordable cost. Materials are used to insulate the heating systems of industrial and civil facilities. It is traditionally used where the structures are constantly being changed, for example, for the insulation of chimneys.

In construction, the insulation is valued for such properties:

resistance to acids, alkalis and solutions;
weak water absorption (depends on the material processing with special compositions);
the material perceives up to 600 ° C without losing mechanical and thermal insulation qualities;
environmental safety.

Of all mineral insulation, the following are allocated:

basalt wool (manufactured from basalt breeds);
glasswater (made from the battle of glass or fiber staples, derived quartz sand).

The thermal resistance threshold of basalt wool is higher. Therefore, its scope is wider than that of fiberglass, which is used in the construction of residential facilities. Fiberglass enters the trading network in rolls with a thickness of the web 15-20 cm. The material consists of a thickness of 3-4 μm thick. Insulation, isolate the design, the temperature of which does not exceed 1800 ° C. It is not destroyed by vibration, resistant to chemical processes and is distinguished by a long service life. Such material is protected by heating mains located on the surface of the Earth.

Note! Fiberglass is a danger to those who work with him, because the dust is annoying the mucous membrane of the eyes and the skin. Therefore, when installing such thermal insulation for pipes for heating, be sure to apply special protection tools.

Polyurene Foolder

This heat insulator exceeds insulation made from mineral wat. It is distinguished by a dense rigid form, because of which he received the name "shell". It is manufactured by the "pipe in the pipe" method, when the space located between the two cylinders is filled with a positive substance. It forms a protective "shell".

Polyurethane foam, familiar to many as a mounting foam (used to plan the gaps in the window frames), has such advantages:

does not distinguish toxic substances and does not smell;
it does not fall apart and does not rot under the influence of external factors;
does not pose a danger to human health;
not decomposed in an alkaline and acid environment;
does not respond to changes in humidity and temperature jumps;
it does not destroy under the action of sunlight, since the material during the installation process is covered with protective paint.

The only lack of polymer remains the cost.

Polyethylene foamed

Another synthetic material - foamed polyethylene. It also does not pose a danger to the human body and the surrounding nature, without loss to transfers sharp fluctuations in the external temperature and humidity.

For ease of installation, the insulation is made in the form of tubes with a cut. Cold and hot pipelines are insulated with polyethylene. Since such heat protection does not tolerate high temperatures, it cannot be thermally insulated with heating pipes on the street. The use of such insulating material is limited only by residential objects.

This material does not need a submission. It has long been applied in different purposes and is characterized by low thermal conductivity and water-repellent properties. The acceptable price of the insulation explains its popularity. They insulate metal and plastic structures and are used as sound insulation.

The liquid type of foam "foamizole" is used for heat insulation of the heating industry. When applying material on pipes, emptiness and spaces do not appear, and after drying it is formed a solid crust.

Foamglo

The insulation refers to the latest innovations of building materials. Glass with a cellular structure reliably protects pipes and other structures. The material is characterized by the following advantages:

environmentally friendly;
resistant to acids and alkalis;
not combustible;
does not give a shrinkage;
does not represent interest for rodents;
not difficult in montage;
differs long service life.

Such characteristics have not been ignored from experienced builders and beginners. Therefore, they turn to it more and more.

Heat insulation of pipes with their own hands

The heat insulation for open-air heating pipes is carried out along the entire length of the heating industry. This uses ready-made protective elements with waterproofing and insulation layers. Their considerable cost pays off considerable time savings during the installation of the insulation. This is especially noticeable when work is carried out on extended highways. In this case, it is enough just to make reliable insulation of the joints.

If you are using other materials and make work yourself, you will need:

foil Scotch;
selected insulation;
scotch for isolation places connecting elements.

Prepare everything you need, proceed to work.

Cut the foil tape on the pipes, moving forward on the spiral.
Secure or mounted an insulating material. Make sure the connecting seams are tightly adjacent to each other.
So that the seams do not penetrate the groundwater, secure the joints using a special plumbing tape.

Note! Where seasonal temperatures are very low, it is desirable to use the method of insulation using a special cable to warm the pipes.

What materials are the heat insulation of heating pipes, the portal about the pipes

The heat insulation of heating pipes performs a number of functions. It reduces heat loss along the path of the coolant advance and increases the efficiency of the heating system. Insulation

What thermal insulation for heating pipes is most effective

The basis of all the heating system is heating pipes. In order for the autumn-spring period of the pipe, the pipes did not freeze, they did not appear condensate or corrosion, and with a simple system, the tolerated water did not turn into ice, thermal insulation for heating pipes is used. This article will be told about the varieties of insulating materials and how to use them.

Selection of material

In localities with a predominantly cold climate, thermal insulation for pipes is a necessary condition for the operation of the heating systems of any type - central or home.

When choosing a material for insulation of heating pipes, such initial data should be taken into account:

pipe cross section;
conditions in which the heating system works;
the temperature of the moved coolant.

From the section of the pipe depends on what form the heat-insulating material should be purchased - in a roll or in the form of semi-cylinders, cylinders of the existing dimensions.

For example, if it is necessary to insulate a small diameter pipe, it is better to use heat-insulating materials for cylindrical or semi-cylindrical heating pipelines. Such products, in addition, due to rigidity and elasticity, serve as a protection of the system from mechanical damage, and also possess water-repellent properties. In the case of large diameters, a rolled insulation will have to use.

For the right selection of thermal insulation, it is necessary to consider the main types of products used.

Types of thermal insulation for pipes

Mineral wool

Mineral wool for pipelines is one of the most popular insulating materials. This insulation is recommended to be used to insulate central heating systems and supplying hot water, laid in residential buildings or buildings of industrial enterprises. Another way to apply the material is to protect pipes with constant warming, for example, furnace chimneys.

Mix two types of mineral wool:

Stone wool - manufactured from basalt rocks.
Glasswater (fiberglass) - produced from broken glass or staple fiber, the basis of which serves quartz sand.

The main advantages of stone wool:

heat resistance (up to 650 ° C) while maintaining mechanical properties;
resistance to solvents (lumps, acids, oil solutions, etc.);
with a special impregnation, you can give the waters resistance;
environmentally friendly, non-toxic material.

Glasswater less thermal resistant, respectively, the scope of its application is already. It produces rolls with a length of 1.55-2 m.

operating temperature of protected pipes - up to 180 ° C;
vibration resistance;
chemically neutral, does not interact with chemical and biological substances;
with the correct installation and observance of the operating conditions, the properties retains a long time.

Polyurene Foolder

This thermal insulator has a rigid form, providing for the face and walls. Finished products are obtained by casting a pipe in a pipe. Thanks to the above properties, the material is often called the shell.

Polyurethane foam has maximum strength and effectively reduces heat transfer.

Technological characteristics of polyurethane foam:

non-toxicity, lack of smell;
resistance to oxidation (not rot);
unsurpassed strength - serves not only by a thermal insulating element, but also mechanical protection of pipes;
does not conduct electrical current;
chemically racks - does not interact with acids, alkalis, etc.;
suitable for any climate and all weather conditions.

The main disadvantage of products is a high price: polyurethane foam insulation are more expensive than others.

Polyethylene foamed

This type of thermal insulation is produced in the form of hollow cylinders for different outer diameters of pipes. The usual cylinder length is 2 m, variations are possible.

Foamed polyethylene can be used to insulate the heating pipes, hot and cold water pipes.

Advantages of foamed polyethylene:

environmentally friendly material, safe for man;
moisture resistance;
good thermal insulation, resistance to temperature change;
elasticity in combination with flexibility allows the use of material and as isolation, and as a mechanical protection of the pipeline;
easy application - can be mounted on the pipe entirely or by cutting the cylinder;
saves properties with a neighborhood with lime, concrete and other materials.

Other foamed insulation

In addition to foamed polyethylene, in order to heat insulation:

polystyrene foam - supplied in the form of a binding protrusion in the groove of halves;
polyfoam - has good hydro, thermo- and sound insulation, racks to ignition, with proper operation, the service life exceeds 50 years; In addition, Döshev;
foamizol - sold in the form of a liquid, when applied to the surface foams, not leaving gaps;
the foam glass is a glass of a cellular structure, safely, does not shrink, neglect, durable, chemically neutral, resistant to the effects of rodents.

Heat insulating paint

The heat-insulating paint for heating pipes is a new material developed in Russia.

The paint includes:

foam glass;
ceramic microspheres;
perlite;
other heat insulating substances.

Application of a layer of paint with a thickness of 2 mm is equally wrapping the pipe with several layers of mineral wool or polystyrene foam.

non-toxic, safe for health;
does not smell;
protects pipes from corrosion;
withstands heating to high temperatures;
it can be used in systems both home and industrial heating.

Such paint is produced in the form of an aerosol, which allows you to apply material to hard-to-reach portions of the pipeline.

Installing thermal insulation on pipeline

Before starting directly work on the installation of the insulation, you need to go through several preparatory stages.

First, you should choose the insulation material. It is possible to be guided in this paragraph and the estimated conditions of operation (working temperature, the possibility of mechanical deformation, the presence of rodents), and the diameter of the pipes (it is obvious that the hollow cylinders are perfect for a small diameter, for example, from foamed polyethylene, and the pipes of large diameter are easier to wind up glass ).

Another important factor is the price of the product. Of course, if the cost of carrying out work is not limited, you can choose modern material with higher characteristics; However, traditional types of thermal insulation did not lose relevance.

In addition, if the work will be carried out in hard-to-reach places, it is more logical to use easily applied materials - thermal insulating paint or foamizole.

Secondly, you need to make access to insulating pipes in advance, having taken away all obstacles. As a result, this will significantly speed up the work and will prevent possible injuries or damage of consumables, and therefore extra spending.

After preparatory actions, the material fixation is performed on the pipe.

The order of work is as follows:

Before applying the insulation, the pipes are covered along the spiral of the scotch-foil.
The insulation is wrapped around the pipe or otherwise they are applied or fixed on the surface. Regardless of the method of applying, it is necessary to be in good faith, avoiding leave open areas, which will subsequently become "cold bridges".
After fixing the insulating material on the surface of the pipe, it is additionally fixed by scotch (for example, plumbing), winding into several layers. The winding should also be made as carefully and with a certain effort.

If the work is made carefully and has not been made of gross errors, thermal insulation, regardless of the material selected, will serve for a long time and properly.

Heating pipe insulation: insulation and thermal insulation, thermal insulation materials for pipelines, paint, mineral wool

How to insulate the heating pipes with their own hands - the choice and installation of pipe heat insulation

Heat loss in the pipeline is the main problem of both autonomous and central highways of the heating system. And if the cutting of heat loss within the region is entrusted to utilities, then the owner of the private house needs to take care of the insulation of heating pipes on their own, and due to a minor work, perform it with their own hands.

Do I need to warm the heating pipes and what does it give?

Thermal insulation for heating pipes allows:

reduce heat loss in places where pipes pass on the ground are mounted by air (ground) method or are located in an unheated room;

prevent freezing fluid, which is a coolant (the size is fraught with a breakthrough of the pipe);

reducing the probability of corrosion appearance on the surface of the pipe (for metal pipelines);

saving funds for heating at home.

Thus, the safer, the heating system will be insulated, the more heat will go to the user (above the efficiency), and the less will have to pay for gas for heating (or for electricity, if the electric boiler).

Due to the fact that the heat carrier is moving according to the heating system, the task of pipe insulation is reduced to minimizing heat loss and preventing the system break due to its movement.

The popular solution in this case is the use of thermal insulation materials. This is the most budget and simple in terms of independent implementation method of insulation.

Thermal insulation for outdoor heating pipes

A variety of insulation provides the ability to choose exactly the one that will fit well for a particular application site (on the street, in the ground, in the basement, in the attic) and the budget.

Selection of thermal insulator is carried out taking into account factors:

diameter of the pipe heating system;

operating conditions (location of the heating system);

the average heat of heat carrier;

the thermal conductivity indicator of the insulation (the lower, the better);

water absorption indicator. Shows the ability of the insulating material to perform their functions in a humid environment;

resistance to burning, biological and chemical activity, effects of ultraviolet and other external environment factors;

life time;

simplicity of installation (with the condition for ensuring sufficient tightness);

cost.

What to insulate the heating pipes on the street do it yourself

To properly choose a pipe insulation, you need to know which types of thermal insulation for heating pipes exist, and what are the features of each of them.

Classification of heat-insulating materials for heating pipes

1. By way of installation:

hard leafy insulation. These include: foam and expanded polystyrene. Despite the high thermal insulation properties, the installation of such insulation is quite complicated in terms of ensuring insulation tightness;

rolled insulation. Among them: polyethylene (used as an additional insulation component), foil foam, cotton wool (mineral and glass). The use of rolled materials requires the arrangement of their reliable attachment to the pipe;

segment (casing) insulation. There are two types of such insulation: hard - shells made of polystyrene foam, polyurethane foam (PPU) or foam, and soft - polymer pipes. The advantage of segment materials is that they are perfectly holding the form, are easy to install and provide the desired level of tightness of the adjustment of the heat-insulating material to the heating pipe;

spray insulation incl. Termocracy. Penosol has proven itself as a spray, since it allows you to isolate even small gaps. Thermocracy has the same property. The only minus of these materials they are quite expensive and their independent application is problematic.

Thermal insulation of heating pipes with rigid, soft and sprayed insulation

2. By type of insulation:

polyfoam and expanded polystyrene. Have the best characteristics from the point of view of maintaining the original coolant temperature. Their use in the form of a shell simplifies installation and ensures reliable protection of the system;

Heating pipe heat insulation - foam shell Thermal insulation material for heating pipes - foam and expanded polystyrene

cotton (mineral, glass wool). It can be used as a roller and as a sectional material. Regardless of the type and configuration, cotton insulation for heating pipes has a significant drawback, which lies in the fact that the car is hygroscopic. Those. It needs additional protection against moisture. When wetping, cotton loses its properties. Therefore, often the sections have additional protection in the form of a foil layer. But the wool is perfect for thermal insulation of pipes in the basement or in the attic.

Heating pipe insulation - Mineral wool casing Heating pipe insulation - Shell of foil basalt wool

foofol foam. Due to the low thickness, it is used mainly for insulation of pipes inside the room.

Heating pipe insulation - foofed foam Warming of heating pipes by foam

polyethylene foamed - (EPE, PPE) Polyeneetylene for pipes.

Heating pipe heat insulation - Polyethylene foamed (PPE) Heating heating insulation - Polyeneetylene Pipe

Heating Heating Technology

The selection of pipe heat insulation and the method of its installation influences the place of the gasket of the pipeline.

Heating heating pipes on the street

The outer thermal insulation of the pipes is the most difficult way of insulation, because in the open air in defense need not only pipes, but also the insulation itself. For installation on the street, nonhygroscopic materials are used, or others, but reliably protected from moisture films with a film, a casing.

In addition, it is advisable to apply the most dense and thick insulation on the street. Another requirement is the use of a material resistant to ultraviolet, bad weather and mechanical damage.

Insulation of heating pipes in an unheated room

Basement, a cold attic, a boiler room - a feature of such a room is the absence of heating radiators. But since the pipes are filled with the coolant and are located in a medium with minimal humidity, there are no special requirements for the heat insulating material or its thickness.

Thermal insulation of heating pipes in unheated (cold) indoor

Warming of heating pipes underground

The specificity of the installation of heating pipes underground is that they must necessarily be labeled below the level of primer of the soil, and this is the depth of one and a half or two meters. If not to adhere to this requirement, the coolant will be very cooling while it will take place through the heating panel located in the ground. In order to reduce the loss of heat, you need to take care of the high-quality insulation of the underground pipeline.

The masters argue that the optimal solution in this case will be the use of a cable heating system of pipes. But due to the high cost, users prefer enhanced thermal insulation of heating pipes.

Good insulation of heating pipes underground implies requirements:

insulation insulation from moisture, which is in the soil;

elimination of the possibility of deformation of the insulation, because In this case, its properties are reduced. Especially relevant for soft thermal insulation materials;

According to the reviews, the optimal solution is the heat insulation of the heating pipes using the PPU shell.

Note. Users are recommended for pipes that are laid above the level of soil freezing, use a combined warming system, namely: the combination of cotton wool and a rigid fiber-protective shell. Ideally, at the stage of laying, apply factory multi-layer pipes in PPU insulation.

How to insulate the heating pipes do it yourself

Sequence of actions in the form of a step-by-step instruction:

calculation and purchase of heat-insulating material;

winding pipe with foil scotch or foil. Foil performs the function of heat reflector;

installing the insulation around the pipe. Sectional hard (casing) or soft insulation just "dresses" to the pipe. As for soft materials, they need to cut into blanks, in width equal to the diameter of the pipe. Next, wrap around the pipe and fix the scotch, wire or plastic homutics. With a hard insulation harder. It is necessary to create a box around the pipe (or use pipe shells of the corresponding diameter);

inspect the insulated tube for the presence of "cold bridges" and eliminate them;

fasten the heat-insulating material on the pipe with the help of sanitary or metallized tape;

if it is necessary to cover the heat-insulating material with protective material (film) and seal the joints with scotch.

The costs of insulation of heating pipes, despite their initial magnitude, quite quickly pay off by saving to pay for heating accounts at home.

Warming of heating pipes - heat insulation for heating pipes

The insulation for the heating pipes in the open air - the insulation of the pipeline of the home heating system on the street, in the ground, in the basement, in the attic. Types of thermal insulation material, Mounting methods

Heat insulation for water supply and heating pipes

Thermal insulation for pipes is used mainly to reduce heat loss in heating systems that are inevitable after the occurrence of cold weather. Which is characteristic, such thermal insulation is necessary not only in order to maintain the required temperature indicator in the heating line, but in order to prevent the condensate accumulation on the walls of the pipes and the warming material, the implantation of the working fluid with a stitch, and even to slow down the rusting process of iron elements. Thanks to all this, the operational period of the system itself increases.

How to choose insulated pipe material

Due to the peculiarities of the domestic climate, high-quality thermal insulation is necessary not only for centralized heating highways, but also for individual networks. There are a number of factors on which the choice of one or another warming material is dependent, here they are:

operational conditions of the system;
diameter of the pipeline itself;
heating temperature of the working fluid.

The key factor in this case can be the diameter, since it largely depends on the type of insulation used. So, modern manufacturers offer semi-cylindrical, cylindrical and rolled insulators.

Heat insulation for pipes

Note! As for rigid cylinders and half-cylinders, they are used in a slight diameter highways. This kind of material is equipped with grooves that simplify the installation procedure.

In addition, the segments made of plastic or mineral wool are used for isolation. In general, the rigid insulation is good because not only resistant to elevated temperature or low moisture absorption indicator, but also in that it has a permanent clear geometric shape, thereby ensuring high-quality protection against mechanical damage.

In order to find out which of the insulation to acquire, you should familiarize yourself with the key materials and areas of their use.

Prices for heat insulation for heating pipes

Mineral wool

Materials made from Minvati are very popular due to their effectiveness. As for the advantages of the insulation, then they are as follows:

non-toxicity (this is one of the safest building materials);
a fairly high heat resistance (the material can withstand up to 650 degrees); which is characteristic, when heated, it retains its initial thermal insulation and mechanical parameters;
the low degree of absorption of moisture (in the process of manufacturing Minvat is processed by special impregnations);
chemical resistance to acid dissolving liquids, oil and alkalis solutions.

This material is the perfect option for insulation of hot water and heating lifting highways (not only in residential, but also in industrial facilities). Often the Minvat is used with thermal insulation of pipes that are subject to regular heating (it may be, for example, a furnace chimney).

Also note that mineral wool is made immediately in several varieties, read them.

Stone wool - it is made from rocks, which is also called basalt.
Glasswater is made from glass combat or staple fiber made from quartz sand. Such a heater differs from described by the fact that it is not so heat-resistant, in connection with which its scope is not so wide.

Approximate cost (with dimensions of 30-18 mm) is about 46 rubles for the temporon meter.

Glasswater

The heat insulator of fiberglass is made by rolls with a length of 155-200 centimeters (the thickness can vary from 3 to 4 μm). It is characteristic that the material has a low density, and therefore it cannot be used for highways heated over 180 degrees.

This pipe thermal insulation is suitable for ground-type communications. Among its advantages should be allocated:

long operational period;
resistance to vibrations;
immunity to chem. and biol. Substances.

The average market value is about 700-800 rubles for packaging (500x122x10).

Polyurethenietian thermal insulation

The insulation of polyurethane foam is a design with a fairly rigid form; In fact, it consists of walls and ribs. We will pay a few words by the production of this material: in the manufacture of it (if it comes to industrial scales) uses the so-called pipe "pipe in the pipe". Another insulation is called a thermal insulating shell. It is not only durable, but also reliably keeps thermal energy inside the highway.

In addition, polyurethane foam has the following advantages:

non-toxicity;
the ability to withstand various weather conditions (therefore material is suitable for outdoor use);
lack of smell;
resistance to different types of chemicals;
absolute health safety;
excellent dielectric properties;
high strength (pipeline will be protected from breakdowns caused by outer mechanical loads).

As for the shortcomings, it has only one polyurethane foam insulator - this is a high price ( approximately 345 rubles per meter).

Polyethylene foamed

We will immediately agree that it is this thermal insulator that has in recent years leading the leading positions in the market in recent years, today it is used almost everywhere, not only in heating systems. In fact, this is a ready-made shell made in the form of a pipe, the maximum "enveloping" highway and protects it from various kinds of external influences. With the installation of foamed polyethylene, anyone will be able to cope - for this you do not need any specific skills and knowledge. Initially, the polyethylene shell is cut according to the already occasional seam (at the end of the installation, this seam should be stuck back).

Excellent thermal insulation characteristics are provided by the foamed structure of the material. This polyethylene is, in fact, the thermos, because its (material) can be used in freezing equipment.

The average value - from 105 rubles for the temporon meter.

Other insulation materials

In addition to the insulation described above, another thermal insulation for pipes is sold on the market. We will get acquainted with the main varieties.

Shell PPU for pipes

Earlier, we talked about the technical specifications and features of the PPU shells for pipes, in addition to this article we advise you to read this information here.

Option first. Polystyrene foam

This heat insulator is made in the form of two halves, which in the installation process are connected to each other. To do this, use the "Schip-groove" technology, which eliminates the possibility of the appearance of cold bridges in the material.

Option second. Foamglo

Fully safe material that consists of glass having a cellular structure. This is a non-shrinkable version of the insulation, characterized by durability and durability. It does not burn, easily withstands various chemical impacts, resistant to the invasion of rodents.

Note! Even newcomer can cope with the insulation of the pipeline pipeline, and the long-term operational period remains a guarantee.

Option third. Penosop

According to its technical characteristics, the foam reminds remotely, that's just sold in liquid form. During the processing of highways there are no "gaps", and the entire system after drying will be quite sealed.

Option fourth. Styrofoam

Among distinctive features of this material, low thermal conductivity, resistance to ignition, minor moisture absorption, heat resistance, long service life (about fifty years) and excellent noise insulation qualities are isolated. In view of all this, the foam is an indispensable heat insulator, which can be used on an industrial scale.

Thermal insulation paint

By the way, this is a new innovative development that Russian scientists have created to universal pride. The composition of such paint includes:

foam glass;
perlite;
ceramic microspheres;
a number of other thermal insulation components.

If you cover the pipeline with such a paint layer at least 2 millimeters, then the results will be such as when insulating several layers of foam or minvati. This paint is harmless to the body and nature as a whole, it has almost no smell, therefore, there is no need for ventilating. With the help of the insulation, a reliable protection of rusting pipes is created, the material itself does not heat up under the action of high temperatures. In addition to domestic purposes, paint can also be applied in industrial and production conditions.

Note! The heat insulator is made in the form of an aerosol, thanks to which the installation procedure is simplified noticeably. At the same time, painting is subject to the most difficult to reach from the places.

In all the insulation listed above, different structures and different parameters, but the function is one - the protection of household and industrial pipelines. After installing the thermal insulator, heat loss during circulation of the working fluid is significantly reduced. All this reduces heating costs, which means there is also an economic component.

How is the installation of thermal insulator on pipes

The specific procedure of insulation depends on which of the materials was selected. Although in general terms the algorithm of action is the same and consists of three main stages.

The first stage. So, thermal insulation for pipes purchased, you can start work. At first, before the installation starts, the pipes are fluthed with foil tape, and it is extremely important that it was made on the helix.

Stage second. Insulated material is installed on the pipes. After that, with the help of a special tape (although in this case it is quite possible to use and sanitary) the material is attached on the pipeline and wakes up as close as possible.

Note! The winding of the insulation tape is obligatory, since otherwise underground water will penetrate into the formed slots, which will negatively affect the functionality of the entire highway.

Stage Third. At the end of the installation work, it is mandatory to check. Everything remains only to check the quality of the insulating layer in action!

Pipeline frozen - how to warm up?

As we have already noted above, the modern range of insulation materials is huge, so it is necessary to try to the maximum so that in the future do not face the problem of the freezing of the pipeline.

Note! Thanks to the competently equipped thermal insulation layer, frost will never be able to get to the working fluid moving through the pipeline.

But it happens that you didn't take care of good insulation for some reason. What to do in this case? In any technical reference book you can find information that pipelines must be laid - be sure! - Taking into account the level of soil freezing. This means that if you did not have the opportunity to pave the highway below this "Waterlinia", then it (highway) had to be insulated.

And if all these requirements are not fulfilled, then there may be a situation when, due to suddenly bursting frost, water in the pipeline completely freezes. If we speak specifically about metal pipes, they often burst in such cases; The plastic products cope better, but the working fluid does not even take place on them.

Now we will consider what measures should be taken in order to get rid of ice from ice. If metal-plastic heating pipes have frozen, then there is one effective solution to the problem: in the frozen pipe it is necessary to insert a smaller pipe (although the hard hose can be approached) and it can be supplied to hot water until the ice is completely molded. But all this will refer to the search for a frozen section of the highway. This can be done as follows: gradually bending the plastic tube until the characteristic "ice" crackling will sound. It is in that plot of the network where you heard crackling and need to produce heating.

There is an alternative solution to the problem - with the help of an ordinary household hair dryer (if it is not possible to use construction).

If the highway froze for a big length and there is no possibility to warm it up, you can stretch new heating pipes that are warmed with foamed polyethylene, and use them until the ice melts in itself.

Heating or water supply insulation - overview of the best materials with characteristics and cost

Pipes located in unheated premises need to be protected from freezing. From what material they would be made, their thermal conductivity is high, so the freezing occurs quickly. To avoid unnecessary problems, use a pipe insulation, which will create reliable insulation for pipelines from frosts and even insulation from noise due to its noise absorbing qualities.

Heat insulation for pipes

In the Russian market there are many companies producing structural elements to reduce heat transfer. You can choose products made from different materials, select the desired size and suitable characteristics suitable for your communications. Thermal insulation of pipes can be carried out of several types of protection, such as polyethylene or foam.

Heater for Polyethylene Pipes

One of the best ratios of the price and quality is characterized by the insulation for polyethylene pipes. It is a material consisting of the smallest cells that use well the system well. It protects against metal corrosion. The material itself practically does not absorb water and withstands the temperature from -60 to +90 degrees. The coating is easy to install.

In systems for heating, the following material reduces heat loss to 80%. It is produced by sleeves 2 meters of different thickness:

model Name: Parleks NPE T 60x9x1000 mm;
price: 45 P;
characteristics: Color Gray, Gross weight 0.06 kg;
pros: flexible material, moisture resistant, has a low thermal conductivity;
cons: not detected.

Well copes with the insulation of cold and hot communications the following product. Due to the color separation, it allows you to distinguish pipes with hot and cold water:

model Name: Thermal insulation Super Protect 28;
price: 21 ruble;
features: Comes in bays, red color, 10 meters long;
pros: outside covered with a polymer film that increases the strength of the communications and the service life of 50%;
cons: not detected.

Another universal material with which you can work to protect heating, sewage systems, etc. It is racks to the effects of materials such as concrete, plaster, lime:

model Name: EnergyFack Super 2 m;
price: 69 r. / Bim.m;
characteristics: Hollow, Low thermal conductivity, Gray color;
pluses: Low Morning;
cons: High cost.

Folgized pipe insulation

Foil - heat insulator, which is often used in construction. Its functions are largely superior to other types of materials such as foam or mineral wool. When the need for a material capable of reflecting heat waves is used, a foil insulation for pipes is used. It is a basic thermal insulation material covered with foil.

Thermal insulation for pipes of this type is used in different branches of construction. It is suitable for pipes of any size due to the fact that you yourself cut the necessary pieces of material:

model name: Penofol - 2000 A;
price: 65.00 r. / m2;
characteristics: Polyethylene foamed, on one side Aluminum foil;
pros: universal material;

If you need an excellent insulator, which will provide a double heat shielding effect, select the following item. Heatlopotieri with him will be minimized:

model Name: Mosfol;
price: 900 r. / Roll;
characteristics: base - foamed polyethylene, foil is located on both sides;
pros: high reflective effect - 97%;
cons: Release only in rolls.

As protection against steam, the outlet of heat, the reduction of noise is suitable for this isolator. It reflects about 55% of energy and perfectly transfers the wet environment:

model Name: Penoflex L (LoveVan)
price: 799 p. / Roll;
characteristics: Polyethylene with single-sided lamination, elastic, flexible;
pros: speed mounting anywhere;
cons: Release only in rolls.

Insulation for pipes made of polystyrene

Polyfoam is one of the most common materials. The second name is polystyrene foam. It combines favorable characteristics: cheap and easy to use. Pipe polystyrene foam received a second name - "shell for pipes" due to the corresponding appearance. It can have 1 or two cuts with grooves at the junctions that fasten the edges securely.

Polymerisolation Company produces products such as foam heat insulation for heating pipes. They are durable, lungs and safe:

model name: Shell PPU 720/50;
price: 1 750 rub. / Bill;
characteristics: Polyurethane material material (type of foam) consists of 2 cylinders;
pros: High Heat Saving;
cons: fragility, flammable.

Another type of foam products for fast and light mounting, which will effectively protect any external thermal pipeline:

model Name: Shell for isolation 325/50;
price: 916 руб. / BY;
characteristics: Hollow pipe made of polyurethane foam;
pros: ease of installation;
cons: fragility, flammable.

In the case when plastic communications in sewage or pipeline is required, you can use this product. It is suitable for reusable and will provide you with quick access to problem places if necessary:

model name: PPU shell isolation 89/40;
price: 306 rub. / Bill;
characteristics: Length 1 m, the parameters of the coolant to + 150 ° C;
pros: ease of installation;
cons: fragility, flammable.

Basalt insulation for pipes

Cylinders made from basalt fiber are manufactured in any diameter and size. They have the highest temperature resistance (from -200 to + 300 ° C), withstand temperatures above 1000 degrees, without melting, are perfectly suitable for reduced heating costs. The heat loss level, where the basalt insulation is used is 8%, which leads to savings up to 20% of the funds.

Excellent thermal and sound isolation can be achieved using this product. Manufacturers produce it to order on customer customer requirements:

model Name: Isolastic RW;
price: from 75 r. / Bill;
characteristics: Mineral Cylinder;
pros: a special lock, cutting heat loss;
cons: not detected.

There is another species of the same material that has increased thermal insulation properties. This product is produced with different coatings:

model name: Isolastic RW ALU;
price: from 95 r. / Bim.m;
characteristics: Aluminum foil coating;
pros: longitudinal strip with self-adhesive layer;
cons: not detected.

The following means of protection is produced with different coatings. It performs not only a protective, but also a decorative function in those places where the pipes are located:

model name: xotpipe;
price: 277 r. / P.m;
characteristics: Mineral wool based on basalt breed, length 1 m;
pros: The highest temperature of the application;
cons: High cost.

Liquid heater for pipes

The thermal insulation of pipelines can be carried out using special paint, which creates an energy-saving barrier with a thickness of 1 mm. Method of applying: with a tassel, roller or with a sprayer. After drying, the liquid insulation for pipes forms a matte surface, which serves as a thermal mirror, not inlet cold and non-burning heat.

The thermal insulation for the water supply pipes of the company Corundum deserves attention. It protects well from freezing and prevents the formation of moisture on the surface:

model Name: Corundum Classic;
price: 330 p. / l.;
characteristics: 1 mm material \u003d 5-7 wool layers;
pros: ultrathin;
cons: High cost.

Another type of liquid isolation that can withstand temperatures from -60 to +600 degrees, this production heat maker. The paint will serve you about 30 years and will help to significantly save on heating:

model Name: Heattell Standard;
price: 310 r. / l;
characteristics: consists of vacuum microspheres, 1mm layer replaces 50 mM mineral wool;
pros: applied to the surface of any form;
cons: High cost.

Basic composition, which is suitable for various applications. After applying, it is tight and reliably envelops the surface:

model name: Astrathek;
price: 410 r. / l;
characteristics: Resistance to high temperatures;
pros: seamless surface that saves heat;
cons: High cost.

How to choose a heater for pipes

To properly choose the insulation for water supply pipes and protect yourself from problems, you need to pay attention to the three main factors: place (apartment, attic, in the ground, in sewage, outdoors), convenience of installation, price. All types of products are easily installed independently, but universal in all characteristics - polyethylene.

When it is important to reduce heat absorption, choose a foil insulation on the pipes. Polystyrene foam fragile, but suitable for work anywhere. Basalt material is easily mounted, possesses good characteristics, but it costs expensive. If there is a task to quickly heat the system, but other ways are not suitable, choose a heatcharacy that is easily applied, it looks beautiful and protects well.

Heater for pipes - Description of heat-insulating materials for heating, water supply and sewage

Reliable insulation for pipes - the best protection against temperature drops for water supply and sewage communications. Having installed it today, you protect yourself from problems in the future.

In the practice of private construction, it is not so often that there are situations when the heating communications are required not only to dilute on the premises of the main house, but also to reach them to others, near the buildings. It may be residential flaghelves, extensions, summer kitchens, household or agricultural buildings, for example, which are used for pets or poultry. The option is not excluded when, on the contrary, the autonomous boiler room itself is located in a separate building, at some distance from the main residential building. It happens that the house connects to the central heating industry, from which pipes stretch to it.

The gasket of heating pipes between buildings is possible in two options - underground (channel or infantal) and open. A less time-consuming is seen the process of installing local heating mains over the ground, and to this variant in the conditions of independent construction are resorted more often. One of the main conditions for the efficiency of the system is properly planned and high-quality thermal insulation for open-air heating pipes. It is this question that will be considered in this publication.

What is thermal insulation of pipes and basic requirements for it

It would seem, nonsense - why insulate the already almost always hot pipes of the heating system? Perhaps someone can mislead a peculiar "game of words". In the case under consideration, of course, the conversation will be correct, operating the concept of "thermal insulation."

Thermal insulation works on any pipelines pursue two main objectives:

If the pipes are used in heating systems or hot water, then heat losses are reduced to the fore, maintaining the required temperature of the pumped liquid. The same principle is also fair for production or laboratory installations, where technology requires maintenance of a certain temperature of the substances transmitted through pipes.
For pipelines of cold water supply or sewer communications, the main factor becomes insulation, it is eating a drop in temperature in the temperature pipes below the critical mark, preventing the freezing leading to the system failure and strain pipes.

By the way, such a precautionary measure is required for the heating mains, and for DHW pipes - no one is completely insured against emergency situations on boiler equipment.

The cylindrical shape of the pipes predetermines a very significant area of \u200b\u200bpermanent heat exchange with the environment, and therefore significant heat loss. And they naturally grow as the diameter of the pipeline increases. The table below shows how the heat lifting varies depending on the temperature difference inside and outside the pipe (Δt ° column), from the pipe diameter and on the thickness of the thermal insulating layer (data is given, taking into account the use of insulating material with an average thermal conductivity coefficient λ \u003d 0.04 W / m × ° C).

The thickness of the layer of thermal insulation. MM.	ΔT. ° С	External pipeline diameter (mm)
		15	20	25	32	40	50	65	80	100	150
		The magnitude of heat losses (per 1 lineage meter of the pipeline. W).
10	20	7.2	8.4	10	12	13.4	16.2	19	23	29	41
	30	10.7	12.6	15	18	20.2	24.4	29	34	43	61
	40	14.3	16.8	20	24	26.8	32.5	38	45	57	81
	60	21.5	25.2	30	36	40.2	48.7	58	68	86	122
20	20	4.6	5.3	6.1	7.2	7.9	9.4	11	13	16	22
	30	6.8	7.9	9.1	10.8	11.9	14.2	16	19	24	33
	40	9.1	10.6	12.2	14.4	15.8	18.8	22	25	32	44
	60	13.6	15.7	18.2	21.6	23.9	28.2	33	38	48	67
30	20	3.6	4.1	4.7	5.5	6	7	8	9	11	16
	30	5.4	6.1	7.1	8.2	9	10.6	12	14	17	24
	40	7.3	8.31	9.5	10.9	12	14	16	19	23	31
	60	10.9	12.4	14.2	16.4	18	21	24	28	34	47
40	20	3.1	3.5	4	4.6	4.9	5.8	7	8	9	12
	30	4.7	5.3	6	6.8	7.4	8.6	10	11	14	19
	40	6.2	7.1	7.9	9.1	10	11.5	13	15	18	25
	60	9.4	10.6	12	13.7	14.9	17.3	20	22	27	37

As the thickness of the insulation layer increases, the overall heat loss decreases. However, note that even a rather thick layer of 40 mm does not exclude the heat loss completely. The conclusion is one - it is necessary to strive to use insulating materials with the minimum possible coefficient of thermal conductivity - this is one of the main requirements for thermal insulation of pipelines.

Sometimes the heating system of pipelines is required!

When laying water and sewer communications, it happens that, due to the peculiarities of the local climate or the specific conditions for the installation of one thermal insulation, it is clearly not enough. You have to resort to the forced, to the installation of heating cables - more details, this topic is considered in a special publication of our portal.

The material that is used for thermal insulation of pipes, if possible, must have hydrophobic qualities. Little current will be from the insulation that has soaked water - he and the heat loss will not be prevented, and will soon collapse under the action of negative temperatures.
Thermal insulation design should have reliable external protection. First, it needs to protect against atmospheric moisture, especially if the insulation is applied, capable of actively absorbed water. Secondly, the materials should be closed from the effects of the ultraviolet spectrum of sunlight acting on them destructive. Thirdly, we should not forget about the wind load capable of disrupting the integrity of thermal insulation. And, fourth, there is a factor of external mechanical impact, unintended, including from animals, or due to banal manifestations of vandalism.

In addition, for any owner of a private house, probably, it is not indifferent to the moments of the aesthetic appearance of the laid heatedrass.

Any thermal insulation material applied on heat insulation must have a range of operating temperatures corresponding to real application conditions.
An important requirement for insulating material and external cladding is the durability of use. No one wants to return to the problems of thermal insulation of pipes, even once a few years.
From a practical point of view, one of the main requirements is simplicable installation of thermal insulation, and in any position and on any complex area. Fortunately, in this regard, manufacturers do not get tired to please be convenient for applying developments.
An important requirement for thermal insulation - its materials must also be chemically inert, and not to enter into any reactions with the surface of the pipes. Such compatibility is the key to the duration of trouble-free operation.

The issue of cost is also very important. But in this regard, the variation of prices from specialized is very large.

What materials are used for insulation of overhead heating

The selection of thermal insulation materials for heating pipes during their outer gasket is large enough. They are a roll type or in the form of mats, they may be destroyed for the installation of a cylindrical or other figured form, there are insulation that are applied in liquid form and acquire their properties only after froze.

Warming with foamed polyethylene

Polyethylene foamed rightly refer to very efficient thermal insulators. And what is still very important, the cost of this material is one of the lowest.

The coefficient of thermal conductivity of foamed polyethylene is usually in the range of 0.035 W / m × ° C - this is a very good indicator. The smallest isolated bubbles filled with gas, create an elastic structure, and with such a material, if its roll variety is acquired, it is very convenient to work on complex pipes on the configuration.

Such a structure becomes a reliable obstacle for moisture - with the right installation, neither water nor water pairs to penetrate the pipe walls will not be able to.

Polyenethylene density is low (about 30 - 35 kg / m³), \u200b\u200band thermal insulation will not waste the pipes.

The material with some assumption can be attributed to the category of low-dangerous from the point of view of ignition - it usually refers to the class of M-2, that is, it is very difficult to ignite it, and without an external flame it quickly fades. Moreover, combustion products, in contrast to many other thermal insulators, do not represent any serious toxic hazard for humans.

Roll foamed polyethylene for the insulation of external heating mains will be inconvenient, and unprofiled - you have to wind out several layers in order to achieve the required thickness of thermal insulation. Material is much more convenient in the form of sleeves (cylinders), which provides an internal channel corresponding to the diameter of the insulated pipe. To put on the pipes usually, the length of the cylinder on the wall is made an incision, which, after installation, you can take a reliable scotch.

Wear isolation on the pipe - labor is not

A more effective type of polyethylene foam is a foam, which has on the one hand. This brilliant coating becomes a kind of thermofer, which significantly increases the insulation quality of the material. In addition, this is an additional barrier from moisture penetration.

Penofol may also be a roll type or in the form of profile cylindrical elements - especially for thermal insulation of pipes of various purposes.

And all foamed polyethylene for thermal insulation is precisely the heat paints are used infrequently. He, rather, is suitable for other communications. The reason for this is a fairly low temperature range of operation. So. If you look at the physical characteristics, the upper limit balances somewhere on the verge of 75 ÷ 85 degrees - the structure of the structure and the appearance of deformations are possible. For autonomous heating, most often, the temperature of the temperature is enough, however, on the edge, and for central - thermal resistance is clearly not enough.

Insulation elements made of polystyrene foam

All the well-known polystyrene foam (in everyday life it is more often called foam) is very widely used for various types of thermal insulation work. It is not an exception and insulation of pipes - for this, special details are made of foam.

These are usually semi-cylinders (for pipes of large diameters there may be segments in a third of the circumference length, 120 °), which for assembly in a single design are equipped with a lock connection by the type "Schip-groove". This configuration allows you to fully, throughout the surface of the pipe, ensure reliable thermal insulation, without the remaining "cold bridges".

In everyday speech, such details were called "shells" - for the obvious similarity with it. Many types of types are produced, under the various outer diameter of insulated pipes and different thickness of the thermal insulating layer. Typically, the length length is 1000 or 2000 mm.

For the manufacture, the polystyrene foam of the PSB-from various brands is used - from PSB-C-15 to PSB-C-35. The main parameters of this material are shown in the table below:

Estimated material parameters	Brand polystyrene foam
	PSB-C-15U	PSB-S-15	PSB-C-25	PSB-C-35	PSB-S-50
Density (kg / m³)	to 10	up to 15	15.1 ÷ 25.	25.1 ÷ 35.	35.1 ÷ 50.
Compressive strength at 10% of linear deformation (MPa, not less)	0.05	0.06	0.08	0.16	0.2
Bending tensile strength (MPa, not less)	0.08	0.12	0.17	0.36	0.35
Thermal conductivity in a dry state at a temperature of 25 ° C (W / (M × ° K))	0,043	0,042	0,039	0,037	0,036
Water absorption in 24 hours (% by volume, no more)	3	2	2	2	2
Humidity (%, no more)	2.4	2.4	2.4	2.4	2.4

The advantages of foam, as a thermal material known for a long time:

It has a low thermal conductivity coefficient.
The small weight of the material significantly simplifies insulation, for which no special mechanisms or devices are required.
Material is biologically inert - it will not be a nutrient medium for the formation of mold or fungus.
Moisture absorption is slightly.
The material is easily cutting, fit under the desired size.
Polyfoam is chemically inert, absolutely safe for the walls of the pipes, from which material they would be made.
One of the key advantages - the foam applies to the most inexpensive insulation.

However, he has a lot of flaws:

First of all, it is a low level of fire safety. Material cannot be called non-flammable and non-propagating flame. That is why when used for the insulation of ground pipelines, fire gaps should be left.
The material does not have elasticity, and it is convenient to apply only on direct pipes of the pipe. True, you can find special curly details.

Polyfoam does not apply to durable materials - it is easily destroyed by external influence. Negatively, ultraviolet radiation is also active. In short, overhead areas of pipes, insulated with polystyrene foam shells, will necessarily require additional protection in the form of metal casing.

Usually in stores where the foam shell is sold, and galvanic sheets are also offered, sliced \u200b\u200bin the desired size corresponding to the diameter of the insulation. You can use the aluminum shell, although it is definitely much more expensive. Sheets can be fixed with self-drawers or clamps - the resulting casing will create anti-vandal, anti-flexing, waterproofing protection and an obstacle from sunlight.

And yet, not even this is the main thing. The upper limit of normal for the operation of temperatures is all around 75 ° C, after which the linear and spatial deformation of parts can begin. No matter how cool, it may not be enough for heating this value. Probably, it makes sense to search a more reliable option.

Warming of pipes with mineral wool or products based on it

The most "ancient" method of thermal insulation of external pipelines - using mineral wool. He, by the way, is the most budget, if it is not possible to acquire a foam shell.

For thermal insulation of pipelines, various types of mineral wool are used - glass gamble, stone (basalt) and slag. Slotovat - the least preferable: it, firstly, most actively absorbs moisture, and secondly, its residual acidity can be very devastative to steel pipes. Even the cheapness of this wool does not justify the risks of its application.

But the mineral wool based on basalt or glass fibers is fully suitable. She has good thermal resistance indicators of heat transfer, high chemical stability, material is elastic, and it is easy to put it even on complex areas of pipelines. Another advantage - one can, in principle, is completely calm in terms of fire safety. Preheat mineral wool to the degree of ignition in the conditions of outer heating paintrass - almost unreal. Even the exposure to open flame will not be the reason for the spread of ignition. That is why Minvatu is used to fill fire gaps when using other pipe insulation.

The main disadvantage of mineral wool is a high water absorption (basalt to a lesser extent being subject to this "death"). It means that any pipeline will require mandatory protection against moisture. In addition, the structure of the wool is unstable to mechanical effects, it is easy to destroy, and it should be protected with a solid casing.

Typically, a solid polyethylene film is used, which is reliably covered by a layer of insulation, with a mandatory overlap of the bands per 400 ÷ 500 mm, and then on top of all this is closed with metal sheets - exactly by analogy with the polystyrene foam shell. Ruberoid can also be used as waterproofing - at the same time, 100 ÷ 150 mm of the adhesion of one band to another will be sufficient.

The thickness of protective metallic coatings for open areas of pipelines is determined by existing gtales for any type of thermal insulation materials used:

The material of the protective coating layer	Minimum metal thickness, with external insulation diameter
	350 or less	Over 350 and to 600	Over 600 and up to 1600
Ribbons and stainless steel sheets	0.5	0.5	0.8
Sheets of thin-sheet steel, galvanized or with polymer coating	0.5	0.8	0.8
Aluminum sheets or aluminum alloys	0.3	0.5	0.8
Aluminum ribbons or aluminum alloys	0.25	-	-

Thus, despite the seemingly inexpensive price of the insulation itself, its full-fledged styling will require considerable additional costs.

Mineral wool for insulation of pipelines can act in another quality - it serves as a material for the manufacture of finished thermal insulation parts, by analogy with cylinders from polyethylene foam. Moreover, such products are produced both for direct portions of pipelines and turns, tees, etc.

Typically, such insulation parts are made of the most dense - basalt mineral wool, have an external foil coating, which immediately removes the problem of waterproofing and increases the effectiveness of insulation. But from the external casing, it will not be possible to leave anyway - a thin layer of foil from a random or intentional mechanical impact will not protect.

Heat insulation Polyurethane Fière

One of the most efficient and safe in the operation of modern insulation materials is polyurethane. He has a mass of all kinds of advantages, so the material is used almost on any designs that require reliable insulation.

What are the features of polyurethane foam - insulation?

Polyurethane foam for insulation of pipelines can be applied in various types.

The PPU-shell is widely used, usually having an external foil coating. It can be collapsible, consisting of half-cylinders with groove-cream locks, or, for pipes of a small diameter - with a cut in length and a special valve with a self-adhesive back surface, which greatly simplifies the installation of isolation.

Another method of thermal insulation of heating mains polyurethane foam is a spraying of it in liquid form with the help of special equipment. The created layer of foam after complete hardening becomes excellent insulation. This technology is particularly convenient for complex junctions, turns of pipes, in nodes with shut-off-adjusting reinforcement, etc.

The advantage of such technology is also in the fact that due to the excellent adhesion of polyurethane foam spraying with the surface of the pipes, excellent waterproofing and anti-corrosion protection are created. True, Polynesuretan himself also requires mandatory protection - from ultraviolet rays, so without casing, it will not be able to do without casing.

Well, if the gasket is required enough of the long heatingwork, then, probably, the most optimal choice will be the use of pre-insulated (pre-isolated) pipes.

In fact, such pipes are a multilayer structure collected in the factory conditions:

- The inner layer is, in fact, the steel pipe itself of the desired diameter, according to which the transfer of the coolant is carried out.

- External coating - protective. It can be polymer (for gasket heat paint in the thickness of the soil) or metal galvanized - what is required for open areas of the pipeline.

- A monolithic, seamless layer of polyurethane foam, which performs the function of efficient thermal insulation is flooded between the pipe and the casing.

On both endpoints of the pipe, a mounting area is left for welding work when assembling the heating main. Its length is calculated in such a way that the thermal flow from the welding arc will not damage the polyurethane foam layer.

After the installation, the remaining areas that have not been solarmed are ground, covered with polyurethane foam shells, and then - metal belts, comparing a coating with a shared external pipe cover. Often, it is precisely on such sites that fire gaps organize - they are tightly filled with minvata, then it is possible to hydroize the rubberoid and everything is also closed above the steel or aluminum casing.

The standards have a specific sorting of such sandwich pipes, that is, it is possible to purchase products of the desired conditional diameter with optimal (conventional or reinforced) thermal insulation.

The outer diameter of the steel pipe and the minimum thickness of its wall (mm)	Sizes of shell of thin-sheet galvanized steel		Calculated thickness of the thermal insulating layer of polyurethane foam (mm)
	nominal outer diameter (mm)	minimum steel sheet thickness (mm)
32 × 3.0.	100; 125; 140	0.55	46,0; 53,5
38 × 3.0	125; 140	0.55	43,0; 50,5
45 × 3.0.	125; 140	0.55	39,5; 47,0
57 × 3.0.	140	0.55	40.9
76 × 3.0	160	0.55	41.4
89 × 4.0.	180	0.6	44.9
108 × 4.0.	200	0.6	45.4
133 × 4.0.	225	0.6	45.4
159 × 4.5	250	0.7	44.8
219 × 6.0	315	0.7	47.3
273 × 7.0	400	0.8	62.7
325 × 7.0	450	0.8	61.7

Manufacturers offer such sandwich pipes not only for direct sites, but also for tees, turns, compensators, etc.

The cost of such pre-insulated pipes is high enough, but with their acquisition and installation, a whole range of problems is solved immediately. So such costs are seen quite justified.

Video: The process of production of pre-insulated pipes

Insulation - foamed rubber

Peer-insulating materials and products made of synthetic foamed rubber are very popular recently. This material has a number of advantages that bring it to the leadership positions in the insulation of pipelines, including not only heating mains, but also more responsible - on complex technological lines, in the machine, air and shipbuilding:

Foamed rubber is very elastic, but at the same time has a large margin of tensile strength.
The density of the material is only 40 to 80 kg / m³.
Low thermal conductivity coefficient provides very efficient thermal insulation.
The material over time does not give a shrinkage, fully maintaining its original shape and volume.
Foamed rubber will be difficult and has the property of fast self-filing.
Material is chemically and biologically inert, it never appears neither foci of mold or fungus, nor insect nests or
The most important quality is practically absolute water and countertility. Thus, the insulation layer immediately becomes and excellent waterproofing for the surface of the pipe.

Such thermal insulation can be produced in the form of hollow tubes with an inner diameter of 6 and to 160 mm and a thickness of the insulation layer from 6 to 32 mm, or in the form of sheets that are often attached to the Self-stroke function from one side.

The name of indicators	Values
Length of finished tubes, mm:	1000 or 2000.
Color	black or silver, depending on the type of protective coating
Temperature range of application:	from - 50 to + 110 ° С
Thermal conductivity, W / (m × ° C):	λ≤0.036 at 0 ° C
Thermal conductivity, W / (m × ° C):	λ≤0.039 at a temperature of + 40 ° С
Parry perpeturation resistance coefficient:	μ≥7000
Degree of fire hazard	Group M1.
Permissible change in length:	± 1.5%

But for open-air heating parts, ready-made insulating elements made using ArmaFlex Ace technology with a special protective coating "ArmacheK" are particularly comfortable.

ARMACHEK coating can be several types, for example:

"Arma-Chek Silver" is a multi-layer PVC-based shell having a silver reflecting spraying. Such a coating provides excellent isolation protection and mechanical impacts, and from ultraviolet rays.
Black coating "Arma-Chek D" has fiberglass high-strength, but retaining excellent flexibility base. This is an excellent protection against all possible chemical, weather, mechanical impacts that will retain the heating pipe in immunity.

Typically, such products according to ARMACHEK technology have self-adhesive valves, hermetically "sealing" insulating cylinder on the body of the pipe. Figure elements are available, allowing installation in complex areas of the heating main. The skillful use of such thermal insulation allows it to quickly and reliably mount it, without resorting to the creation of additional external protective casing - it simply does not need.

The only thing that is probably hampered by the wide use of such thermal insulation products for pipelines is still a high price of real, "branded" products.

Prices for pipe heat insulation

Heat insulation for pipes

New direction in insulation - thermal insulation paint

It is impossible to miss another modern insulation technology. And it is all the more pleasant about it, as it is the development of Russian scientists. We are talking about a ceramic liquid insulation, which is still known as thermal insulation paint.

This, without any doubt, the "alien" from the sphere of space technology. It is in this scientific and technical industry that the problems of thermal insulation from critically low (in open space) or high (when starting ships and landing the descent devices) are particularly acute.

Thermal insulation qualities of ultra-thin coatings seem just fantastic. At the same time, such a coating becomes canceled by hydro and vapor insulation, protection of the pipe from all possible external influences. Well, the heating agent adopts a well-groomed, pleasant eye look.

The paint itself is a suspension of microscopic filled with a vacuum of silicone and ceramic capsules suspended in a liquid state in a special composition comprising acrylic, rubber and other components. After applying and drying the composition on the surface of the pipe, a thin elastic film is formed, which has outstanding thermal insulation qualities.

Names of indicators	unit of measurement	Value
Color of paint	white (can be changed under the order)
Appearance after applying and full of frozen	matte, smooth, homogeneous surface
Elasticity of film films	mM.	1
Adhesion coating on the power of separation from the painted surface
- to the concrete surface	MPa	1.28
- to the brick surface	MPa	2
- To Steel	MPa	1.2
Coating resistance to temperature difference from -40 ° C to + 80 ° C	without changes
Coating resistance to temperature +200 ° C for 1, 5 hours	yeah, cracks, detachals and bubbles
Durability for concrete and metal surfaces in a moderately cold climatic area (Moscow)	years	at least 10.
Thermal conductivity	W / M ° C	0,0012
Parp permeability	mg / m × h × pa	0.03
Water absorption in 24 hours	% by volume	2
Temperature range of operation	° S.	from - 60 to + 260

Such a coating will not require additional protective layers - it is strong enough to cope with all the impacts.

This liquid insulation is implemented in plastic banks (vendors), as well as ordinary paint. There are several manufacturers, and among domestic, you can especially note the brand "Armor" and "Corundum".

You can apply such a thermocracy by aerosol spraying or the usual method - roller and brush. The number of layers depends on the conditions of operation of the heating main, the climatic region, the diameter of the pipes, the average temperature of the transferred coolant.

Many experts believe that such insulation over time to replace the usual thermal insulation materials on a mineral or organic basis.

Video: Presentation of ultra-thin thermal insulation of the brand "Corundum"

Prices for thermal insulation paint

Heat insulation paint

What thickness of the heat insulation is necessary

Summing up on a review used for thermal insulation pipes of materials heating materials, it can be obtained by the performance of the most popular of them from the table - for clarity comparison:

Thermal insulation material or product	Average density in the finished design, kg / m3	Thermal conductivity of thermal insulation material (W / (M × ° C)) for surfaces with a temperature (° C)		Range of operating temperatures, ° С	A combustion group
		20 and above	19 and lower
Mineral cooker plates	120	0,045	0.044 ÷ 0.035	From - 180 to + 450 for mats, on fabric, grid, fiberglass canvas; up to + 700 - on a metal grid	Non-combustible
Mineral cooker plates	150	0,05	0.048 ÷ 0.037		Non-combustible
Plates of heat-insulating from mineral wool on a synthetic binder	65	0.04	0.039 ÷ 0.03	From - 60 to + 400	Non-combustible
	95	0,043	0.042 ÷ 0.031	From - 60 to + 400	Non-combustible
	120	0,044	0.043 ÷ 0.032	From - 180 + 400
	180	0,052	0.051 ÷ 0.038	From - 180 + 400
Thermal insulation products made of foamed ethylene polypropylene rubber "Aeroflex"	60	0,034	0,033	From - 55 to + 125	Wemologies
Mineral Cylinders and Cylinders	50	0,04	0.039 ÷ 0.029	From - 180 to + 400	Non-combustible
	80	0,044	0.043 ÷ 0.032
	100	0,049	0.048 ÷ 0.036
	150	0,05	0.049 ÷ 0.035
	200	0,053	0.052 ÷ 0.038
Mineral Wool thermal insulation cord	200	0,056	0.055 ÷ 0.04.	From - 180 to + 600, depending on the material of the mesh tube	In mesh tubes made of metal wires and glass filaments - non-combustible, the rest of weakly
Mats from glass staple fibers on a synthetic binder	50	0,04	0.039 ÷ 0.029	From - 60 to + 180	Non-combustible
Mats from glass staple fibers on a synthetic binder	70	0,042	0.041 ÷ 0.03	From - 60 to + 180	Non-combustible
Mats and wool from super-thin glass fiber without binder	70	0,033	0.032 ÷ 0.024.	From - 180 to + 400	Non-combustible
Mats and wool from super-thin basalt fiber without a binder	80	0,032	0.031 ÷ 0.024.	From - 180 to + 600	Non-combustible
Perlite sand, strolled, small	110	0,052	0.051 ÷ 0.038	From - 180 to + 875	Non-combustible
	150	0,055	0.054 ÷ 0.04.
	225	0,058	0.057 ÷ 0.042.
Heat insulation products made of polystyrene foam	30	0,033	0.032 ÷ 0.024.	From - 180 to + 70	Gorry
	50	0,036	0.035 ÷ 0.026
	100	0,041	0.04 ÷ 0.03.
Heat insulation products made of polyurethane foam	40	0,030	0.029 ÷ 0.024.	From - 180 to + 130	Gorry
	50	0,032	0.031 ÷ 0.025
	70	0,037	0.036 ÷ 0.027
Heat insulating products from Polyeneetylene	50	0,035	0,033	From - 70 to + 70	Gorry

But surely an inquisitive reader will ask: and where is the answer to one of the main emerging issues - what should be the thickness of the insulation?

This question is quite complicated, and there is no unambiguous answer to it. If you wish, you can use bulky calculation formulas, but they probably understand only by qualified heat engineering specialists. However, not everything is so scary.

Manufacturers of finished thermal insulation products (shell, cylinders, etc.) usually laid the necessary thickness calculated for a particular region. And if the mineral wool insulation is used, then you can use the data of the tables, which are shown in the Special Code of Rules, which is designed specifically for thermal insulation of pipelines and technological equipment. This document is easy to find on the network by setting a search query "SP 41-103-2000".

Here, for example, a table from this reference book regarding the above-ground placement of the pipeline in the Central region of Russia, when using mats from glass staple fiber M-35, 50:

Outer diameter pipeline MM.	Type of droverning heating
	innings	freight	innings	freight	innings	freight
	Averaged temperature coolant, ° C
	65	50	90	50	110	50
	Required insulation thickness, mm
45	50	50	45	45	40	40
57	58	58	48	48	45	45
76	67	67	51	51	50	50
89	66	66	53	53	50	50
108	62	62	58	58	55	55
133	68	68	65	65	61	61
159	74	74	64	64	68	68
219	78	78	76	76	82	82
273	82	82	84	84	92	92
325	80	80	87	87	93	93

Similarly, you can find the necessary parameters for other materials. By the way, significantly exceed the specified thickness the same set of rules does not recommend. Moreover, the maximum values \u200b\u200bof the insulating layer for pipelines are also defined:

The outer diameter of the pipeline, mm	Limit thickness of the layer of thermal insulation, mm
	temperature 19 ° C and below	temperature 20 ° C and more
18	80	80
25	120	120
32	140	140
45	140	140
57	150	150
76	160	160
89	180	170
108	180	180
133	200	200
159	220	220
219	230	230
273	240	230
325	240	240

However, do not forget about one important nuance. The fact is that any insulation with a fibrous structure in time inevitably gives shrinkage. And this means that after some time, its thickness can be not enough for reliable thermal insulation of the heating pain. Output one - even when installing insulation, immediately consider this amendment for shrinkage.

To calculate, you can apply such a formula:

H \u003d ((D. + h.) : (D. + 2 h.)) × h.× Kc.

N.- The thickness of the laying of Minvati, taking into account the correction to the seal.

D.- the outer diameter of the pipe to be insulated;

h.-Bought the thickness of the insulation according to the Table of the Code of the Rules.

Ks.- shrinkage coefficient (sealing) of fibrous insulation. It is a calculated constant, whose value can be taken from the table below:

Heat insulation materials and products	KC seal coefficient.
Mineral wool mats	1.2
Mats thermal insulation "TEKHMAT"	1.35 ÷ 1.2.
Mats and canvases from super-thin basalt fiber when laying on pipelines and equipment with conditional passage, mm:
D.	3
	1,5
Du ≥ 800 with an average density of 23 kg / m3	2
̶ The same, with an average density of 50-60 kg / m3	1,5
Mats made of glass staple fibers on the synthetic binder brand:
M-45, 35, 25	1.6
M-15.	2.6
Mats from glass staple fiber "URSA" stamps:
M-11:
̶ for pipes with Du up to 40 mm	4,0
̶ for pipes with Du from 50 mm and above	3,6
M-15, M-17	2.6
M-25:
̶ for pipes with Du up to 100 mm	1,8
̶ For pipes with Du from 100 to 250 mm	1,6
̶ for pipes with a Du 250 mm	1,5
Mineral cooker plates on the synthetic binder brand:
35, 50	1.5
75	1.2
100	1.10
125	1.05
Plates made of glass staple fiber brand:
P-30	1.1
P-15, P-17 and P-20	1.2

To help the interested reader, the special calculator is located below, in which the specified ratio has already been laid. It is necessary to enter the requested parameters - and immediately obtain the required thickness of mineralizing insulation, taking into account the amendment.