CC BY
15APPLICATION OF HEAT STORAGE COAT FOR COMPLEX HEATING
NETWORKS
Shuxrat Adhamovich Matkarimov Boburjon Tolibjonovich Tojiboyev
Fergana Polytechnic Institute Fergana Polytechnic Institute
ABSTRACT
The results of experimental studies on the analysis and improvement of existing methods for determining the thermal conductivity are described.
Keywords and phrases: stationary method, non-stationary method, energy efficiency, thermal insulation material, thermal conductivity, microsphere, thermal insulation paint, thermocouple sensors.
Studies and analyzes have shown that the thermal insulation of external pipes, air ducts of heating networks, boilers, reactors and other equipment in the chemical industry is carried out using traditional methods, ie fiberglass or minvata, which is convenient and covers them. not difficult, but it seems difficult to wrap the heating networks and hot water supply valves and shut-off valves (valves and valves) on the outside, because their design has a shaped feature, so they are a traditional thermal insulator. Coating with materials is a complex process (requires a lot of time and money). Steklovta (Glass wool) is a fibrous mineral heat-insulating material, a type of mineral wool. The same raw materials are used to produce glass fiber as ordinary glass or glass industry waste. This does not mean that fiberglass products are not harmful to human health. Wrapping pipes with fiberglass saves time and money. Glassware lasts for a maximum of 3-5 years, with wet winters making it harder in the winter and vice versa in the summer. The glass is covered with zinc (tunic), which increases the cost of the body. In large plants and factories, in urban heating networks, this is significantly known.
To solve this problem, an analysis of modern thermal insulation materials used is
conducted, and it is proposed to use modern and high-performance liquid thermal insulation coatings to cover them.
The liquid heat-retaining coating is a hightech composite material that, after drying, forms a durable, ultra-thin polymer coating with low thermal conductivity and excellent waterproofing and corrosion protection.
Thermal insulation is like paint. Due to its fluid strength, liquid thermal insulation can be
applied to any complex shapes. It is applied with painting tools: brushes, rollers, low and high pressure sprayers.
The coating is designed for thermal insulation, waterproofing, corrosion protection of thermal and engineering networks, process pipes, heat and power and capacitive equipment, thermal insulation and protection of building structures, facades and interiors of residential and industrial buildings.
The composition is produced on the basis of acrylic binder and target filler, as well as other components in the form of hollow microspheres.
The mechanism of operation of thermal insulators with hollow microspheres, which is the basis of the composition, is radically different from the mechanism of operation of "classic" heaters.
In addition to thermal insulation properties, the coating, which contains anticorrosion additives, also has properties such as waterproofing, prolonging the service life of pipes.
The composite heat insulating composite has the property of reducing the radiating component of the heat flux from its surface due to the high reflection coefficient and distribution of a portion of the heat flux.
Based on the analysis, it is proposed to use modern and highly effective liquid thermal insulation coatings for the following purposes:
- coating of heating networks and hot water supply valves and valves;
- coating of equipment to protect personnel from burns from contact with hot metal surfaces (up to 180 C);
- Thermal insulation of external pipes of heating networks, boilers and other equipment;
Liquid thermal insulation coating not only has thermal insulation properties, but also reduces energy costs by accelerating the heating process and reducing heat loss;
The surface is pre-cleaned, primed if necessary, as a primer you can use water-diluted (not more than 5%) or any acrylic primer.
Do not apply the composition on wet, icy surfaces. The composition is applied in several layers. The number of layers is determined by the objectives depending on the tasks. Multiple layers can be applied, with the space between the layers drying.
- Covering pipes to supply cold water to refrigerators operating in rooms with poor air temperature to prevent condensation and corrosion;
- for thermal insulation and protection of facades and interiors of residential and industrial buildings;
After drying, the liquid composition turns into a durable, polymer coating, which provides excellent thermal insulation properties that reduce heat loss. The drying layer of one coating layer forms a film with a thickness of 0.1 to 0.5 mm. Due to its unique properties, the material has a clear result of energy saving even at a thickness of 1 mm.
The coating is flexible and has high viscosity at low and high temperatures. There is no residue from the base material in the coating and no cracks are formed during its long service life (up to 15 years).
The coating has high adhesion (adheres to cement-sand plaster, concrete, brick, metal, plastic, wood and other materials), prevents corrosion and condensation on cold surfaces, does not require additional protection from mechanical and atmospheric influences. Vacuum ceramic or silicone balls inside. They are a suspended component in liquid synthetic rubber, acrylic polymers and inorganic pigments. It resembles a light gray suspension, forming an elastic ultra-thin coating after drying. The combination of such components has allowed to create a unique material with flexibility, lightness, elasticity and the ability to perfectly adhere to surfaces of any shape and almost any chemical composition. Advantages:
Surkash is easy (can be done by spraying with a brush, roller and compressor);
Conciseness is reflected;
Not harmful to nature;
Does not contain harmful substances;
Good resistance to both alkalis and acids;
Does not support combustion;
Areas of application: Residential and industrial buildings (external and internal insulation); Easily installed structures; Metal structures (garages, containers,); Heating mains, pipes, ventilation ducts; Shut-off valves (valves and valves); Industrial containers; Car showrooms;
Fire resistant material. There are two other types of resistance that are specific to liquid insulation: temperature and humidity and resistance to ultraviolet radiation. The composition of liquid thermal insulation contains only environmentally friendly components, which allows it to be used indoors and outdoors, in children's institutions, public catering establishments, etc. without restrictions on their functionality.
It is very easy to apply even in places with limited access. There are several ways to apply liquid thermal insulation to the surface you choose. You just have to choose the one that suits you best. You can use a variety of tools: brushes, rollers, and so on. If your surface is concrete, use a brush to clean it of dust, mold, and oil;
* Metal surfaces should also be cleaned and degreased. If there are rust stains on the metal, it is recommended to treat them with a phosphating compound.
* Before applying the insulation, the wood should be primed with primer and biocides.
* If you are reworking a brick surface, you should first prime it and then plaster it.
Thermal insulation coating is applied to metal, concrete, brick, wood, plastic and many other surfaces. The surface is pre-cleaned, primed as needed, diluted with water of the same composition (not more than 5%) or any acrylic paint as a primer, liquid glass mixture can be used as a primer.
The coating is easily (laid) on the surface of any geometric shape using a brush, spatula, roller or sprayer. The coating does not emit harmful compounds into the atmosphere. It is recommended to use a normal respirator when working indoors without ventilation, a respirator is not required if outdoors or in a ventilated room. Average consumption for obtaining a dry coating layer with a thickness of 1 mm: 7501000 g / m2.
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