What's the use of radiators?

Keep warm! ! A tool for heat exchange, a radiator! !

Brief introduction of radiator

Working principle of radiator: The steam or hot water burned by boiler is transported to the radiator (commonly known as radiator) in the building through pipes, and the indoor temperature is raised by radiation or convection heat. Inner cavity sand-free cast iron radiator is usually called new cast iron radiator, which is a new type of high-efficiency and energy-saving radiator produced by domestic advanced casting technology, a product promoted by the Ministry of Construction and a replacement product of traditional cast iron radiator. It's outside and inside

Clean cavity, elegant shape, no decoration, good heat dissipation and high bearing capacity. The cavity is treated with high-quality internal anti-corrosion materials, which has excellent corrosion resistance. Simple structure, extremely simple installation and maintenance. Suitable for low, medium and high-rise buildings and middle and high-grade rooms. Cast iron radiator has strong adaptability to inferior water or industrial wastewater. The steel has beautiful appearance and good heat dissipation effect. Among several varieties, the steel radiator has various shapes and the most attractive appearance, while the steel radiator dissipates heat by convection, which makes the room temperature rise faster and more evenly. The price is also lower than that of the previous year. In the home building materials center, people only need to spend about 2,000 yuan to meet the housing demand of 100 square meters. There are many brands of steel radiators in the market, and the quality and price vary greatly. Relatively speaking, the quality of famous brands will be more stable. It should be noted that the steel radiator is easy to be oxidized and corroded, so it is not suitable for geothermal water heating, and it needs full water maintenance in non-heating season.

In this section, edit the working principle of radiator.

Heating can be divided into water heating and air heating. Usually radiator refers to water heating, that is, circulating water is heated by wall-hung boiler or boiler, and then linked to radiator through pipeline. Finally, the appropriate temperature is output through the radiator to form the indoor temperature difference, and finally, the whole indoor temperature is evenly increased through thermal circulation. Warm air is hot air. As soon as the cold air comes in, it is heated into hot air by the radiator. Hot air rises and forms convection with indoor cold air. Cold air circulates near the heater and is heated into hot air. Hot air circulates in the house and the room is warm.

Edit this copper-aluminum convection radiator.

Copper tube aluminum fin radiator (copper aluminum convection radiator/radiator) has many advantages, such as high compressive strength, fast heat transfer, small size, light weight, convenient installation, bright appearance, high efficiency and energy saving, and is widely used in hotels, apartments, shopping malls, schools, hospitals, residential buildings and other construction fields. Its good heat dissipation performance, novel appearance and excellent product quality are ideal products to replace the old radiator. Copper-aluminum convection radiator

Copper tube aluminum fin convection radiator, also known as copper channel convection radiator and copper tube convection radiator, originated from North American radiator. Introduced and developed by Fred, the high-grade radiator which meets the requirements of domestic water quality and environment is produced, leading the development trend of convection radiator. The copper tube aluminum fin convection radiator consists of copper tube, aluminum fin and steel plate. The working principle is that when heating, hot water passes through the copper tube, so that the aluminum fins generate heat and dissipate heat, and the space dissipates heat to the room in the form of convection.

Edit this copper-aluminum composite radiator.

Copper-aluminum composite products have good corrosion resistance. This radiator is corrosion-resistant and has a wide range of applications. However, some products are not composed of two materials, and only copper pipes are added to aluminum products. Experts suggest buying brand-name products, and the relative quality is guaranteed. In addition, although the copper-aluminum composite radiator "thin and high flat radiator" saves space, it is difficult for the boiler with household heating to meet the requirements because the higher radiator needs greater water pressure. Therefore, it is best not to choose this type of radiator for family heating.

How to choose a radiator How to choose a radiator? How to choose radiator for home decoration and what kind of heating system to choose radiator. If central heating is used in the home, horizontal radiators should be installed under the windows to prevent the invasion of cold air. If you choose vertical radiators, they should be installed on both sides of the window. Because the radiator is close to the ground, all the air in the room can convection, so the room temperature is balanced. How to choose radiator for gas boiler system and pressureless system? In the pressureless coal-fired heating system, the radiator height should not exceed 1500, and it is better to choose a radiator with a height of 600 cables, so that water can flow quickly and the radiator can effectively dissipate heat. The height of gas boiler system should not exceed 1800. If the water temperature is high, consider a radiator with a small water capacity. If the water temperature is below 60 degrees, steel should be used, so that heat can be dissipated as long as there is water temperature.

Edit the selection of radiator pipes in this section.

Selection of radiator (radiator) pipes The basis of PP-R pipes and fittings ① Pipes and fittings must be sanitary, nontoxic and pollution-free. (2) The heat resistance of pipes and fittings must be able to be used above 95℃ for a long time, and the short-term use temperature can be above 1 10℃, and the expansion and expansion coefficient should not be large. (3) The pressure resistance of pipes and fittings must be able to be used for a long time above the water pressure 10bar, and it has the characteristics of high strength, no leakage and no rupture.

(4) Pipes and fittings shall be corrosion-resistant and free from scaling. ⑤ The pipeline has good thermal insulation effect and low thermal conductivity. ⑥ The internal and external walls of pipes and fittings should be smooth, with small flowing resistance, soft color and beautiful appearance. All landowners hot melt connection and installation should be convenient and reliable. Today, the nominal pipe diameter of pipes and fittings should meet certain manufacturing standards and universality, and the general pipe diameter here is DN20/25. Pet-name ruby design flow of the pipeline should not be too large, and the water flow velocity in the inner diameter of the pipeline should not be greater than 0.8 ~1.0m/s. Too high flow velocity is unfavorable to the system resistance, and too low flow velocity will increase the system cost, so it should be fully considered when selecting.

Edit this paragraph radiator industry standard vocabulary.

Standard radiator quantity: the heat emitted by the heating radiator per unit time under standard working conditions. Wall thickness of cast iron radiator: 3-3.5mm Material of cast iron radiator: according to the national standard, the material of cast iron radiator is cast iron 100, and our company adopts cast iron 150. So please feel free to buy our products in terms of materials. Generally, the wall thickness of steel radiator is above 1.2 mm, 1.2mm- 1.6mm is thin steel radiator, and above 1.8mm is thick steel radiator. Material of steel radiator: one is a thin-plate carbon high-quality cold-rolled steel plate with common thickness δ= 1.2~ 1.5mm; The other is based on the type of pipeline, in which water pipe and trachea are the basic elements of water flow. The wall thickness of copper-aluminum composite radiator is 0.8mm for horizontal tube and 0.6mm for vertical tube. Aluminum: 0.6 mm

Edit the steel-aluminum composite radiator in this section.

Steel-aluminum composite radiator is a kind of synthetic radiator product refined by special welding process, and all indexes reach the ministerial standard. The surface of the composite radiator adopts a new process of electrostatic plastic spraying, which has strong adhesion and long service life. Composite radiator products have the characteristics of fast heat transfer, high pressure resistance, beautiful decoration, warm water and heating, and are widely used in luxury buildings such as houses, hotels, hospitals and offices.

Edit the technical standard of radiator in this section.

The material of radiator shall comply with the provisions of GB 13237, and the thickness of waterway pipe shall be1.5 mm. The radiator shall be subjected to water vapor pressure test one by one, and the pressure bearing capacity shall not be less than1.6mp. The water inlet and outlet pipes of radiator shall be arranged under the radiator, and the water inlet and outlet pipes shall not be arranged on the side. The center distance between the inlet and outlet pipes is 120MM, and the error is less than 5+/-5mm. The radiator shall be made of high-quality cold-rolled low-carbon steel pipe, and the room shall be double-lapped with elliptical pipes, with the diameter of water holes reaching15 ㎜; The radiator pipe should have at least one uniform, dense, acid-resistant, alkali-resistant, high-temperature resistant and oxygen-resistant protective layer, and provide the construction technology, practice and test report of the inner cavity protective layer. The thread of radiator pipe interface shall comply with the provisions of GB/T 7303, and 3-5 threads shall be ensured to be intact, and there shall be a protective cap at the thread of connecting pipe. Each group of radiators is equipped with 1 movable manual running air. The radiator welding shall comply with the provisions of GB/T 985 GJB48 1, and the weld shall be straight, uniform, neat and beautiful, and there shall be no defects such as cracks, blowholes, incomplete penetration and burn-through. The solder joints of spot welding shall be uniform, the distance between adjacent solder joints shall not be greater than 40MM, and the solder joints shall not have defects such as burning through. The radiator pipe and water pipe must be welded firmly. The external surface of the pre-treated radiator should adopt electrostatic plastic spraying technology, and the surface of the paint film should be smooth, flat and uniform, and there should be no bubbles, accumulation, flowing and missed spraying; The thickness of primer is not less than 15μm, and the thickness of paint film is not less than 60μ m; The adhesion of paint film shall meet the requirements of 1-3 specified in GB/T 1720; The impact resistance of paint film shall comply with GB/T 1732. The material coated on the surface of radiator should be non-toxic and tasteless, which can not produce harmful substances to human body at high temperature, nor can it reduce its own physical properties. The diameter of inlet and outlet pipes, air leakage and plug of radiator is DN 15. The number of brackets equipped with radiators should not be less than the number specified in T22 in L90N92-49, and each bathroom radiator should not be less than 4 brackets. The toilet radiator is an oval steel tube basket radiator with towel rack. When the inlet and outlet water temperature is 80C/60C, the heat dissipation of each group is not less than 685W. The distance between the center of the riser of the bathroom radiator is 570mm, the height is within 1 m, and the aspect ratio is beautiful. Equipotential connection devices and terminals shall be provided. The radiator shall be free from obvious deformation, scratches, bumps and burrs.

Edit the material of the radiator.

Material of radiator: 1, cast iron radiator; 2, steel string radiator (these two are old-fashioned.

Membrane, mainly used for heating in big cities in the north). At present, the new heat dissipation gases are: 1, steel pipe (that is, steel pipe type, including round pipe and flat pipe, etc. ); 2. Steel plate (mainly imported from Europe, with good heat dissipation effect and high requirements for production technology, but not suitable for central heating because there is no internal corrosion protection); 3, aluminum alloy type (cheap, short life); 4, copper-aluminum composite (now there are steel-aluminum composite, stainless steel-aluminum composite); 5. Cast aluminum and so on. In recent years, a new type of "vacuum-free superconducting radiator" has appeared in the market, which is a new product developed and updated on the basis of the traditional radiator. This product is filled with water in a steel pipe clamped at the bottom of the radiator, and a small amount of superconducting liquid is injected into the inner cavity of the radiator. When hot water passes through the connecting pipe at the bottom of the superconducting radiator, superconducting liquid in the superconducting radiator is activated. The activated and gasified high-temperature gas radiates heat outward through the surface of the radiator, and is cooled and refluxed to the heat source to be activated and gasified. Work repeatedly in this way to achieve the purpose of heat dissipation. Vacuum-free superconducting radiator is an upgraded product of vacuum superconducting radiator. The difference is that the vacuum superconducting radiator needs a vacuum pump to vacuum the inner cavity of the radiator, while the vacuum-free superconducting radiator forms a vacuum by thermal injection under normal environment. It not only saves the step of vacuumizing with a vacuum pump, but also solves the problem of difficult after-sales maintenance. If the radiator is not hot, you don't need to disassemble it. Just open the valve, add superconducting liquid, and then screw the valve to death.

Edit this die-cast aluminum radiator.

In China, die-casting aluminum radiator is also called European aluminum radiator. The main feature is that the head of each column has a die-casting air deflector, and the columns are connected into a whole through internal connection. This radiator has been manufactured and used in Europe for more than 60 years and is the most widely used radiator in Europe. Mature technology and technology ensure the manufacturing quality of radiator, and its oxygen corrosion resistance makes it have a good service life, so its reliability is very high. Aluminum has good thermal conductivity and high thermal strength of metal, which means that aluminum radiator can dissipate more heat with less materials, so it can save resources well in product manufacturing. The radiator has a large heat dissipation and can be well controlled, so the indoor temperature can be controlled as needed in use to reduce unnecessary waste. The radiator has high thermal efficiency, which can reduce the transportation amount of heat medium water and reduce the transportation energy consumption. Therefore, the energy-saving effect of Euroaluminum radiator is remarkable. Die-casting aluminum radiator has less consumables and easy processing, so it has the least impact on the environment in manufacturing. The surface of radiator is generally protected by plastic powder, which does not volatilize harmful substances, so it is harmless to the environment and human body. The radiator has a good wind guiding structure, and will not smoke on the wall or ceiling, which can reduce the trouble caused by indoor repainting and the harm to the environment and human body. Therefore, the European aluminum radiator is one of the most environmentally friendly and green radiators. Die-cast aluminum radiator is very simple in appearance, can be well integrated with the wall, and coexist harmoniously with various styles of furniture and decoration, in line with modern aesthetics.

Edit the model and specification of the radiator in this section.

Radiators are usually distinguished according to the width and thickness of a single piece. For example, a 60-head 1800 high steel radiator means that the width of a radiator is 60mm. The height is1.8m high. Generally, the unit of 600*450 written on the radiator is millimeter.