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Why is the application efficiency of finned tube high?
2022 / 11 / 08
Finned tube is a kind of heat exchange element when it is put into operation. To some extent, it is to further improve the heat transfer efficiency. In most cases, by adding fins on the external surface of the heat exchange tube, the total area of the external surface of the heat exchange tube is expanded, which can achieve the effect of improving the heat transfer efficiency. Finned tubes, as heat exchange elements, work for a long time under the conditions of high temperature industrial exhaust gas, such as the harsh application environment of finned tubes for boiler heat exchanger, high temperature and high pressure, and corrosive environment, which requires finned tubes to have high performance parameters. Finned tube has relatively high corrosion resistance during use; In fact, most of the time, when we are working on an item normally, the application of finned tubes basically shows its unique environmental advantages, adds a lot of additional functions, and also improves the application functions on the basis of the original facilities, better facilitating the use of scenes in daily life. The abrasion resistance is also an obvious characteristic of finned tubes. In the process of assembling some parts, the abrasion resistance of finned tubes will always help the application of equipment durability. Some necessary devices are not volatile during use. The finned tubes improve the real identification ability of equipment, which also better reflects that they have more practical advantages under the protection of the environment. Finned tube is a kind of wear resistant, new and efficient heat exchange material. It is a kind of efficient and energy-saving heat exchange element in the process of use.
High efficiency of spiral finned tube and several manufacturing methods
2022 / 11 / 02
The spiral finned tube is very simple and economical in the process of installation. Its equipment length can reach 6 meters, reducing the connection points, making the installation more economical and fast, and reducing the probability of water leakage at the connection. The maintenance is simple. After the installation of high-frequency welding spiral finned tube, the maintenance is basically unnecessary. The spiral finned tube has high efficiency. Its heat dissipation area is more than 8 times that of the smooth tube when it is used. During the operation, its interior will be more smooth, its internal water flow resistance is small, and its service life is long when it is operated. The mechanical strength of the finned tube is high, and the tensile strength is more than 200Mpa. The inside and outside of the tube are all hot-dip galvanized. Material of weldable fins: carbon steel, corrosion-resistant steel, stainless steel, alloy steel. Form of weldable fins: solid teeth, open teeth. Spiral finned tubes can be manufactured by various methods in the process of manufacturing. At present, finned tubes used in heat exchange equipment such as boilers and pressure vessels mainly have the following manufacturing methods: High frequency resistance welding spiral finned tube High frequency resistance welding of spiral finned tube is to introduce high power high-frequency current into the weldment, use the resistance heat generated by the current passing through the contact surface of the weldment joint and the adjacent area to make the welding contact surface reach
High efficiency of spiral finned tube and several manufacturing methods
2022 / 11 / 02
The spiral finned tube is very simple and economical in the process of installation. Its equipment length can reach 6 meters, reducing the connection points, making the installation more economical and fast, and reducing the probability of water leakage at the connection. The maintenance is simple. After the installation of high-frequency welding spiral finned tube, the maintenance is basically unnecessary. The spiral finned tube has high efficiency. Its heat dissipation area is more than 8 times that of the smooth tube when it is used. During the operation, its interior will be more smooth, its internal water flow resistance is small, and its service life is long when it is operated. The mechanical strength of the finned tube is high, and the tensile strength is more than 200Mpa. The inside and outside of the tube are all hot-dip galvanized. Material of weldable fins: carbon steel, corrosion-resistant steel, stainless steel, alloy steel. Form of weldable fins: solid teeth, open teeth. Spiral finned tubes can be manufactured by various methods in the process of manufacturing. At present, finned tubes used in heat exchange equipment such as boilers and pressure vessels mainly have the following manufacturing methods: High frequency resistance welding spiral finned tube High frequency resistance welding of spiral finned tube is to introduce high power high-frequency current into the weldment, use the resistance heat generated by the current passing through the contact surface of the weldment joint and the adjacent area to make the welding contact surface reach
Heat Transfer Effect and Service Life of Stainless Steel Finned Tubes
2022 / 11 / 02
When stainless steel finned tubes are used, the effective space increases the heat exchange area, effectively improves the heat transfer effect, and reduces the space occupied by the heat transfer surface during operation, which can reduce its volume, especially for fast loading boilers. The stainless steel finned tube reduces the equipment cost and improves the safety of the equipment. In the process of operation, due to the reduction of the pressure drop at the water side, the operating cost decreases. During the operation, the stiffness of the finned tube increases and the seismic resistance of the tube is improved. Heat Transfer Effect of Stainless Steel Finned Tubes The heat transfer effect of high frequency resistance welding and brazing spiral finned tubes is at least 4 times higher than that of bare tubes. The heat transfer effect of finned tube with open teeth is better than that of integral finned tube. However, it should be noted that the welding rate of the welds between fins and tubes is not 100%, and the standard provisions are only more than 80%. The unfused part has thermal resistance, which will affect the heat transfer effect. The 100% contact between the fins of the integral spiral finned tube and the main tube, plus the small R transition between the fin root and the main tube during forming, not only increases the stiffness and pressure bearing capacity of the fins, but also facilitates the heat transfer. Its heat transfer effect can be improved by at least 5-6 times than that of the bare tube, which is obviously superior to the heat tran
Benefits of using laser to weld finned tubes
2022 / 10 / 25
Laser welded finned tubes are mainly used for civil wall hanging and industrial boilers in the process of use. Foreign technologies are mainly used for operation. Its main advantages are that the contact thermal resistance is zero, the whole equipment is welded at high frequency, the winging rate is large, the weight is light, the assembled heat exchanger is compact, the energy efficiency is high, and the emission requirements are met. When laser welded finned tubes are manufactured, there are many kinds of finned tubes in China. If high-frequency welding finned tubes are mainly used during operation, it has more advantages in product quality and production automation than inlaying, brazing and other methods. However, because the root of high-frequency welded finned tubes is difficult to penetrate and there are wrinkles at the root, there are many shortcomings in the heat exchange efficiency and preventing gray accumulation of high-frequency welded finned tubes. In view of the above reasons, there are policies for energy conservation and emission reduction. Benefits of using laser to weld finned tubes 1. The thickness of the base tube can be 0.8-1.5mm, and the thickness of the pin in operation can be 0.3-1mm. Compared with other process costs during operation, the material cost can be greatly reduced. 2. The laser welded finned tube has a high welding joint ratio, which can prevent the corrosion in the working time gap, effectively extend the service life and reduce the heat conduction resistance. 3. When laser welding fin tube breaks through the material limit, other materials shall be used for processing.
Processing technology, structure and selection basis of steel aluminum composite finned tube
2022 / 10 / 25
1. Overview of steel aluminum composite finned tube: The processing technology of steel aluminum composite finned tube is to first process the double metal composite tube on the aluminum tube and copper tube, and then, after mechanical cold rolling, make use of the physical characteristics of aluminum tube, and use the tube centered on the steel tube and the fin tube closely combined with the aluminum needle made by cold rolling. When the steel aluminum composite fin tube radiator is wet cooled in the heating and air-conditioning project, it is easy to remove the condensation water on the external surface of the fin, and it is not easy to produce dust and dirt in the drying heating and other heat exchanges. 2. Characteristics of steel aluminum composite finned tube: 1. Solid combination, small thermal resistance and good heat transfer performance. High strength and small flow loss. 3. It has strong anti-corrosion performance, is not easy to deform under long-term cold and hot conditions, and has a long service life. 3: Structural diagram of steel aluminum composite finned tube: 4. Performance table of steel aluminum composite finned tube specification: Finned tube radiator (radiator, also known as heat discharge, air heater and air heat exchanger) is the main equipment of heat exchanger, including cooling air with refrigerant, heating air with heat medium or recovering air waste heat with cold water. Access Warm water, steam or high-temperature heat tra
Introduction to Finned Tube Heat Exchanger
2022 / 10 / 18
The finned tube heat exchanger is the choice of many large scale site heating equipment at present, because it can not only ensure the specific requirements of consumers for room temperature, but also control the temperature and heat dissipation, effectively ensuring the comfort of the room, and the finned tube heat exchanger has excellent heat dissipation function, which can raise the temperature of the room in a short time after the machine is turned on. The finned tube heat exchanger is usually made of stainless steel tubes. The stainless steel tubes are made into the shape of the finned tube radiator according to a certain degree of welding process. The welding gap is narrow and smooth, the shape is cleaner, and the welding process is firm and durable. The welded finned tube heat exchanger is less cracked and more durable. The finned tube heat exchanger is easy to install and use. The standard length of the heat pipe radiator can reach 6 meters, greatly reducing the junction, so it also greatly reduces the possibility of water leakage of all heat pipe radiator pipes. Finned tube radiator is durable, safe and reliable in application. The working life of heat pipe radiator can be between 30-50 years, which also increases the service life of all heating systems.
Finned tube radiator for industrial drying
2022 / 10 / 18
Due to its compact structure and good heat transfer performance, the finned tube radiator dedicated for industrial drying is widely used in electric power, driving force, chemical plants, etc. It is an efficient heat exchanger with excellent application prospects. Therefore, strengthening its heat transfer performance has always been one of the research focuses of heat exchanger strengthening heat transfer. The slit structure is fabricated on vertical fins, It can enhance the development trend of the boundary layer destroyed by the fluid disturbance at the fin side, and improve the heat transfer performance of the finned tube radiator for industrial drying. At present, for the heat transfer and pressure performance of slotted fin heat exchanger of industrial drying dedicated finned tube radiator, experts around the world have achieved a lot of scientific research according to the way of modeling experiment and numerical simulation. The flowability and heat transfer performance of slotted fin heat exchanger with different tube rows, fin spacing and fin wall thickness were studied, and the basic characteristic number correlation between the fin side thermal conductivity and resistance coefficient was fitted. It is found that compared with the other basic parameters of fin structure, the layout method of fin spacing and slot structure has more obvious interference on the performance of industrial drying dedicated fin tube radiator. The interference of the type, total number and layout method of slotted structure on the performance of slotted fin heat exchanger is studied. It is found that when the number of slits is the same, the slits on the fins are arranged in a "front sparse and back dense" way, which can improve the overall cooperation of the fluid ambient temperature and velocity field between the tube bundles and improve the heat exchange level
Laser Welded Finned Tubes For Water Heaters
2022 / 10 / 14
Laser welded finned tubes are used in civil wall mounted furnaces and industrial boilers. German technology is just emerging in China, but it has a history of more than ten years in Europe. Its advantage is that the contact thermal resistance is zero. Compared with high-frequency welding, it has the characteristics of large fin to chemical ratio, light weight and compact volume of assembled heat exchanger. It is more energy-saving and environmental friendly and meets the national emission requirements It is made of stainless steel, titanium, copper, carbon steel and other materials, mainly high-frequency welded finned tubes. Although it is more advanced in product quality and production automation compared with inlay, brazing and other methods, there are still many deficiencies in heat exchange efficiency and ash prevention of high-frequency welded finned tubes due to factors such as difficult penetration and wrinkles at the root of high-frequency welded finned tubes. In view of the above reasons and in response to the national guidelines and policies on energy conservation and emission reduction. Laser welded finned tube is the most advanced product.
Laser Welding Finned Tube Of Gas Boiler
2022 / 10 / 14
As the most advanced product at present, laser welded finned tube has irreplaceable advantages. 1. The thickness of the base tube can be greater than 1mm, and the thickness of the fin can be between 0.4-1mm, which greatly saves the material cost compared with other processes. 2. High penetration rate can prevent gap corrosion, prolong service life and reduce heat transfer resistance. 3. Break through the material limit and use different materials for processing. 4. Easy for secondary processing, coil and elbow can be directly processed. 5. The welding heat affected zone is small and the metallographic change is small, which makes the processing of small diameter finned tube possible. Laser welding finned tube welding is a very complex physical and chemical process, which involves the interaction between laser, material and plasma. However, in the process of laser welding, what affects and determines the welding forming conditions such as weld depth is the welding specification parameters such as laser power, welding speed, defocus and focus size. We have strict control over the above.
High frequency welded finned tubes for greenhouses
2022 / 10 / 12
High frequency welded finned tube radiator can be used in the water passing system to improve the indoor temperature through the circulation of hot water in the radiator pipe; It can also be used in the steam heating system. High temperature steam is used as the main heat transfer medium, and the heating speed is faster; It can also be used in the heating system of heat transfer oil. The fluidity of heat transfer oil is relatively good, so the heating efficiency of heat transfer oil fin tube radiator is also high. The steel finned tube radiators for greenhouses can be processed into radiators of different types, specifications, sizes and models according to the actual needs of users, to meet the requirements of greenhouses of different areas, environments and needs. Finned tube radiator, as a kind of heat dissipation device often used in large areas, is characterized by high heat dissipation efficiency, excellent heating effect, simple operation, wide application range, low thermal inertia, and long service life. It is a very cost-effective heat dissipation heating device.
Structure of finned tube radiator
2022 / 10 / 12
Finned tube radiator is made of steel pipe. Finned tube radiator is welded on the base pipe. The steel pipe has excellent pressure bearing capacity and heat transfer capacity. Radiators are generally used for indoor heating and drying. The greenhouse seamless finned tube radiator is a heating equipment applied in the greenhouse environment, with excellent heating effect. The larger the fins of finned tube radiator, the larger the heat dissipation area and the greater the heat dissipation capacity. The medium is generally water, steam and heat transfer oil. The radiator can be opened at work and closed at work. Steel finned tube radiator has certain energy-saving characteristics in the heating system, which can save users a lot of heating costs. Finned tube radiator has good corrosion resistance and environmental protection, and is usually used in chemical plants, power plants, boiler rooms and other large area heat dissipation places. It can be heated up in a few minutes after opening, with fast heating and even heat dissipation. The appearance of steel finned tube radiator has well replaced the traditional cast iron radiator and the traditional steel radiator, and has become a more popular heating equipment for modern people.
Brief introduction of high-frequency welded finned tube
2022 / 10 / 12
High frequency welded finned tube, as one of the better heat dissipation components, is widely used in industry, chemical industry, light industry and other different fields. High frequency welded finned tube is made of high frequency welding process, which is more compact in structure and more safe and reliable in use. The high-frequency welding process used for high-frequency welding of finned tubes can be said to be a relatively good and advanced welding process at present. The structure welded by high-frequency welding process is more compact. The radiator with high-frequency welding finned tubes has increased the area of the equipment that contacts the air, thus improving the heat dissipation efficiency of the radiator. High frequency welded finned tube has fast welding speed and high production efficiency, so it can be produced more quickly in the production process to provide warmth for users who need it more quickly. Steel high-frequency welded finned tubes are widely used. In heating systems, drying systems or boiler systems, high-frequency welded finned tubes can dissipate heat with high heat dissipation efficiency.
Brief Introduction of Industrial Finned Tubes
2022 / 10 / 11
Industrial finned tubes are mostly used for base tubes with a diameter of 10-219mm. The finned tubes are welded on the surface of the base tubes using the principle of high-frequency welding. This kind of finned tube has high heat transfer coefficient, high fin thickness, is more solid than other finned tubes, and the fins are relatively not easy to be damaged. Long service life and good effect. The products have passed the strict air pressure test, and there is no leakage point within 30 minutes, ensuring the quality of use, so that customers can use them with more confidence. The installation, use and maintenance of industrial finned tubes are simple and convenient, and they are very practical and compact. With the increase of heat transfer area per unit volume, the heat transfer capacity is enhanced. Compared with bare tubes with the same heat load, the finned tube heat exchanger has fewer tubes. Due to its compact structure and convenient layout, the diameter or height of the cylinder can be reduced. Strong heat transfer capability. Industrial finned tubes are widely used for heating and cooling in petrochemical, machinery, metallurgy, rubber, printing and dyeing, medicine, food, power plants, passenger cars, drying and other industries. They are the most ideal heat exchange elements in cracking furnace, conversion furnace convection section, air preheater, economizer, heat exchanger, crystallizer, radiator and heat pipe technology.
High frequency welded fin tube radiator welding
2022 / 10 / 11
High frequency welded finned tube radiator is made by high frequency welding process, and its medium is generally water, steam and heat transfer oil. It can be divided into high-frequency welded spiral finned tube, high-frequency welded galvanized finned tube, high-frequency welded finned tube and other structures. According to the caliber and process, finned tube radiators can be divided into many types. High frequency welded finned tube radiator generally adopts flange connection and screw connection. The heat pipe radiator occupies a small area and can be combined and placed indoors as required. High frequency welded finned tube heat pipe radiator uses the form of convection heat transfer to increase indoor humidity. The heat pipe has high heat dissipation efficiency, and the actual heating effect is good. High frequency welded finned tube heat pipe radiator is widely used, and better equipment is selected by more and more consumers. At present, high-frequency welded finned tube heat pipe radiators are mostly used for heating or baking in industrial plants, vegetable greenhouses and other places. The heat supply capacity of high-frequency welded finned tube heat pipe radiator is large, which can improve the indoor temperature in a short time and enhance the comfort of everyone in the room.
What factors affect the frontal wind velocity of finned tube heat exchanger?
2022 / 10 / 10
The determination of the face velocity of finned tube heat exchanger not only affects the calculation method of heat transfer coefficient and air resistance, but also relates to the determination of heat balance and heat transfer area of finned tube heat exchanger. What two factors constrain the size of the headwind speed? Next, let's make a detailed analysis. 1. Increasing the face wind speed can improve the film heat transfer coefficient of finned tube heat exchanger, expand the heat transfer temperature difference and reduce the heat transfer area. However, when the wind speed is increased, the air song will expand rapidly, while the expansion of the heat transfer coefficient is relatively slow. Too high wind speed will lead to poor performance of the fan, and at the same time, it is difficult to match the motor and transmission mechanism. On the other hand, too low wind speed will lead to low heat transfer coefficient and expansion of heat exchange area and equipment cost. Therefore, the size of the frontal wind speed has a reasonable and effective range. 2. The head-on wind speed is corresponding to the total air volume. The face wind speed of finned tube heat exchanger is calculated according to the total air volume and the determined size of the windward face of the heat exchanger. On the whole, the wind speed of finned tube heat exchanger shall be kept within a reasonable and effective range according to the total air volume and the size of the windward area from beginning to end, so as to obtain a higher heat transfer coefficient and a reasonable and effective heat transfer area, thus keeping the designed fin
Product introduction of finned tube
2022 / 10 / 10
Finned tubes, also known as heat sink tubes, are divided into single metal finned tubes and bimetal finned tubes. Single metal finned tube is rolled from aluminum tube as a whole, which is called aluminum rolled finned tube. It has no contact thermal resistance, high strength, heat resistance and mechanical vibration, good thermal expansion performance, and considerable extended heat exchange surface. The heat exchanger made of this kind of finned tube is a widely used heat exchanger, and its effect is better than that of the series or wound plate heat exchanger. Single metal finned tubes can also be directly rolled from steel tubes or copper tubes. The bimetal composite finned tubes are divided into steel aluminum composite finned tubes and copper aluminum composite finned tubes. Steel aluminum composite finned tube is rolled out of fins after being compounded (steel pipe, aluminum tube; or stainless steel tube, aluminum tube), and copper aluminum composite finned tube is rolled out of fins after being compounded (copper tube, aluminum tube). It has the advantages of tight combination, small thermal resistance, good heat transfer performance, high strength, small flow loss, strong corrosion resistance, not easy to deform under long-term cold and hot working conditions, and long working life. The integrally rolled fins are free of burrs and wrinkles, easy to clean, easy to remove the condensation water on the surface of fins during wet cooling in heating and air-conditioning projects, and not easy to dust and scale in drying heating and other heat exchange occasions. The surfa
What are the main characteristics of finned tube heat exchanger?
2022 / 10 / 10
1. The high temperature resistance of finned tube heat exchanger can reach 950 ℃. 2. The total heat transfer film coefficient K of finned tube heat exchanger is high, the heat transfer efficiency is 1.5 times of ordinary tubes, twice of finned tubes, and 10% - 15% higher than that of the same type of plate in China. 3. Finned tube heat exchanger can adopt elastic structure design, so that the problem of thermal expansion can be solved reasonably and effectively. 4. There are sufficient tests and real operation values as support, and the data error is within 5% by making full use of constantly adjusting the calculation formula, so that more than 95% of the machinery and equipment can operate to meet the design technical parameters. Industrialized finned tube radiator is a kind of radiator developed, designed and manufactured by the radiator industry in recent years, which is composed of finned tubes, light strip plug welding as a whole or finned tubes, baffles and U-shaped headers. It has high heat dissipation efficiency, high pressure bearing, environmental protection and energy saving. It is mainly applicable to greenhouses, large and medium-sized industrial plants, and overall office production workshops. Because of its thick pipe diameter, large water storage capacity, high heat dissipation, and excellent heat transfer effect of peripheral fins, it is several times or even dozens of times the heat dissipation of ordinary radiators. It can greatly save costs and is an ideal choice for many industrial heating. It is more suitable for heating systems with hot water or steam as the medium. Finned tube heat exchanger is an indispensable machine and equipment in modern industrial heat exchange link, which is widely used in any industrial industry, especially in petrochemical industry; Metallurgy; Power; Textile,
What is the heat transfer principle of laser welding stainless steel finned tubes
2022 / 10 / 10
What is the heat transfer principle of finned tubes For many users of finned tubes, its heat transfer principle is unfamiliar to the machine. Next, we will follow the manufacturer of laser welded stainless steel finned tubes to make a detailed understanding. The manufacturer of laser welded stainless steel finned tubes said that if you want to know the heat transfer principle of finned tubes, let's first know what the heat transfer coefficient is. The heat transfer coefficient refers to the heat transfer quantity per unit temperature difference and per unit heat transfer area, which can reflect the heat transfer capacity between the fluid and the wall. Finned tubes are heat exchangers composed of round tubes or smooth tubes. How can we improve the heat transfer of round tubes? One of the effective methods is to use an extended surface on the outer surface of the tube, namely the flue gas side, to make a finned tube. It is assumed that the actual heat transfer area of the finned tube is several times of the original surface area of the bare tube. Although the heat transfer coefficient of the flue gas is still very low, the heat transfer effect reflected in the surface area of the bare tube will be greatly increased, so that the entire heat transfer process will be enhanced. When the total heat transfer is appropriate, the metal consumption of the equipment will be reduced, and the economy will be improved. Application Examples of Finned Tubes (1) Heat pipe air preheater series Application: absorb waste heat from flue gas and hea
High frequency welding of finned tube Stainless steel finned tube
2022 / 10 / 10
High frequency welded finned tubes are usually used for steam and hot water. The finned tube radiator for water and steam has strong adaptability and wide application range. Two rows, four rows and six rows of high-frequency welded finned tube radiators are common. High frequency welded finned tube radiator can be seen from the number of common tube layers. Both are double layer tubes, which also indicates that the high-frequency welded fin tube radiator is a double circuit radiator, so the water inlet end of the fin tube radiator is connected to the upper box of the radiator. Stainless steel finned tubes or finned tubes shall be repaired in time when aging or looseness is found, so as to ensure the safety of the radiator. Most spiral finned tube radiators are made of steel tubes, which have certain anti-corrosion capacity, but it is far from enough for the harsh working conditions of finned tube radiators, so it is necessary to discuss the anti-corrosion capacity of steel tubes.
Introduction to steel finned tube radiator
2022 / 10 / 10
The fin tube radiator is made by welding process. The fin tube is added to the base tube radiator to improve the heat dissipation efficiency of the radiator and increase the heating area of the radiator, so as to improve the heating effect of the entire heating system. Finned tube radiators are used for efficient heat dissipation in large workshops, workshops and greenhouses. The application fields of finned tube radiators are diversified. In many fields, such as industry, agriculture, textiles, lightness skills, printing and dyeing, finned tube radiators are often used for heat dissipation in heating systems. The models and sizes of finned tubes required by various fields are different, and finned tube radiators can be processed and manufactured according to actual needs. The diameter and length of finned tube radiator can be determined according to the customer's own needs, so as to select a more suitable radiator. The service life of the radiator can generally reach 30-50 years. There are various types of steel finned tube radiators, which can also provide personalized services according to user needs to meet the needs of various places and different users.
Application of Finned Tube Heat Exchanger
2022 / 10 / 10
Finned tube heat exchanger (TFHX) is an important part of air conditioning and heat pump systems. This type of heat exchanger consists of a bundle of finned coils. There are many structural parameters of finned tube heat exchanger (tube diameter, tube length, fin type, fin thickness, etc.), and its heat transfer performance is greatly affected by these parameters. Therefore, optimization of these parameters can usually significantly improve the performance of finned tube heat exchanger. The performance of finned tube heat exchanger will also be strongly affected by the refrigerant circuit, that is, the refrigerant flow path along different pipe systems. For a given number of coils, the number of possible refrigerant circuits is exponential and very large. Therefore, either exhaustive search method or traditional optimization is used. Finned tube heat exchanger is the most widely used type of heat exchanger in the field of refrigeration and air conditioning. Reducing the diameter of the heat exchanger can help improve the performance of the finned tube heat exchanger, reduce the volume and reduce the cost. In this paper, the development process of finned tube heat exchanger with small tube diameter in recent years is summarized, the reasons for the reduction of tube diameter are described, and the advantages of using small tube diameter copper tubes are analyzed;
Energy saving effect of fin radiator
2022 / 10 / 09
Finned radiator is one of the most widely used heat exchange accessories in gas and liquid heat exchangers. The purpose of heat transfer enhancement is achieved by adding fins of a certain height, a certain fin pitch and a certain thickness on the outer surface of the base tube by machining on the ordinary base tube. The base pipe is generally used for stainless steel pipe, copper pipe, etc., while the basic requirements of the fin material are good solderability and formability, high mechanical strength, good corrosion resistance and thermal conductivity. Aluminum and aluminum alloys not only meet these requirements, but also have the characteristics that the ductility and resistance strength increase with the decrease of temperature. The energy saving effect of finned radiator is mainly reflected in radiator water capacity, radiator height, number of assembled fins, acceptance method, radiator surface coating, material, metal thermal strength index and consumption conditions. How to achieve maximum energy conservation and efficiency at this stage is one of the R&D goals of Ximen Electromechanical from time to time. After long-term discussion, Ximen Electromechanical introduced S-type copper radiator. The copper tube is wound with copper sheet to form a copper radiator of "s" type elbow straight through structure. The inlet and outlet main pipes are on both sides of the radiator, and the airtight frame is easy to install. The working medium is most suitable for steam heat source; High temperature resistance, good thermal performance, durable.
Anticorrosive finned tube heat exchanger
2022 / 10 / 09
The particularity of the anti-corrosion finned tube heat exchanger: as a building component, the heating radiator is different from the general furniture. Its particularity lies in that it is also a hot water pressure vessel, which has the risk of (corrosion) leakage. Therefore, when users choose radiators for house decoration, they must have a certain risk awareness and be cautious. Anticorrosive finned tube heat exchanger shall be matched with the heating system: the water quality characteristics of the southern region decide to choose the radiator or new radiator with strong corrosion resistance as far as possible, and the service life of these two types of radiators can reach 25 years and more than 50 years. The radiator has the advantages of large water storage, good heat dissipation effect, light weight, high pressure bearing, beautiful spray surface and reasonable cost. Anticorrosive finned tube heat exchanger shall be matched with the heating system: the water quality characteristics of the southern region decide to choose the radiator or new radiator with strong corrosion resistance as far as possible, and the service life of these two types of radiators can reach 25 years and more than 50 years. The radiator has the advantages of large water storage, good heat dissipation effect, light weight, high pressure bearing, beautiful spray surface and reasonable cost. Consider the material of the anti-corrosion finned tube heat exchanger: because the material determines its heating performance, safety, reliability and life. In terms of heat dissipation, pure alum
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