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  Finned tube structure Finned tubes are widely used in power, chemical and other industries. Many spiral heat transfer surfaces or threaded tubes can be regarded as finned tubes. It has a significant effect on expanding the heat transfer area and promoting turbulence, and it has a great effect on both single-phase-convection heat transfer and phase-change convective heat transfer.  The structure of the finned tube heat exchanger is basically the same as the general shell and tube heat exchanger. Just use finned tubes instead of light tubes as the heat transfer surface. Finned tube heat exchangers are also often used to heat or cool the gas outside the tube, and steam or water is passed through the tube, such as air coolers, boiler economizers, radiators, etc.   Finned tube material The finned tube has a wide range of materials, including stainless steel, carbon steel, titanium and copper alloys, etc. The corrosion resistance of the industry has greatly increased. Laser w...

You will need to keep the fin heat exchanger clean every once in a while. You will find that you are able to keep it clean and take care of it with proper maintenance and cleaning, the longer it will make it last longer, which will be the better job. Step 1 Open The first thing you will do is open the lid of the  air cooler . Due to the cooling process of the air cooler, fresh air from outside circulates throughout the office or home. Every air cooler is different, so unless you have to open it before, you may need to look at the instructions and check to see exactly how to do it. Improper doing so may cause damage to your evaporative air conditioner. Step 2 Check The air in your room will never be out of date. This even allows you to enjoy a free operating unit, even if the doors and windows are open. After the cooler has been turned on, it is a good idea to take the pad and double check. If they want to be in good condition without debris or molds, then they will have to be repla...

Finned tube is a kind of heat exchange element, which is often used in high temperature and flue gas space. In daily life, such as boilers, finned tubes need to be used for heat exchange execution. In such a harsh environment During daily operations, the finned tube itself is required to have corrosion resistance and stability. The finned tube is a typical heat exchange element, in order to improve the heat exchange efficiency, usually by adding fins on the surface of the heat exchange tube to increase the outer surface area of ​​the heat exchange tube, so as to improve the heat exchange For the purpose of efficiency, such a heat exchange tube. Finned tubes work under high-temperature flue gas conditions for a long time. For example, finned tubes for boiler heat exchangers are used in harsh environments, high temperature and high pressure and in corrosive atmosphere, which requires finned tubes to have high performance indicators. For example, excellent corrosion resistance. Many tim...

Stainless steel coil description: 1. Material: 304 stainless steel (316L, 321 and other stainless steel materials can be used according to user requirements). 2. Steel pipe specifications: φ8X0.5, φ12X0.7, φ16X0.9, φ22X1.0. 3. Coil size: According to different specifications, the appearance size of stainless steel coil is different. 4. Features: This kind of stainless steel coil is connected by multi-layer and multi-layer coils to form a whole, which improves the heat exchange area and heat exchange space, and the heat exchange efficiency is greatly improved. 5. Uses: steam heat, condensing tubes, etc. are used for heat exchange between the inside and outside of the steel pipe. 6. Can be made according to the special requirements of users.

Stainless steel coil description: 1. Material: 304 stainless steel (316L, 321 and other stainless steel materials can be used according to user requirements). 2. Steel pipe specifications: φ8X0.5, φ12X0.7, φ16X0.9, φ22X1.0. 3. Coil size: According to different specifications, the appearance size of stainless steel coil is different. 4. Features: This kind of stainless steel coil is connected by multi-layer and multi-layer coils to form a whole, which improves the heat exchange area and heat exchange space, and the heat exchange efficiency is greatly improved. 5. Uses: steam heat, condensing tubes, etc. are used for heat exchange between the inside and outside of the steel pipe. 6. Can be made according to the special requirements of users.

What is a finned tube To improve the heat exchange efficiency, fins are usually added on the surface of the heat exchange tube to increase the outer surface area (or inner surface area) of the heat exchange tube, to achieve the purpose of improving the heat exchange efficiency. Such a heat exchange tube is called a fin tube. Fin tube  types The finned tube is divided into square finned tube, spiral finned tube, longitudinal finned tube, spiral serrated finned tube, and inner finned tube according to shape and structure; The finned tube is divided according to the material: single metal finned tube, bimetallic composite finned tube; According to different processing techniques, finned tubes are divided into: rolled finned tubes, welded and formed finned tubes, roll-formed finned tubes, and set-shaped finned tubes. Fin tube advantages 1. Strong heat transfer ability: Compared with the light pipe, the heat transfer area can be increased by 2-30 times, and the he...

The long-term use of any item can not be separated from the care and maintenance. Murphy laser welding fin tube is no exception. So what are the specific aspects of fin tube maintenance? Generally, when water is used for circulation at the beginning of operation, there may be slight leakage. When the temperature rises to the sterilization temperature, the leakage will disappear by itself. If the leakage does not stop, the finned tube must be compressed a little more. If it is still ineffective, it is necessary to open and check the rubber gasket. It is also possible that the finned tubes are arranged in the order of numbers on the fins, which should be corrected. Regularly check whether the finned tubes are complete, whether there are deposits, coking, rust layer and other scaling adhesion, and clean them immediately. At the same time, it is also necessary to check whether the adhesion between each fin tube and the rubber washer is tight, and whether the rubber washer itself ...

The long-term use of any item can not be separated from the care and maintenance. Murphy laser welding fin tube is no exception. So what are the specific aspects of fin tube maintenance? Generally, when water is used for circulation at the beginning of operation, there may be slight leakage. When the temperature rises to the sterilization temperature, the leakage will disappear by itself. If the leakage does not stop, the finned tube must be compressed a little more. If it is still ineffective, it is necessary to open and check the rubber gasket. It is also possible that the finned tubes are arranged in the order of numbers on the fins, which should be corrected. Regularly check whether the finned tubes are complete, whether there are deposits, coking, rust layer and other scaling adhesion, and clean them immediately. At the same time, it is also necessary to check whether the adhesion between each fin tube and the rubber washer is tight, and whether the rubber washer itself is in...

Compared with other technologies, laser-welded stainless steel finned tube can greatly save material cost and achieve high penetration rate, effectively prevent the corrosion of its gap during use, thus effectively extend the service life of its equipment to a certain extent, and reduce the thermal resistance of its heat transfer. In terms of quality control of laser-welded stainless steel finned tube, its equipment mainly adopts its CCD monitoring system in the production process, monitors the welding area in the whole process, approves the first piece, USES the metallographic analysis system, obtains the welding status, and ensures the product quality qualified before continuous production. www.murphyfinnedtubes.com Laser-welded stainless steel finned tubes are widely used in chemical engineering, power engineering, air conditioning engineering, petrochemical engineering and refrigeration engineering, such as surface air cooler, air heater, fan coil used in air conditioning engi...

Finned tube is a common heat exchange component in our heat exchangers. In these finned tubes, the functions of finned tube in each category are different, the differences are as follows: Single metal composite finned tube is made of aluminum tube rolled as a whole, called aluminum rolled finned tube, no contact thermal resistance, high strength, heat resistance and mechanical vibration, good thermal expansion performance, and has considerable expansion heat transfer surface. This kind of fin tube heat exchanger, the effect is preferred to the series or wrap heat exchanger, is a very wide use of heat exchanger. The single metal composite finned tube can also be directly rolled by steel tube or copper tube. The difference between bimetallic finned tube and single metallic finned tube technology center home page straight  straight  double metal finned tube and single metal finned tube, the difference between finned tube is a common heat exchange component in our heat exchanger...

The raw material of carbon steel tube is round tube blank. The round tube blank is cut and processed by cutting machine to billet with a length of about 1 meter, and then sent to the furnace by conveyor belt for heating. The billets are fed into a furnace and heated at a temperature of about 1200 degrees Celsius. The fuel is hydrogen or acetylene. The temperature control in the furnace is the key problem. Generally more common puncher is tapered roller puncher, this kind of puncher has high production efficiency, good product quality, large perforation diameter, can wear a variety of steel. After perforating, the round tube blank is successively rolled, rolled or squeezed by three high. After extrusion, take off the pipe to determine the diameter. The sizing machine rotates the cone bit into the steel blank at high speed to punch holes to form the steel pipe. The inner diameter of the steel pipe is determined by the outer diameter length of the caliper bit. After the steel pipe dia...

Finned tube heat exchanger still belongs to shoulder-arm heat exchanger to a certain extent. The main feature of the finned tube heat exchanger is that it has an extended heat transfer surface. Therefore, in the process of heat transfer, it is not only carried out on the primary heat transfer surface, but also on the secondary heat transfer surface. The heat of the medium on the high temperature side is not only poured into the medium on the low temperature side once on the surface, but also transfers part of the heat along the fin surface height direction, that is, along the fin height direction, there is a partition poured into the heat, and then pass the heat to the medium on the low temperature side. www.murphyfinnedtubes.com Finned tube heat exchanger in the production of the material will have a certain degree of thermal resistance, in the use of the direct and heat dissipation is inversely proportional, that is to say, the higher the thermal resistance, the lower the h...

When the stainless steel finned tube is used, pay attention to the position of the scale when the finned tube is pressed back. During the operation, the rubber gasket shall not be pressed excessively, so that the ring ratio reduces the service life of the gasket. When replacing the rubber gasket of the stainless steel finned tube, Murphy experts suggest that the laser welded stainless steel finned tube needs to renew all the segments in the process of operation, so as to effectively avoid the uneven gap between the segments, which will directly affect the heat transfer effect. https://szmurphy.en.alibaba.com/product/62414268795-811592052/Murphy_Aluminum_gas_boiler_laser_heat_exchanger_Laser_Welded_Finned_Tubes_heat_exchange_for_Heat_recovery_steam_generators.html?spm=a2700.icbuShop.41413.11.4da46a21ReV6B6 https://szmurphy.en.alibaba.com/product/62414734126-811592052/Murphy_Copper_industrial_electric_boiler_laser_heat_exchanger_Laser_Welded_Finned_Tubes_heat_exchange_for_Water_H...

The stainless steel finned tube is mainly made of 304 stainless steel. Mainly used for heat exchange in two mediums. The laser welded stainless steel finned tube of Murphy has excellent technology and performance. It is an alternative product for heat exchange and waste heat recovery in boiler, power generation, petrochemical, heating, refrigeration, air conditioning and other industries. The stainless steel finned tube of Murphy can effectively improve the efficiency of heat exchanger, can effectively extend its service life in a certain extent, reduce volume and save materials. The overall rolled finned tube has no contact thermal resistance, good heat transfer performance, high strength, heat-resistant vibration and mechanical vibration, and good thermal expansion performance. The contact thermal resistance of stainless steel finned tube is low, and the product can keep a stable low value in a wide range of temperature changes. The heat transf...

The amount of heat dissipated in the finned tube is virtua l amount, that cannot be touched. If it is not measured, calculated or installed improperly, it will easily affect the heating. Therefore, Murphy  can take some measures in a targeted manner, such as increasing the number of finned tubes of the radiator, because the flow of water flowing through the radiator per unit time is constant, then the finned tube is added to the outer wall of the radiator. C an achieve the effect of increasing heat dissipation. https://szmurphy.en.alibaba.com/product/62419157392-811592052/Murphy_Copper_boiler_laser_welding_heat_exchanger_Laser_Welded_Finned_Tubes_heat_exchange_for_Solar_Water_Heating.html?spm=a2700.icbuShop.41413.31.298c6a21Pr1iAi Now the finned tube heat sink material has a certain thermal resistivity, which is inversely proportional to the heat dissipation, that means , the higher the thermal resistivity, the lower the heat dissipation. Therefore, if you want to increas...

The manufacturer of laser welded stainless steel finned tube Murphy answers: because the finned tube is connected to the tube one by one, the tube is often not round (especially welded steel tube), so there is inevitably a gap between the fin and the tube wall. If there is a gap, there is a gap thermal resistance. For this reason, the following measures are often adopted. First, apply a layer of flux on the cleaned and polished tube wall by resistance welding method, then put the fins on the tube, then connect the power supply at both ends of the fin tube, melt the metal in the flux with a large current, and weld the tube and the fins together. Secondly, zinc and tin are the main coating metals, followed by cadmium. Pipes and fins must be chemically treated to remove oxide and oil scale from their surfaces before immersion. Chromium nickel molybdenum alloy steel is cleaned with hydrochloric acid, sulfuric acid and oxidant (such as nitric acid); carbon steel is cleaned with cold hy...

Stainless steel finned tube can be divided into two basic types: longitudinal type and radial type. Other types are the development and deformation of these two types. For example, the shape of large helix angle finned tube is close to the longitudinal, and the shape of small helix angle finned tube is close to the radial fin has circular, rectangular and needle shape. https://szmurphy.en.alibaba.com/product/62412153639-811592052/Murphy_Copper_electric_boiler_laser_welded_heat_exchanger_Laser_Welded_Finned_Tubes_heat_exchange.html?spm=a2700.icbuShop.41413.37.5b646a21vXYm0Q https://szmurphy.en.alibaba.com/product/62416140164-811592052/Murphy_Stainless_steel_electric_boiler_laser_welded_heat_exchanger_Laser_Welded_Finned_Tubes_heat_exchange.html?spm=a2700.icbuShop.41413.35.5b646a21vXYm0Q Laser welded stainless steel finned tube can be set outside the tube, called outer finned tube, or inside the tube, called inner finned tube or both. Products can be classified into integral fi...