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  Classification of finned tubes http://www.glorytubetech.com/wp-content/uploads/2021/06/Classification-of-finned-tubes.jpg In order to improve the heat exchange efficiency, fins are usually added to the surface of the heat exchange tube to increase the external surface area (or internal surface area) of the heat exchange tube to achieve the purpose of improving the heat exchange efficiency. Such heat exchange tubes are called finned tubes. . Below, finned tube manufacturer Xinglida will tell you the classification of lower finned tubes. According to the shape and structure of the fin tube, it is divided into square fin tube, spiral fin tube, longitudinal fin tube, spiral serrated fin tube, inner fin tube; According to whether the fin material of the fin tube is the same as the material of the tube body, fin tube manufacturers can be divided into single metal fin tube and bimetal composite fin tubes. According to different processing techniques of finned tubes, finned tubes can be ...

  Installation method of the finned tube for gas stove finned tube for gas stove Installation method-Glorytubetech 1. The  finned tube  for the gas stove must be handled with care when transporting, and it must not be damaged. The face mask that protects the product must not be scratched. Before installation, the equipment must be in accordance with the size, and Models are classified and placed in a ventilated and dry warehouse. 2. When installing, there are two types of top-in, top-out, and bottom-out. The finned tube for the gas stove must be cleaned of the protective material on the equipment before installation, and the hanger should be placed according to the position of the fixed hole and then proceed. Just adjust. 3. The equipment uses the special finned tube specifications for gas stoves. The entire system can be tested after installation, and the heating water value in the equipment must not exceed the rated value.

  Improvement in the application of finned tube heat exchanger Improvement in the application of finned tube heat exchanger (glorytubetech.com) Although they are all  finned tubes , their functions are the same, but the manufacturing process of the longitudinal finned tube and the spiral finned tube is different. In order to enhance the performance of the finned tube, we improved the structure of the finned tube heat exchanger and tested the improved effect. Let’s see how they do it. The first is to change the finned tube in the heat exchanger, which is prone to frost at low temperatures, into a variable-pitch fin structure. In this way, it not only increases the heat transfer area of the fins in the tube, but also increases the flow velocity of the airflow in the tube, and the heat exchange effect will be significantly improved. Alternatively, the equal-pitch internally threaded tube of the finned tube heat exchanger can be turned into a variable-pitch internally threaded tub...

 Heat conduction process of integral finned tube Heat conduction process of integral finned tube-Glorytubetech In order to reduce the thermal resistance on the airside and the bottleneck effect on the airside of the integral finned tube, various measures may be taken in the design of the heat exchanger. The method is to add fins on the outer surface of the airside, that is, use finned tubes. The finned tube expands the original heat transfer area on the airside, compensates for the low heat transfer coefficient on the air side, and greatly increases the heat transfer. The greater the temperature difference required for the transfer of unit heat of the finned tube, the greater its thermal resistance will become, and its thermal resistance is equal to the reciprocal of the heat transfer coefficient, indicating that the larger the overall finned tube heat transfer coefficient, the smaller its thermal resistance, On the contrary, the smaller the heat transfer coefficient, the greater t...

  Introduction of High Frequency Welded Finned Tube high frequency welded finned tube introduction - Glorytubetech The high frequency welded finned tube is aimed at the shortcomings of the radiator made of series fins and wound fins. It is an efficient heat dissipation element. The finned tube itself is 0.8 The -1mm strip steel is wound on the finned tube. At the same time, the high frequency welding process is used to weld the sheet to the tube firmly to ensure the bonding strength of the tube and the fin. The metal thermal strength has reached 1.10～1.20w/kg℃, The finned tube is widely used in the production of boiler economizer, air preheater production and production of factory buildings, residential energy-saving radiators, and as the first choice for the later winding of heat pipes. Spiral finned tube is an efficient heat transfer element. Its heat transfer area is several to several tens of times that of a light pipe, which can enhance heat transfer, reduce flow resistance, a...

  Principle of high frequency welding finned tube The basis of high-frequency welding is to use the two major effects of high-frequency current: skin effect and proximity effect. With the help of the skin effect of high-frequency current, high-frequency electric energy can be concentrated on the surface of the workpiece, and the proximity effect can be controlled. The location and range of high-frequency current flow. When the high-frequency current is required to be concentrated on a certain part of the workpiece, under the action of the skin effect and the proximity effect, the metal ends of the adjacent two sides will be quickly heated to the melting or welding temperature, and then under the action of external pressure, The two parts can be firmly welded into one body. The welding process of high-frequency welding finned tubes is shown in Figure 1. The steel strip is evenly and steadily wound on the surface of the steel pipe according to a certain pitch. At the same time, the h...

What are the calculation steps for stainless steel finned tube water-cooled heat exchangers? The calculation of the stainless steel finned tube water-cooled air heat exchanger is based on the given equipment structure and size, and theoretical calculations are used to measure that the equipment can meet the needs of users. It is necessary to check whether the heat exchange area, fan air volume, wind pressure, motor power, etc. of the equipment meet the design requirements and whether the pressure drop in the tube is within the specified allowable range. If natural ventilation is adopted, it is also necessary to check whether the height of the air duct meets the design requirements. The calculation steps of the accounting are as follows: 1. Calculate the heat load of the water-cooled air heat exchanger from the flow rate of the medium and the temperature of the inlet and outlet; 2. Calculate the heat transfer coefficient and pressure drop of the inner film of the water-cooled air heat ...

  The daily maintenance of the integral finned tube The daily maintenance of the integral finned tube - Special tube specialist (glorytubetech.com) The daily maintenance of the integral finned tube A suitable maintenance method will have a multiplier effect on the later use of the finned tube. Carry out regular maintenance to reduce the cost and time of fin tube replacement. 1. Regularly check whether the integral finned tube is perfect, whether there are deposits, coking, scales, etc., and clean it immediately. At the same time, it is necessary to check whether the adhesion of each fin tube and the rubber gasket is tight and whether the rubber gasket itself is intact, so as to avoid leakage caused by degumming and damage to the rubber gasket. 2. The compression nut and the upper and lower guide rods of the plate heat exchanger should be frequently lubricated with lubricating grease. 3. Special personnel should be responsible for the adjustment of each instrument, and strictly impl...

Working principle of finned tube heat exchanger Working principle of finned tube heat exchanger Finned tube heat exchanger is a kind of enhanced heat transfer heat exchanger. It relies on the fins outside the tube to enhance the heat transfer on the air side. It is a very economical choice for the occasions where steam and heat transfer oil are used to heat the air. According to the different process conditions, the finned tube heat exchanger can be made of steel pipe wound steel sheet; steel pipe wound aluminum sheet, copper pipe string aluminum sheet, steel-aluminum composite bimetallic fin and other types. Advantages of finned tube heat exchanger 1. The internal working medium changes phase to realize heat transfer. The fins on the outside of the heat pipe greatly increase the heat transfer area and greatly reduce the convective heat transfer resistance on both sides. It is very economical for the recovery of low-grade heat energy; In addition, the finned tube heat exchanger can eas...

  finned tube heat exchangers In recent years, finned tube heat exchangers have been widely used in textile printing and dyeing, wood drying, grain and oil food drying, coating and baking paint dehumidification, power and petrochemical industries, and have achieved satisfactory results. Due to different process conditions and requirements, it is necessary to design various fin-tube heat exchangers that are most realistic. The following principles should be followed when designing finned tube heat exchangers; 1; In the case of a given process temperature and flow rate, the outlet must meet the temperature requirements. 2; Reasonable heat exchange area, proper design surplus. 3; On the premise of meeting the pressure loss requirements, try to increase the heat transfer coefficient, reduce metal consumption, and reduce equipment costs. 4; The choice of finned tube material takes into account fluid corrosion, wear, pressure, temperature and other requirements. 5; For temperature change...

The importance of finned tube heat exchanger in specification selection The role of the fins of the finned tube heat exchanger is to enhance heat transfer. When selecting finned tube specifications, the focus should be on enhancing heat transfer. For the enhanced heat transfer of heat exchangers, many theoretical and practical results have already been achieved. For example, by changing the fin material, improving the fin processing technology, increasing the fin ratio, improving the flow state and increasing the turbulence, etc., the height and thickness of the fin are affected by the manufacturing level and process and are limited to a certain Within the scale. The heat transfer inside and outside the tube is single-phase convective heat transfer and the heat transfer coefficient increases in proportion to the power exponent of the fluid velocity. Fluid flow is divided into the laminar flow and turbulent flow. The main mechanism of laminar and turbulent flow enhancement is to use th...