TOP QUALITY LONGITUDINAL FINNED TUBE STEAM TO AIR HEAT EXCHANGER FINNED TUBE

A. What is longitudinal finned tube? Longitudinal finned tubes are a type of finned tube where the fins are oriented parallel to the length of the tube. In other words, the fins run along the length of the tube instead of being oriented perpendicular to it. The longitudinal fins can be attached to the tube using different methods, including extrusion, rolling, or welding. The fins can be made of various materials such as aluminum, copper, or stainless steel, depending on the specific application requirements. Longitudinal finned tubes are commonly used in heat exchangers, air coolers, and other industrial applications where efficient heat transfer is required. The longitudinal fins increase the surface area of the tube, which improves the heat transfer between the fluid inside the tube and the environment outside the tube. One of the advantages of longitudinal finned tubes is that they offer a larger surface area for heat transfer compared to smooth tubes, while also maintaining good mechanical strength. They are also more resistant to mechanical wear and tear, making them suitable for applications in harsh environments. Overall, longitudinal finned tubes are a useful technology for improving the efficiency and effectiveness of heat transfer in various industrial applications. B. Longitudinal finned tubes characteristics The longitudinal finned tube is welded longitudinally along the steel pipe by high-frequency resistance welding. Fin material shall be compatible with resistance welding of steel pipe material. Before welding the fins, the external surface of the steel pipe shall be treated to ensure the welding rate of the fins. Before welding, fins shall be bent into U-shape, cut into proper length and arranged along the tube length. U-shaped finned tubes are welded in pairs, facing symmetrically and oppositely- Therefore, the total of fins is a multiple of 2. The heat transfer area of longitudinal finned tubes is 8 - 12 times higher than that of smooth tubes. As the heat transfer area increases, the volume of the heat exchanger can be greatly reduced. C. Longitudinal finned tubes Parameter ? Basic dimensions: Base Tube Diameter: 12mm-273mm Base tube wall thickness: 2.1mm-25.4mm Fin Thickness: 1mm-1.5mm Fin Qty: 1U ~ 36U fins Fin Height: 5mm-25mm Fin type: U shape ? Fin material: Carbon steel, Stainless steel, Alloy steel ? Base tube material: Carbon steel, Stainless steel, Alloy steel E. How to make longitudinal finned tube? Longitudinal finned tubes are typically used in heat transfer applications to increase the surface area of the tube and improve heat transfer efficiency. The manufacturing process involves attaching fins to the outer surface of a tube, running parallel to the length of the tube. Here are the basic steps involved in making longitudinal finned tubes: 1) Select the tube: Choose a suitable tube material based on the application requirements such as the fluid being transferred, operating temperature, pressure, and corrosion resistance. The tube can be made of various materials such as copper, aluminum, stainless steel, or carbon steel. 2) Fabricate the fins: The fins are typically made of a material that has good heat transfer properties, such as aluminum, copper, or steel. The fins can be fabricated using various techniques such as roll forming, stamping, or extrusion. The fins are typically made in a rectangular or trapezoidal shape with a thickness of a few millimeters. 3) Attach the fins to the tube: The fins are then attached to the tube using a process called brazing. Brazing involves heating the tube and fin to a temperature just below the melting point of the fin material and applying a filler metal, which bonds the fin to the tube. The fin-to-tube joint is then cooled, and excess filler metal is removed. 4) Finishing: The longitudinal finned tubes may be further processed, such as cleaning, straightening, and trimming, to remove any excess material or impurities. 5) Testing: The finished longitudinal finned tube may be tested for various properties such as heat transfer efficiency, pressure resistance, and dimensional accuracy. Overall, making longitudinal finned tubes requires specialized equipment and expertise. Therefore, it's recommended to seek the assistance of a professional manufacturer like SEGMENT Industrial to ensure the product's quality and efficiency. F. Is there any other name for longitudinal finned tube? There are other names for longitudinal finned tubes, depending on the specific application or industry. Here are a few: ? Extended surface tubing: This term refers to any type of tube that has fins or other structures added to its surface to increase the heat transfer rate. ? Finned heat exchanger tubes: This term is often used to describe longitudinal finned tubes that are used in heat exchangers, where they help to transfer heat from one fluid to another. ? Rifled tubes: These tubes have a helical groove or rifling on their inner surface, which can improve heat transfer and fluid flow. ? Turbo tubes: This is another term for rifled tubes that is often used in the power generation industry. ? Enhanced tubes: This term is often used to describe any type of tube that has been modified to increase its heat transfer rate, including longitudinal finned tubes. G. What application need use longitudinal finned tube? Longitudinal finned tubes are commonly used in applications where heat transfer is a critical factor. Some of the specific applications where longitudinal finned tubes may be used include: 1) Heat exchangers: Longitudinal finned tubes can be used in heat exchangers where the transfer of heat from one fluid to another is required. These tubes can increase the surface area of the tubes, which in turn increases the rate of heat transfer. 2) Boilers: Longitudinal finned tubes can be used in boilers where heat is transferred from the combustion gases to the water. The use of finned tubes in boilers can increase the efficiency of the heat transfer process and improve the overall efficiency of the boiler. 3) Air conditioning and refrigeration systems: Longitudinal finned tubes are commonly used in air conditioning and refrigeration systems to transfer heat between the refrigerant and the air or water that is being cooled. The fins on the tubes increase the surface area, which improves the efficiency of the heat transfer process. 4) Power generation: Longitudinal finned tubes can be used in power generation applications, such as in heat recovery steam generators (HRSGs) or in the cooling of turbine blades. The use of finned tubes can increase the efficiency of the heat transfer process and improve the overall performance of the power generation system. Overall, the use of longitudinal finned tubes can improve the efficiency and performance of a wide range of heat transfer applications, making them a valuable tool in many industries.