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Low finned tubes are generally formed by machining on the outer surface of the light tube with a certain height, a certain distance, and a certain thickness of ribs. Finned tubes are mostly used for heat exchange elements of condensers and evaporators of air conditioners, and low-finned tubes are often used in condensers. It consists of a light pipe and fins “attached” to it. The structural parameters are mainly the inner diameter and outer diameter of the finned tube, the wall thickness of the finned tube, the fin pitch, the fin thickness and the fin height. The low finned tube mainly relies on the outer rib of the tube (the ribging coefficient is 2 ~ 3) to expand the heat transfer area. Compared with the smooth tube, it has a larger surface area under the same metal material consumption. It is the first heat transfer enhancement from a straight view, but it is actually an increase in the heat transfer area and an increase in the heat transfer coefficient. The fins can make the hea

Brass is an alloy of copper and zinc. If it is only composed of copper and zinc, it is called ordinary brass. Brass is often used to make valves, water pipes, connecting pipes of air conditioners and radiators. Brass tubes are generally used to make heating coil tubes for condensers and coolers and tubes for general purposes. Brass 68 and 70 for condensers and 62 for general purpose cold drawn tubes from 3 to 100 cm OD. Its length is 1-6 meters. Tubes for condensing cooler and other heat exchange equipment shall be subject to water pressure test with pressure up to 50 kg / cm2, and the test time shall not be less than 10 seconds. Compared with the shell and tube heat exchanger, the brass tube has the following advantages: 1. High heat transfer coefficient, which is due to high velocity, turbulence and complete countercurrent; 1. The weight of equipment required for unit heat transfer is small; 1. The compensation of temperature deformation is good. What are the charact

Spiral  plate heat exchanger  is made of two parallel metal plates made of two spiral channels, heat exchanger between the hot and cold fluid through the spiral plate wall, especially in the treatment of slurry containing particles or fibers in suspension Materials or various viscous fluids. The two most important links in the production process of spiral plate heat exchangers are plate rolling and fixed-length column welding. Murphy has a fully automatic spiral plate flexible production line. The welding of coiled plates and fixed-length columns is performed by CNC operations. The studs are welded with studs, and the welding current is automatically controlled to ensure that the studs are firmly welded, free of overburning and under-welding defects. The fixed-distance columns have high welding efficiency and accurate positioning; the plate rolling force is automatically controlled to ensure The spiral body after rolling has the best tightness, so that the positioning column and the

Laser welding finned tube is processed by laser welding machine. Laser welding is a welding method that irradiates a high-intensity laser beam onto the metal surface. Through the interaction of the laser and the metal, the metal absorbs the laser light and converts it into heat, melting the metal to form a cooling crystal. Laser welding machine is the most advanced laser welding equipment for finned tubes. Because the welding process is fully automatic and mechanical, the scientific and technological content and quality of laser welding finned tubes are superior to traditional cooling tubes. The laser welding finned tube has a fully automatic welding process, saving manpower costs; secondly, the laser welding fin is firm, strong, and the test with high tensile strength is qualified. Laser welding is more efficient. Advantages of laser welding finned tube 1. The laser welding finned tube (finned tube) fin machine has a high degree of automation, and the welding of the fin to t

What is fin tube? A fin tube is a tube that has small fins around the outside surface. These fins act as a filter and a mechanism to transfer heat from the material inside the tube to the outside space or vice versa. Fin tubes are used in applications that require a transfer of heat from a hot fluid to a colder fluid through the tube’s wall. The rate at which such heat transfer occurs depends on three factors: The temperature difference between the two fluids. The heat transfer coefficient between each of the fluids and the tube wall. The surface area to which the fluid is exposed. In the case of a bare (unfinned) tubes, where the outside surface area is not significantly greater than the inside surface area, the fluid with the lowest heat transfer coefficient will dictate the overall heat transfer rate. When the heat transfer coefficient of the fluid inside the tube is several times larger than that of fluid outside the tube (for example steam inside and oil outside), t