DELLOK Integral Low Finned Tubes For Heat Exchangers Chilling

^{DELLOK Integral Low Finned Tubes For Heat Exchangers Chilling}

^{About Us}

^{Dellok(YONGHUI Radiating Pipe Manufacturing Co.,Ltd) was established in 2002, which is located in Nanjing, China.We joined HARBIN AIR CONDITIONING CO., LTD. in 2022 and became the most professional industry manufacturer in China. After many years of development, the company now has 66 million yuan in fixed assets, more than 200 employees, and 33 technical staffs. We have 4 aluminum processing production lines, with the annual processing capacity of more than 20,000 tons; And we have 5 tube-drawing production lines; 47 fintube production lines, 1 imported production line from American with the brand of McElroy , with the annual production capacity of 12 million meters the above.}                 

 ^{Product Description}

^{Integral fin tubes were developed to increase the heat transfer performance of fluids while reducing the physical size and cost of the Heat Exchanger. In these tubes the fins are rolled out from the wall of the tubes and hence are integral with the tube. As the fins are formed from the base tube by rolling out material from its wall, the wall thickness under the finned section is reduced compared to the wall thickness at plain ends. These fin tubes can be manufactured from most tubular materials and the hardness of the material usually determines the finning code or fin profile.}

 ^{Manufacturing Process:}

^{The Tube and Fin are in same material. After rolling process, the outer surface of tube is formed with thread, which makes the finned tube have a higher heat transfer capacity.}

^{Integral Low Finned Tube(Copper Finned Tube) Advantages}

^{Low Fin Tube provides 3 times the external surface area of bare tube.}

^{It is helpful for the dropping of the cold condensate at the bottom of the tube, reducing the liquid film and thermal resistance but improving the heat transfer efficiency.}

^{Integral low fin tubing yields numerous benefits for shell and tube heat exchangers including reduced size and cost for new equipment, increased performance of existing equipment. The cost of shell and tube heat exchangers can be reduced up to 50% through the proper application of low fin tubing.}

^{Integral Low Fin TubeApplications:}

^{1.Heating systems;}

^{2.Ventilation systems;}

^{3.Refrigeration and climate control systems;}

^{4.Mechanical engineering;}

^{5.Automotive manufacturing;}

^{6.Chemicals and petrochemical and power plant technology.}

^FAQ

^{1. What is the fin efficiency?}

^{Fin efficiency is defined as the ratio of actual heat flow of the fin to that which would be obtained with a fin of constant temperature uniformly equal to the base surface temperature, that is, one with infinite thermal conductivity.}

^{2. What are low finned tubes?}

^{Low Finned tube is a finned tube obtained through plastic cold deformation. The method consists in realizing, from a smooth tube, fins with a particular geometric form without removing material; this plastic deformation causes an increment of heat exchange efficiency, and allows to reduce the heat exchanger size.}

^{3. How are low fin tubes made?}

^{Low finned tubes involve rotational processing of the outer surface of steel tubes to create a fin shape. A steel pipe length of 25.4 mm (1 inch) per fin and 19 fins is a design often used. We can also produce units with 26 fins.}

^{4. What are advantages of integral low finned tubes?}

^{Provides 2.5 to 3 times the external surface area of bare tube}

^{Reduced capital cost for new equipment}

^{Reduced retrofitting cost for existing equipment}

^{Space, weight & structural savings}

^{More materials & alloys to select}

^{Reduced maintenance & life cycle cost}

^{5. Where are integral low finned tubes used?}

^{Low finned tubes are a reliable solution for controlling the temperature of gases and liquids, or for evaporating and condensing refrigerants. Thanks to their larger heat transfer surface area, they offer considerable potential to save in terms of materials and fill volumes, especially applicable to air and other gases on the fin-side and a fluid on the tube-side. Applied in heat exchanger for oil refinery and petrochemical plants, condenser and heat exchanger for petrochemical plants, condenser & evaporator for power plants.}

^{6. How do you control your quality?}

^{We always put quality as the most important thing for customers, and we control the quality from raw material inspection, production checking to water pressure test and strength test. Also the third party can be authorized to check.}

^{Incoming inspection report for bare tube & strip.}

^{Mill test certification for bare tube}

^{Mill test certification for fin}

^{Mill test certification for finned tube}

^{Finned tubes dimension & visual inspection reports}