Laser welded finned tubes are used in civil wall-hung furnaces, industrial boilers, etc. They have good corrosion resistance, scouring resistance and wear resistance, as well as good strength and stiffness and plasticity, and be easy to process and manufacture.

What parameters in the analysis of laser welded finned tubes have an impact on heat dissipation?

1.Contact thermal resistance. Its influence is big, if the contact thermal resistance is not good, then the influence on the heat dissipation will reach 20%.

2.Fin height. If the height of the fins increases, then it will increase the heat dissipation area, thus increasing the heat dissipation. However, this should not be increased blindly, but also consider the dimensional reasonableness of this aspect.

3.Fin spacing. A smaller fin spacing will increase the heat dissipation, but not the smaller the better, the spacing is too small but will bring bad effects. Two tubes are 3-4mm, four tubes are 4-5mm and six tubes are 5-6mm.

4.Fin tube diameter. Fin tube diameter increases, then the heat dissipation will increase, but its also has some drawbacks. If the fin height is relatively small and the distance between the fins is relatively small, then the diameter of the tube should also be considered reasonable in this respect.

5.Number of fins. Increasing the number of fins can increase the heat dissipation, but it will increase the cost and so on, so from the economic aspect to consider, it is not very economic.