The structural design of the crystal box finned tube is ingenious. The following introduces the core component composition, material and connection process, fin arrangement and spacing design, and auxiliary component design:
Core component composition: The finned tube is mainly composed of a base tube and fins. The base pipe is usually made of high-quality metal materials such as steel pipes, stainless steel pipes, etc., to ensure good thermal conductivity and mechanical strength. The fins are tightly wrapped around the surface of the base pipe, with various shapes such as spiral, needle, etc., evenly distributed at regular intervals, greatly increasing the heat dissipation area. The fins are tightly connected to the base tube through advanced welding techniques, such as high-frequency welding, ensuring stable heat transfer and reducing thermal resistance.
Material and connection process: There are multiple options for the material of the base tube and fins, such as steel strip, stainless steel strip, etc., to meet the needs of different working environments. The connection methods between fins and base pipes mainly include welding and expansion. The welding method can ensure the tightness of the connection between the fins and the base tube, allowing heat to be transferred from the base tube to the fins; Expansion joint is the use of mechanical force to tighten the fins onto the base tube. This method is relatively simple and cost-effective, but the connection strength may be slightly inferior to welding.
Fin arrangement and spacing design: The arrangement of finned tubes can be arranged in two ways: straight and fork. When arranged in sequence, the disturbance to the flow around the fluid tube is small, the heat transfer coefficient is low, but the resistance is low; When arranged in a forked manner, the flow around the fluid tube is greatly disturbed, resulting in a higher heat transfer coefficient but greater resistance. When there are no strict restrictions on resistance reduction, fork arrangement should be preferred; When the required resistance drop is very small, a sequential arrangement plan should be selected. In addition, the size of the pipe spacing also has a significant impact on heat transfer and resistance, which is usually represented by relative values and optimized according to actual conditions.
Auxiliary component design: Finned tube heat exchangers may also include auxiliary components such as tube boxes (headers) or tube plates, frames, etc. Tube box is used to connect the box body at both ends of the finned tube, forming a continuous flow channel for the fluid inside the tube; The framework is used to support and fix the entire finned tube bundle, ensuring its stable operation.