縦方向フィン付きチューブ

Product introduction:

As with welded spiral finned tubes, this welded structure can be used for virtually any heat transfer application.

The choice between longitudinal finned tube and spiral finned tube seems to depend mainly on geometric factors. 例えば, some heater structures consist of finned tubes inserted into other tubes -- longitudinal finned tubes are an obvious choice for such applications. In other cases, users prefer the longitudinal finned tube installation, where the tube will be in a vertical direction - the finned direction facilitates fluid drainage on one side of the finned tube.

Longitudinal finned structures are most commonly used in shell and tube applications, such as in double-tube and multi-tube heat exchangers, where the longitudinal finned tube is telescopic in the hole of a larger tube shell. Heat is transferred between the fluid flowing through the finned tube hole and the fluid flowing through the shell hole.

The fluid flowing through the shell hole is forced to flow between the longitudinal fins. In this case, the spiral fin prevents the flow of the fluid, rather than allowing it to flow between the fins.

積 characteristics:

• Improve heat transfer efficiency in efficient space.
• Reduces installation space on required heat transfer surfaces
• Reduce the cost of the equipment, and have a high operational reliability.
• The pressure drop on the side of the tube is reduced and the operation cost is reduced.
• The stiffness of steel tube is improved, and the seismic performance of steel tube is improved.
• Enhance heat transfer, reduce flow resistance and metal consumption

Manufacturing process

縦方向のフィン付きチューブは、チューブの長さに沿って抵抗のあるフィンを溶接することによって製造されます. フィンは最初にU字型のチャネルを形成します, U字型の脚のそれぞれがフィンを形成できるようにする. チャネルは適切な長さに切断され、チューブと抵抗の長さに沿って所定の位置に溶接されます. チャネルは溶接されたペアです, 正反対, したがって、指定するフィンの数は 4 の倍数でなければなりません.

特定のチューブまたはチューブサイズの場合, チューブ単位長さあたりの所望の熱伝達表面積は、適切なフィン高さとフィン数を指定することによって得ることができます. フィンの最大数は、チューブの外径によって異なります - より大きなODチューブはより多くのフィンを収容することができます.

競争上の優位性:

1. Longer working life than others ordinary welding helical fin tubes.

2. Much safer and energy saving.

3. Increase the heat transfer rates for viscous liquids.

4. Perforated fin type used whenever drainage of liquid from fin channels become a problem.

5. Longitudinal fin tubes are widely used in horizontal heat exchangers.

アプリケーション:

The longitudinal finned tubes are widely used in following fields.

1. ケミカル, 石油 化学, 油, and power industry

2. Heat exchanges

3. Fired heaters

4. Gas coolers and heaters

5. Tank heaters.