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What is LL-Foot Fin Tube?

LL-Foot Fin Tube, also known as Overlapped L-type fin tube, is a type of finned tube commonly used in heat exchangers. It consists of a base tube and fins that are formed by overlapping L-shaped strips onto the tube surface. The L-shaped fins are attached to the tube in a way that creates an "LL" pattern, hence the name LL-Foot Fin Tube.

How to produce LL-Foot Fin Tube?

The production process of LL-Foot Fin Tubes involves the following steps:

1. Preparation: Start with a base tube, typically made of materials such as copper, stainless steel, or carbon steel. The tube is cut to the desired length and prepared for the finning process.

2. Finning: L-shaped fin strips are formed separately and then overlapped onto the base tube. The fins are usually made from a different material, such as aluminum or copper, to enhance heat transfer efficiency.

3. Bonding: The fin strips are bonded to the tube using various methods, including mechanical bonding, soldering, or brazing. The bonding process ensures a strong and durable attachment between the fins and the tube.

Advantages of LL-Foot Fin Tube – Overlapped L-type fin tube:

1. Enhanced heat transfer: The L-shaped fins increase the surface area of the tube, which improves heat transfer efficiency. This allows for more effective heat exchange between the fluid inside the tube and the surrounding environment.

2. Compact design: LL-Foot Fin Tubes provide a higher heat transfer rate compared to smooth tubes, allowing for a more compact heat exchanger design. This is particularly beneficial in applications where space is limited.

3. Reduced fouling: The finned surface of LL-Foot Fin Tubes reduces the likelihood of fouling, such as the deposition of scale or sediment, which can negatively impact heat transfer performance. The fins create a turbulent flow regime that helps prevent fouling.

LL-Foot Fin Tube – Overlapped L-Type Fin tube Typical Size:

Base Tube O.D

mm

Base Tube Thickness (mm)

Fin Height

mm

Fin Thicknessmm

Fin Pitchmm

15.88 ~50.8

1.0 ~3.0

6.35 ~ 25.4

0.3 ~0.5

2.1~ 6.0

Base Tube Material

Fin Material

Tube Length (Mtr)

Carbon Steel ,Alloy Steel ,Stainless Steel

Aluminum, Carbon Steel

15Mtrs

Usages of LL-Foot Fin Tube – Overlapped L-type fin tube:

LL-Foot Fin Tubes are commonly used in various heat transfer applications, including:

1. Air conditioning and refrigeration: LL-Foot Fin Tubes are utilized in air conditioning systems, both for cooling and heating applications. They are also found in refrigeration systems, such as refrigeration coils.

2. Heat exchangers: LL-Foot Fin Tubes are extensively used in heat exchangers, particularly in applications where efficient heat transfer is crucial. They are employed in industries like power generation, chemical processing, oil and gas, and HVAC (Heating, Ventilation, and Air Conditioning).

3. Radiators: LL-Foot Fin Tubes are employed in automotive radiators to facilitate efficient cooling of the engine coolant. The fins help dissipate heat more effectively, preventing the engine from overheating.

Overall, LL-Foot Fin Tube – Overlapped L-type fin tube offers improved heat transfer performance, compact design options, and reduced fouling, making it a popular choice in various heat exchange applications.

LL Finned Tube , Overlapped L Type Fin Tube

LL Finned Tube , Overlapped L Type Fin Tube

 In order to forward you a promt offer we would be pleased to receive you detailed enquiry including:

• Base tube material 
• Base tube size (OD x WT x Length)
• Fin material
• Fin type
• Fin diameter or height
• Fin thickness
• Fins per inch, meter or fin pitch
• Lenght of plain, unfinned ends
• Finned Tube Quantity

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