Copper aluminum composite finned tubes
Copper aluminum composite finned tubes supplier
China Copper aluminum composite finned tubes Manufacturer
We specialize in manufacturing a wide range of copper aluminum composite finned tube. Our products are designed for various heat exchanger applications, such as condensers, evaporators, boilers, and chillers, ensuring efficient heat transfer and durability in demanding industries like HVAC, energy, and petrochemicals.
Technical Specification:
Outer Diameter (OD): 16mm Min ~ 50.8mm, max 10-57mm.
Tube Wall Thickness: 1.0mm-4.0mm. 1.65~3.0 mm
Tube Length: Up to 18,000 mm. ≤18,500 mm
Fin Height: Less than 18mm. 16.5mm max. 5~16 mm
Fin Thickness: Generally 0.4mm ~ 0.6mm. 0.2~1mm. 0.3~1.2 mm
Copper Aluminum Composite Finned Tubes Parameter
| Code | Plain End | Plain End | Plain End | Finned Section | Finned Section | Finned Section | Finned Section | Nominal (m2/m) | Surface Area Ratio |
|---|---|---|---|---|---|---|---|---|---|
| CTHF | Outside Diameter(mm) | Inside Diameter(mm) | Nominal Wall(mm) | Outside Diameter(mm) | Fin Height (mm) | Min Wall Under Fins(mm) | Fin Per Inch(mm) | Ourside Surface Area | Outside to Inside |
| 39-19-7 | 19 | 16 | 1.5 | 39 | 9 | 1.6 | 7 | 0.535 | 10.64 |
| 45-23-7 | 23 | 19.8 | 1.6 | 45 | 10.5 | 1.7 | 7 | 0.704 | 11.32 |
| 46-25.9-5 | 25.9 | 22.4 | 1.75 | 46 | 9.5 | 1.85 | 5 | 0.535 | 7.6 |
| 47-25.9-7 | 25.9 | 22.4 | 1.75 | 47 | 10.5 | 1.85 | 7 | 0.75 | 10.65 |
| 48-25.4-7 | 25.4 | 22 | 1.7 | 48 | 10.5 | 1.8 | 7 | 0.76 | 11.13 |
What is copper aluminum composite finned tubes?
A copper-aluminum composite finned tube is a heat exchanger component designed to maximize heat transfer efficiency by combining the beneficial properties of both copper and aluminum. These tubes consist of a copper tube (core) with aluminum fins attached to the outer surface.
Advantages Of Copper Aluminum Composite Finned Tube?
- Heat Transfer Efficiency: They maximize the contact area between the fluid or gas being heated or cooled and the surrounding environment. The aluminum fins increase the surface area, facilitating rapid and efficient heat exchange. The copper core provides excellent thermal conductivity.
- Corrosion Resistance: The aluminum layer forms a protective oxide layer, preventing further oxidation and corrosion. They avoid direct contact between steel tubes and air, improving corrosion resistance.
- Lightweight: Aluminum is a lightweight material, making these tubes easy to transport, handle, and install. This can result in cost savings in terms of labor and installation time.
- Ductility and Malleability: Aluminum is a highly ductile and malleable material, allowing for the creation of intricate fin designs, enabling manufacturers to tailor the finned tubes to specific requirements and optimize their performance.
Manufacturing Process Of Copper Aluminum Composite Finned Tubes
1, Tube Preparation: An aluminum outer tube (often referred to as a muff) is aligned over an inner base tube.
2, Finning Process: Both tubes are pushed through mandrels equipped with rotating discs that exert high pressure, extruding the aluminum into fins that spiral outward from the muff. This process creates a strong mechanical bond between the aluminum fins and the inner tube, ensuring excellent thermal conductivity and structural integrity.
3, Fin Configuration: The fins can be designed in various configurations, including serrated or helical shapes, which further enhance heat transfer capabilities by increasing surface area and improving fluid dynamics around the fins.
Applications Of Copper Aluminum Composite Finned Tubes
Copper aluminum composite finned tubes are widely utilized across several industries due to their efficiency in heat exchange and durability. The most common industries that employ these specialized components include:
- Power Generation: Used extensively in electric, nuclear, thermal, and geothermal power plants for heat exchangers.
- Petroleum and Petrochemical: Essential in processes involving oil refining, gas treatment, and chemical production.
- Chemical Processing: Employed in systems such as condensers and evaporators, particularly in high-corrosive environments.
- Food Processing: Utilized in refrigeration and heating applications to ensure safe food handling and processing.
- HVAC Systems: Commonly found in air conditioning units and heat recovery systems to optimize energy use.
- Marine Applications: Suitable for seawater desalination and other offshore operations where corrosion resistance is crucial.
- Industrial Applications: Used in steel mills, incinerators, and gas compression facilities for efficient thermal management.
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Frequently Asked Questions
About Copper Aluminum Composite Finned Tubes For Heat Exchangers
What are the key advantages of using copper-aluminum composite finned tubes?
Copper’s high thermal conductivity combined with the increased surface area of aluminum fins ensures efficient heat exchange. The aluminum layer provides protection against corrosion. Aluminum fins reduce the overall weight of the heat exchanger.
What is the expected lifespan of copper-aluminum composite finned tubes?
These tubes are designed for a long service life due to the combination of corrosion-resistant materials and robust manufacturing processes. They are also not easily deformed under long-term hot and cold working conditions.
Are these tubes easy to maintain and clean?
Yes, the integrally rolled fins are smooth, burr-free, wrinkle-free and easy to clean. The design also facilitates the removal of condensed water, minimizing dust and scale buildup.
How does the manufacturing process affect the performance of these tubes?
Machine extrusion ensures a tight fit between the fin base and the tube’s outer wall, maximizing heat transfer. Copper and aluminum composite tubes are composited and then rolled into fins. The process of bonding the two metals ensures a strong and reliable bond between the two metals.
What is the lead time for ordering copper aluminum composite finned tubes?
The standard lead time for bi-metal fin tubes is 4-5 weeks, depending on the order quantity and customization requirements. For urgent orders, we can arrange expedited production.
Do you provide certificates of quality or compliance for your copper aluminum composite finned tubes?
Yes, we provide full documentation, including material test certificates (MTC), third-party inspection reports, and compliance certificates such as ISO 9001, ASME, and ASTM standards.
Can you design custom copper aluminum composite finned tubes for specific heat exchanger applications?
Absolutely. We specialize in custom designs based on your heat exchanger requirements. Our engineering team will work with you to optimize the design for maximum efficiency and performance.
What is the maximum operating temperature for your copper aluminum composite finned tubes ?
Our copper aluminum composite finned tubes can operate at temperatures up to 300°C, depending on the materials used. For higher temperature applications, we recommend stainless steel or copper-nickel tubes.
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