Copper Nickel 90/10 Elliptical Fin Tubes are applicated in a Power Station and used as generator coolers. Copper Nickel 90/10 elliptical fin tubes are commonly used in applications requiring high resistance to seawater corrosion and good thermal conductivity. The 90/10 alloy consists of 90% copper and 10% nickel, which enhances its resistance to stress corrosion cracking and erosion, making it ideal for marine environments and heat exchanger applications.

Copper Nickel 90/10 Elliptical Fin Tubes Properties:

(1) When compared to the round tube finned tube, the Elliptical Finned Tube allows for a more compact arrangement, which reduces the overall volume of the Heat Exchanger and thus the footprint.

(2) Because of the Elliptical Finned Tubes shape characteristics, the airside resistance is low, and the heat transfer coefficient between the fluids increases; the thermal resistance in the tube is low, which increases the heat transfer of the fluid in the tube.

(3) Because the heat transfer periphery of the elliptical tube is relatively long under the same crosssectional area, the heat transfer area of the Elliptical Finned Tube is larger than that of the circular tube of the same crosssectional area.

(4) Rectangular steel fins are the most commonly used in Elliptical Finned Tubes, which have high strength and are resistant to frost cracking in the winter and have a long service life.

(5) Because the Elliptical Finned Tube can be more compactly arranged, the front row tube has a greater impact on the back row. The rear row tubes fin spacing can be increased to reduce flow resistance outside the tube, but the number of tube rows should not be excessive.

Copper Nickel 90/10 Elliptical Fin Tubes Description:

Elliptical Fin Tube is a base tube that is an elliptical seamless copper nickel 90/10 that uses aluminum fin strips or copper fin strips to spirally and tightly wrap around the outer surface of the base tube under tension. Elliptical Finned Tube is a heat exchanger made up of a base tube, an elliptical tube, and outer fins.

Copper Nickel 90/10 Elliptical Fin Tubes are gaining popularity due to its superior performance over round finned tubes, and it has been widely used in ethylene, oil refining, and other industrial fields. Elliptical Finned Tube is a highefficiency heat exchange element used in heat exchange equipment. Because the flow resistance outside the tube is low and the heat exchange efficiency is high, heat exchange equipment tends to be small.

Copper Nickel 90/10 Elliptical Fin Tubes Manufacturing Process:

1. Base Tube Preparation:

Material Selection: Choose elliptical Copper Nickel 90/10 (C70600) seamless base tubes for their excellent corrosion resistance and thermal conductivity.

Seamless Tube Formation: Use seamless tube forming techniques to create the elliptical base tubes, ensuring precise and consistent dimensions.

Tube Cleaning: Thoroughly clean the base tubes to remove any impurities, oil, or oxides, ensuring good adhesion between the fins and base tubes.

2. Fin Material Preparation:

Fin Material: Typically, aluminum or copper fins are used. Aluminum fins offer good thermal conductivity and light weight, while copper fins provide superior heat transfer and corrosion resistance.

Fin Stamping: Stamp the fin material into the desired shape and size, including a central hole for fitting onto the base tubes. The fins can be rectangular or square to increase the heat transfer surface area.

3. Fin Stringing:

Fin Arrangement: Arrange the stamped fins according to the design spacing and density.

Fin Stringing: Sequentially string the fins onto the elliptical base tubes. Ensure close contact between the fins and base tubes during the stringing process for optimal heat transfer performance.

Securing Fins: Secure the fins in place using appropriate methods to prevent loosening during use. Common methods include mechanical securing or expansion techniques.

4. Expansion Process:

Internal Expansion: Insert an expanding tool inside the base tube. Using mechanical or hydraulic methods, expand the tool to enlarge the base tube, creating a tight mechanical bond between the fins and the tube.

External Securing: If necessary, use external securing rings or clamps to further secure the fins.

5. Quality Control:

Visual Inspection: Inspect the overall appearance of the finned tubes to ensure there are no damages or inconsistencies.

Dimensional Check: Verify the dimensions of the base tubes, fin spacing, and fin height to ensure they meet the design specifications.

Performance Testing: Conduct tests to evaluate the thermal performance, mechanical strength, and corrosion resistance of the finned tubes.

Copper Nickel 90/10 Elliptical Fin Tubes Applications:

Marine Heat Exchangers: Suitable for seawater cooling systems and marine heat exchangers due to excellent seawater corrosion resistance.

Offshore Platforms: Ideal for heat exchangers in offshore oil and gas platforms with high seawater corrosion resistance requirements.

Power Plants: Used in various cooling and heating applications in power plants for efficient heat transfer.

Chemical Processing: Suitable for heat exchangers in chemical processing industries where high corrosion resistance is crucial.

Copper Nickel 90/10 Elliptical Fin Tubes Advantages:

Superior Heat Transfer Performance: Close contact between the fins and base tubes enhances heat transfer efficiency.

Corrosion Resistance: Copper Nickel 90/10 alloy offers excellent resistance to seawater and chemical corrosion, ensuring long service life.

Mechanical Strength: The expansion process ensures secure attachment of the fins, providing durability and mechanical strength.

Customization: The manufacturing process allows customization of fin spacing, fin height, and tube dimensions to meet specific application needs.

Elliptical Fin Tubes