Copper Nickel Finned Tube

Shihang Copper Nickel Finned Tube

Shihang copper-nickel finned tube is fabricated out of plain cupro-nickel tubes which conforms to SB-111 UNS no. 71500, 71000, 70600, 70400 and finning will be carried out as per SB-359. Shihang copper-nickel finned tube is made from bare tubes of Cupro Nickel, Copper, and Admiralty Brass with fin material of aluminum and copper.

Shihang copper-nickel finned tube features 90/10 copper-nickel finned tube and 70/30 copper-nickel finned tube. They are available with a plain portion at both ends as per your complete specifications.

The copper-nickel finned tube offers more surface area compared to plain tubes. They increase the heat exchange capacity of the tubes. Shihang copper-nickel finned tube featuring larger heat transfer surface area. Thus, they offer considerable potential to save in terms of fill volumes and materials.

We can manufacture your desire copper-nickel finned tube depending on your specific requirements. We have an extensive range of copper-nickel finned tubes perfect for a broad scope of applications in the air conditioning and refrigeration industry, gas & oil coolers in plant and machinery engineering, and intermediate vapor superheaters in process engineering.

Shihang is experts in most copper-nickel finned tube manufacturing for more than 20 years. Shihang copper-nickel finned tube can be customized according to your specific sizes, dimensions, and lengths.

Shihang is your reliable copper-nickel finned tube manufacturer in China that you can rely on. All of our copper-nickel finned tubes is manufactured for extremely close tolerance for surface finish, hardness, roundness, and straightness.

We are equipped with the skill and necessary know-how for the production of excellent quality copper-nickel finned tubes and can fabricate the same as per your requirements.

Get benefit with our 20 years of copper-nickel finned tube manufacturing. Contact us today!

Copper Nickel Finned Tube: The Complete FAQ Guide

If you want to improve the efficiency of the heat exchanger system, then consider using copper-nickel finned tubes.

They offer high heat conductivity, excellent resistance to salty water, and unmatched durability amongst others.

And, in case you have any questions about copper-nickel finned tubes, you’ll find all answers here.

What is Copper-Nickel Finned Tube?

This is a unique design of copper and nickel alloy tubes, which consists of fins either on its interior or exterior part.

These fins are essential in ensuring there is maximum heat transfer between two fluids.

There use common in the heat exchanger system where heat transfer takes place.

Copper-nickel finned tube

How does Copper Nickel Finned Tubes compare to Plain CuNi Tubes?

The key difference that you can observe between copper-nickel finned tubes and plain CuNi tubes is the fins.

These fins are responsible for the high heat transfer ratio in copper-nickel finned tubes compared to plain cupronickel tubes.

You need to use more plain copper-nickel tubes compared to cupronickel finned tubes for you to get the same amount of heat transfer.

Finned copper-nickel tube

Plain copper-nickel tube

Which Grades of Copper Nickel Finned Tubes are there?

There are two primary grades of copper-nickel finned tubes.

They are:

• Cupronickel 90/10 finned tubes
• Cupronickel 70/30 finned tubes

What are the Benefits of Copper Nickel Finned Tubes?

Using copper-nickel finned tubes offers the following benefits

· Increases the Surface Area of your Application

Fins in these tubes increase the overall surface area of your application.

This enhances the application’s functionality, which saves on time.

· Maximum Heat Transfer

The presence of fins in these tubes ensures there is maximum heat transfer in your application.

This is essential in applications such as heat exchangers whose function is to ensure there is heat transfer from one fluid to another.

· Reduces Cost

Copper-nickel finned tubes maximize the heat transfer.

This, in turn, reduces the overall tubes that you need to have on your application.

When you use a few tubes, you reduce the overall cost of purchasing these tubes for use on your application.

· Reducing the Size of your Equipment

The use of cupronickel finned tubes reduces the overall size of your equipment.

This is due to a reduced number of tubes that you install on your application.

Are there Disadvantages of Copper Nickel Finned Tubes?

Yes. The main limitation to the use of copper-nickel finned tube is the value.

Such value includes the purchasing and maintenance cost, that is expensive.

Also, proper maintenance requires skilled expertise.

In some instances, these kills may not be readily available, thereby limiting the maintenance and operation of the tubes.

Which Designs of Copper Nickel Finned Tubes are there?

Copper-nickel finned tubes have the following designs:

· Longitudinally Copper-nickel Finned Tubes

This type of finned tube is best suited for use where fluid flowing on the outside surface of the tube is parallel to the length of your tube.

The fins can either have a cross-sectional surface that is tapered or flat.

Such shapes maximize the usage of these tubes.

· Transverse Cupronickel Finned Tubes

The use of these tubes is every day in turbulent or gas flow applications.

You can also find them in cross-flow heat and tube exchangers.

They feature hollow metallic discs that have equal spaces along the tube’s length.

· Extruded Cupronickel Finned Tubes

The optimum temperature for extruded cupronickel tubes is 285 degrees Celsius.

The advantage of these tubes is their perfect mechanical resistance that they offer to your heat exchangers.

· “L” Cupronickel Finned Tubes

This type operates perfectly within a temperature of 150°C. they have poor mechanical resistance.

Other designs for cupronickel finned tubes are “LL “cupronickel finned tube, “KL” cupronickel finned tube, and “G” cupronickel finned tube.

What are the Features of Copper Nickel Finned Tubes?

The features of a copper-nickel finned tube facilitate their use in various applications.

These features include:

Copper-nickel finned tube

· High Heat Resistance

Copper-nickel finned tubes have a high heat resistance, which makes them useful in high heat applications.

This is because they don’t deform easily when you subject them to high temperatures.

· High Resistance to Corrosion

You can use these tubes in an application that has a high corrosive effect without damaging their characteristics.

Such applications include salty and corrosive fluids.

· Anti-microbial Effect

The nickel present in a cupronickel finned tube is responsible for the prevention of microbial growth.

This ensures the effective and smooth performance of your tubes.

· Easy to Grove

The ease of grooving cupronickel finned tubes allows for maximum machining.

This means you can groove these tubes to fit the application’s requirements.

What are the Quality Standards of Copper Nickel Finned Tubes?

The primary quality standards for copper-nickel tubes are:

• ISO standards
• ASTM Standards
• EN standards.

Why is Copper-Nickel Finned Tubes suitable for Heat Exchanger System?

Copper-nickel finned tubes are suitable for the heat exchanger system due to their exceptional features.

These features help copper finned tubes to adapt perfectly well in heat exchanger systems.

Such characteristics include; High heat resistance, corrosion resistance, and anti-microbial properties.

These tubes also offer numerous benefits to your heat exchanger system compared to the use of other types of tubes.

For instance, they are easy to fabricate; they reduce the overall number of tubes for use and the size of a particular heat exchanger.

What are the Applications of Copper Nickel Finned Tubes?

Typical applications that you can use copper-nickel finned tubes are:

• Glycol dehydration plants
• Steel industry
• Petroleum industry
• Plastic molding plants
• Food industry
• Printing machines
• Solvent recovery units
• Coils in hybrid cooling towers
• Tanneries
• Textile industry
• Greenhouse breeding and towers

What is the Chemical Composition of Copper Nickel Finned Tubes?

The chemical composition of a copper-nickel finned tube varies depending on its grade.

Common grades include 90/10 and 70/30 cupronickel finned tubes.

The percentage chemical composition for 70/30 cupronickel finned tubes includes 68-70% copper and 28-30% nickel.

88-90% of copper is present in cupronickel 90/10 finned tubes, while 8-10% nickel is present.

How do you Manufacture Copper Nickel Finned Tubes?

The main manufacturing process of copper-nickel finned tubes are:

· Plastic Working Process

The plastic working process entails the use of cold rolling to form bimetallic and monometallic tubes.

There are two types of plastic working processes, that is, grading and depressing methods.

The depressing method involves the use of a tool disk to deform a given tube—the diameter of the tool disk increases along the ribs.

This method uses gradual penetration to achieve the tube’s height.

It is an ideal method if you are considering the manufacturing of low finned cupronickel tubes.

The grading method is suitable for the fabrication of high finned cupronickel tubes.

· Hot Rolling Process

A Hot rolling process entails tape winding and clamping it before having a notched groove within the tube’s base.

The resultant copper-nickel finned tube operates at an optimum temperature of 450 degrees Celsius.

This process has a high accuracy level and low deformation resistance.

It utilizes less energy during the fabrication process.

How do you Choose Copper Nickel Finned Tubes?

The processes of choosing copper-nickel finned tubes are critical in ensuring the proper functioning of your application.

Among the things to consider when selecting the right copper-nickel finned tube include:

· Dimensions

Critical dimensions to consider are the length, wall thickness, and the overall diameter of these tubes.

The aspects ensure the tube fits and operate properly into your application.

· Operating Pressure and Temperature

The operating temperature and pressure of your Copper Nickel finned tube should be within the range of your application.

Also, the right operating pressure reduces the chance of your tube bursting due to fluid flowing through at high pressure.

The correct temperature reduces the expansion effect of your copper-nickel finned tube.

· Quality Standards

The copper-nickel finned tube you select must meet the quality standard available.

This ensures quality service for your tubes while minimizing operational shutdown.

· Heat Transfer Rate

The quantity of pins available in a given cupronickel finned tube determines its heat transfer rate.

This rate is critical when evaluating the efficiency of a given tube.

· End Type Configuration

The end type configuration of a particular cupronickel finned tube is essential when it comes to connecting it to your application.

The compatibility of the connection is vital when you are considering this aspect of your finned tubes.

How do you Connect Copper Nickel Finned Tubes?

 Sections of copper-nickel finned tube

The connection procedure of copper-nickel finned tubes is simple, depending on its end configuration.

There are three ways of connecting these tubes; that is, threaded, plain, or beveled connection.

A threaded connection is simple compared to the other types of connections.

It involves screwing the end of the tube in an anti-clockwise direction into your piping system.

Connecting plain or beveled ends entails welding these joints to obtain a tight connection.

The difference between the types is the angle present in a beveled connection.

How does External Copper Nickel Finned Tube compare to Internal Copper Nickel Finned Tubes?

Internally finned copper-nickel tube

Externally finned copper-nickel tube

The main difference between external and internal copper-nickel finned tubes is the location of the fins.

Externally finned tubes have their fins on the outer surface of these tubes, while internally finned tubes have the fins within the tube’s surface.

External copper-nickel finned tubes have high thermal performance compared to an internal copper-nickel finned tube.

You find their usage in heat exchangers where there is a need for maximum heat exchange.

Inner finned copper-nickel tubes reduce the overall diameter of the tube, which as increasing the pressure flow.

An increased pressure flow is advantageous for maximum heat transfer.

How do you Cut Copper-Nickel Finned Tube?

You can cut copper-nickel finned tubes using standard cutting tools.

However, each of these tools has its limitation and benefits.

Such tools and methods of cutting copper-nickel finned tubes include:

• Abrasive cutting
• Cold sawing
• Band saw cutting
• Lathe cutting

The cutting method you select should consider the fin’s pattern, and the number of fins presents around the cutting area.

What is the difference between Fin Efficiency and Fin Effectiveness in Cupronickel Fin Tubes?

Fin efficiency refers to the ratio between the actual and ideal heat transfer from cupronickel fin when in a base temperature.

The value of a fin efficiency ranges from 0 to 1.

Fin effectiveness is the ratio of heat transfer from a finned tube surface to that of a plain tube surface.

The value of this ratio is usually above 1.

Which Factors Affect the Effectiveness of Copper Nickel Finned Tubes?

The factors that affect the effectiveness of a copper-nickel finned tube are:

· Cross-sectional Arrangement of the Fins

This arrangement can either be inclined radical pin fins, pin fin, and staggered pin fins.

The staggered pin fin arrangement has a high heat performance compared to incline pin fin,

· Pin Dimensions

The dimensions of a given cupronickel finned tube can either be square, circular, elliptic, or lancet. Annular fins have a higher heat performance than the other aspects.

Other dimensions that affect the effectiveness include the length, diameter, void fraction, and aspect ratio.

· Number of Fins

The more the number of fins in a given cupronickel finned tube, the higher the effectiveness.

· Type of Fins Surface Finish

The type of surface finish of your copper-nickel finned tube affects its performance.

For instance, a smooth finish has a lower thermal performance compared to other types of surface finishes.

· Nature of Fluid Flowing Through

Pressurized fluid flow increases the effectiveness of copper-nickel finned tubes compared to the slow-flowing fluid.

This is due to the buoyancy effect present in a slow-flowing fluid, which results in hot air flowing over the finned tube components.

Also, the type of fluid state affects effectiveness.

That is if the fluid is in a gaseous or liquid state.

How do you Measure Fin Tube Radiation in Copper Nickel Finned Tubes?

The proper way of measuring fine tube radiation in cupronickel finned tubes is through the use of an infrared thermo-vision equipment.

This equipment gets the measurements of heat distribution across these tubes.

How Long can Copper Nickel Finned Tubes Last?

The durability of copper-nickel finned tubes is approximately ten years.

However, other factors may affect this durability.

Such factors include the frequency of use and the type of environment the tubes are operating.

Using a cupronickel finned tube frequently reduces their lifespan quickly.

How does Low Finned Copper Nickel Tubes compare to High Finned Copper Nickel Tube?

Low finned cupronickel tubes have few fins on the surface of cupronickel tubes compared to high finned copper-nickel tubes.

The size of the fins is more significant in high finned copper-nickel tubes than in low copper-nickel finned tubes.

High finned copper-nickel tubes have a high efficiency than that of low finned copper-nickel tubes.

At Shihang, we strive to give you the best quality copper-nickel finned tubes for your heat exchanger system.

So, whether you’re looking for standard or custom finned copper-nickel tubes, Shihang is here to help.