Aluminum Finned Tubes

Aluminum L-Foot Tension Wound Finned Tubes are an economical solution for applications requiring greater resistance to vibration and heat cycling typical of air cooled heat exchangers. The L-Foot design mechanically locks the fins and provides broader contact surface between tube and fin.

This structural design enables L-Foot Tension Wound Finned Tubes to maintain stable performance in environments with temperatures up to 300°F (approximately 149°C), while providing excellent vibration resistance characteristics.

Application Scenarios

L-Foot Tension Wound Finned Tubes are widely used in:

• Air cooled heat exchangers
• Process heaters
• Heat recovery systems
• HVAC systems

Performance Advantages

Compared to traditional finned tubes, L-Foot design provides:

• Enhanced vibration resistance
• Better thermal cycling tolerance
• Optimized tube-fin contact area
• Cost-effective solution

Edge Tension Wound Finned Tubes offer a low cost solution for low to moderate temperature applications. The surface of the tube is knurled as the fin is wound tightly on edge around the O.D. of a tube to ensure proper fin to tube contact.

This finned tube is suitable for applications with small amounts of vibration and metal temperatures up to 250°F (approximately 121°C), making it an ideal choice for many industrial heat exchange systems.

Technical Features

Key advantages of edge tension winding technology:

• Optimized tube-fin contact mechanism
• Surface knurling enhances bond strength
• Suitable for medium temperature environments
• Significant cost benefits

Suitable Industries

This finned tube type is particularly suitable for:

• HVAC systems
• Industrial coolers
• Heat pump systems
• Process cooling applications

Embedded Fin Tubes offer solutions where higher temperatures, continuous thermal cycling and tube vibration due to high velocity air streams can cause failures. The fin is mechanically embedded into a groove that is plowed in the tube O.D. and is locked into place by rolls that force the groove to tightly close around the fin base.

This design provides excellent mechanical strength and heat transfer performance, particularly suitable for long-term stable operation under harsh conditions.

Design Advantages

Key performance provided by embedded structure:

• Exceptional vibration resistance
• Excellent thermal cycling tolerance
• Optimized heat conduction path
• Long-term operational stability

Application Areas

Embedded finned tubes are particularly suitable for:

• High temperature process heat exchangers
• Power plant air preheaters
• Chemical process equipment
• High vibration environment applications

Extruded Finned Tubes provide the greatest resistance to atmospheric corrosion. The aluminum fin material completely encloses the tube, except at the ends where a tube coating can be applied. Where atmospheric corrosion is present and when operated within design temperature limits, extruded finned tubes provide the most stable performance over time as compared to the other fin types.

The fin is rolled from an outer aluminum tube by a process using pressure to create a rolled "pressure bond" between the liner tube and fins.

Performance Characteristics

Unique advantages brought by extrusion process:

• Exceptional corrosion resistance
• High temperature environment stability
• Integrated structural design
• Long-term performance consistency

Suitable Environments

Extruded finned tubes are particularly suitable for:

• Marine environment applications
• Chemical corrosion environments
• High temperature exhaust gas treatment
• Long-term outdoor applications

Perforated Finned Tubes maximize heat transfer by increasing the air flow across the finned area of the tube. Uniform perforations are created in the fin as it passes through the machine. These perforations are arranged like spokes of a wheel and can be manufactured in Embedded and L-Foot fin configurations.

This design significantly improves heat exchange efficiency by enhancing airflow turbulence and increasing effective heat exchange area.

Technical Advantages

Key performance improvements from perforated design:

• Enhanced heat transfer efficiency
• Optimized airflow distribution
• Reduced air-side pressure drop
• Versatile material options

Application Scenarios

Perforated finned tubes are particularly suitable for:

• Systems requiring high heat exchange efficiency
• Space-constrained applications
• Air coolers
• Compact heat exchanger designs