L/LL/KL Finned Tubes: Optimal Solutions for Heat Exchange in Varied Conditions
Product Overview
The L/LL/KL Finned Tubes are engineered to enhance heat transfer efficiency through innovative design and material application. These finned tubes cater to various temperature and corrosion resistance requirements, offering optimal solutions across industries.
KL Finned Tube (Knurled Aluminum Tubing)
KL finned tubes are manufactured similar to L-Type tubes but with knurled surfaces on the base tube. This knurling enhances the bond between the tube and fins, resulting in excellent heat transfer performance. These tubes withstand temperatures up to 260°C, making them suitable for medium-temperature applications.
- Fin Materials: Aluminum and Copper
- Base Tube Materials: Unlimited options
L Finned Tube
L finned tubes feature a fin strip shaped in an L form and tension wound around the tube's outer surface. The L-shape offers enhanced corrosion protection. It’s an economical choice for low-temperature applications, supporting temperatures up to 150°C.
- Fin Materials: Aluminum and Copper
- Base Tube Materials: Unlimited options
LL Finned Tube
Similar to L-Type tubes, the LL variant includes an overlapping fin foot, providing better corrosion protection. These tubes operate at temperatures up to 180°C, offering increased durability in corrosive environments.
- Fin Materials: Aluminum and Copper
- Base Tube Materials: Unlimited options
Advantages of L/LL/KL Finned Tubes
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L Finned Tube: Ideal for low-temperature applications; cost-effective; allows for the easy removal and reuse of failed fins; compatible with thin-walled tubes without the need for helical grooves; corrosion-resistant up to 130°C.
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LL Finned Tube: A cost-effective alternative to extruded fins in corrosive environments with a maximum operating temperature of 170°C.
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KL Finned Tube: Offers corrosion and vibration resistance, withstanding temperatures up to 320°C. Provides high thermal performance with air corrosion protection.
Properties
- Atmospheric Corrosion Resistance: Satisfactory
- Mechanical Resistance: Limited
- Fin Contact: Interference Fit
- Fin to Tube Bond: Moderate
- Heat Transfer Efficiency: Moderate
Applications
L/LL/KL finned tubes find extensive use across multiple industries, including:
- Petroleum, chemical, and petrochemical processing
- Natural gas treatment
- Steel industry applications
- Power generation, including steam turbine exhaust condensing
- Air conditioning systems using Freon, ammonia, and propane
Specifications
- Tube Outer Diameter (OD): 19 to 51 mm (3/8” to 2”)
- Tube Wall Thickness: 1.65 to 3.0 mm (0.065” to 0.118”)
- Tube Length: Up to 18,500 mm (60.7 ft)
- Fin Thickness: 0.3 to 0.5 mm (0.012” to 0.02”)
- Fin Height: 10 to 16 mm (0.394” to 0.63”)
- Fin Pitch: 100 to 433 FPM (3 to 11 FPI)
L/LL/KL Finned Tubes are versatile solutions designed to accommodate diverse thermal, corrosion, and mechanical requirements. Their application in various industrial processes ensures improved efficiency, cost-effectiveness, and reliability under specific environmental and temperature conditions.
