|
| Nazwa marki: | YUHONG |
| MOQ: | 200-500 kg |
| Ceny: | negocjowalne |
| Warunki płatności: | L/C, T/T, na widoku |
| Umiejętność dostaw: | Zgodnie z wymaganiami klientów |
The ASTM A210 A1 embedded fin tube with aluminum fins is a highly effective and cost-efficient heat exchange solution designed for moderate-temperature air-cooling systems. Known for its excellent thermal performance and affordability, this heat exchanger tube is ideal for applications in industries where air-side heat transfer efficiency is crucial.
The tube is crafted from ASTM A210 Grade A1, a seamless medium-carbon steel, renowned for its strength, durability, and ability to withstand temperatures up to 450°C (850°F). This material is commonly used in boilers and superheaters, offering a robust balance between mechanical strength and cost-effectiveness.
The standout feature of the ASTM A210 A1 finned tube is the aluminum fins embedded into the steel tube. Using advanced mechanical grooving and rolling techniques, the fins are securely attached to the tube, forming a strong mechanical bond that minimizes thermal resistance and ensures maximum heat dissipation. Aluminum fins (typically grade 1060 or similar) are chosen for their superior thermal conductivity (~237 W/m·K), lightweight nature, and excellent corrosion resistance.
• Enhanced Thermal Conductivity: The aluminum fins significantly increase heat transfer efficiency compared to standard finned tubes, allowing for more compact heat exchanger designs.
• Lightweight Design: Aluminum fins reduce the overall weight of the heat exchanger, improving handling, installation, and transport logistics.
• Corrosion Resistance: Aluminum provides excellent protection against corrosion, particularly in mild environmental conditions, making the tube suitable for air-cooled heat exchangers in various industrial applications.
• Cost-Effective Performance: By using aluminum fins and medium-carbon steel as the base tube material, the assembly offers an excellent balance between performance and cost, making it an economical choice for air-cooling systems.
|
Element |
C |
Mn |
P (max) |
S (max) |
Si (min) |
|
Range |
0.13-0.19 |
0.27-0.63 |
0.035 |
0.035 |
0.10 |
|
Tensile Strength |
Yield Strength |
Elongation |
|
≥ 415 MPa (60 ksi) |
≥ 255 MPa (37 ksi) |
≥ 30% |
1.ASTM A210 A1 vs. ASME SA179
• Temperature & Strength: The A210 A1 tube is stronger and can withstand higher temperatures and pressures than the ASME SA179 tube, which is a lower-strength, low-carbon steel material typically used for condenser tubes.
• Application Focus: A210 A1 is preferred in higher-pressure and moderate-temperature applications such as boilers and heat exchangers, while SA179 is ideal for low-pressure applications where corrosion resistance is the main concern.
2.Aluminum Fins vs. Welded Steel Fins
• Thermal Performance: Aluminum fins outperform steel fins in terms of heat transfer, with thermal conductivity about 5 times greater than steel.
• Weight & Cost: Aluminum fins reduce the total weight of the heat exchanger by approximately 65%, while also lowering material costs compared to steel fins.
• Temperature Limitation: Aluminum fins are limited to 250°C (480°F) due to their lower melting point, whereas steel fins can handle temperatures up to 400°C (750°F).
• Air-Cooled Heat Exchangers (ACHEs): Used in power plants, refineries, petrochemical facilities, and industrial air-cooled systems.
• Compressor Systems: Efficient heat rejection for air compressors in intercoolers and aftercoolers.
• Engine Cooling Systems: Radiators and charge air coolers in engines for stationary power generation sets.
• HVAC&R Systems: Condenser coils in commercial HVAC and refrigeration units.
• Industrial Process Cooling: Air-cooled condensers and fluid coolers in various manufacturing sectors.
Q1: What are the primary benefits of using aluminum fins in a carbon steel tube?
The main advantages are improved heat transfer efficiency, reduced weight, and lower material costs. Aluminum's high thermal conductivity enables better heat dissipation, while its lightweight nature reduces the structural load of the heat exchanger.
Q2: What is the maximum operating temperature for this tube assembly?
The maximum operating temperature for the ASTM A210 A1 finned tube is typically limited to 200-250°C (400-480°F) at the fin base. This is to prevent the aluminum fins from softening and to maintain the integrity of the bond between the aluminum fins and the steel tube.
Q3: How can the aluminum fins be protected from corrosion?
To protect the aluminum fins from corrosion, especially in outdoor or aggressive environments, several methods can be used:
Protective coatings such as baked phenolic or epoxy.
Anodizing the aluminum fins for enhanced corrosion resistance.
Implementing environmental controls to minimize exposure to corrosive elements.
Q4: How does the ASTM A210 A1 with aluminum fins compare to all-aluminum finned tubes?
While all-aluminum finned tubes offer better thermal performance and eliminate galvanic corrosion concerns, the A210 A1 aluminum fin tube offers superior pressure containment due to the carbon steel base tube. It is a more cost-effective solution, making it ideal for moderate-pressure applications where high strength is needed without the added expense of full aluminum construction.
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