L-type Spiral Wound Finned Tube ASTM A249 TP304 with AL1100 Fins For Coolers

What is L type Spiral Wound Finned Tube?

L-type spiral wound finned tube is a type of heat exchanger tube that has a continuous helical fin wound around the outside surface of the tube. The fins on the tube are tightly serrated, and they are wound in a continuous spiral, creating a helical configuration. The L-type fin has a rectangular shape, and its height is greater than that of the base metal or tube diameter. The L-type spiral wound finned tube presents a more extended surface area for thermal transfer and is effective for heat recovery applications.

The 'L' in L-type spiral wound finned tube denotes that the fins protrude from the tube surface in an L-shaped pattern when viewed from the end. This ensures better turbulence on the fin's surface, which results in improved heat transfer efficiency. The L-type spiral wound finned tube has a high heat transfer rate, and it is widely used in heat exchangers, air coolers, boilers, and other applications that require efficient heat transfer.

What's the advantage of L-type Spiral Wound Finned Tube?

The advantages of L-type spiral wound finned tubes are:

1. Increased Heat Transfer: The primary advantage of spiral wound finned tubes is increased heat transfer efficiency. The finned tubes provide up to 8 times greater heat transfer than plain tubes.

2. More Compact Design: The compact design of the spiral wound finned tube allows for maximum heat transfer in a smaller footprint. This is particularly useful in applications with space constraints.

3. Higher Efficiency: The unique design of the spiral wound finned tube enhances the heat transfer efficiency compared to other types of heat exchanger tubes.

4. Longer Life: The tight bond between the fin and the tube surface provides a more robust, longer-lasting finned tube.

5. Versatility: The spiral wound finned tubes can be customized by adjusting the geometry of the fins, the pitch, the thickness, and the material to meet specific performance requirements.

6. Reduced Fouling: The spiral wound finned tube has reduced deposit formation compared to bare tubes. This helps to reduce maintenance needs and improve performance over a longer period.

7. More Cost-Effective: The use of spiral wound finned tubes, compared to other heat exchangers, reduces manufacturing costs and initial installation costs while also providing energy savings over time.

What's the Chemical Compostion and Mechanical properties of ASTM A249 TP304?

Chemical Composition:

- Carbon (C): 0.08%

- Manganese (Mn): 2.00%

- Phosphorus (P): 0.045%

- Sulfur (S): 0.03%

- Silicon (Si): 1.00%

- Chromium (Cr): 18.0-20.0%

- Nickel (Ni): 8.0-11.0%

Mechanical Properties:

- Tensile Strength (min): 515 Mpa

- Yield Strength (min): 205 Mpa

- Elongation (min): 35%

- Hardness (max): HRB 90 / HB 187

The overall properties of ASTM A249 TP304 make it an excellent material for high-temperature and high-pressure applications due to its strength, corrosion resistance, and ability to withstand harsh environments.

What's the main application of L-type spiral wound finned tubes?

L-type spiral wound finned tubes are widely used in various industrial applications, including:

1. Heat Exchangers: L-type spiral wound finned tubes are commonly used in heat exchangers where high heat transfer rates are necessary.

2. Air Cooler Systems: L-type spiral wound finned tubes can be used in air cooler systems for cooling the air and preventing excessive heat buildup.

3. Fluidized Bed Combustion Systems: L-type spiral wound finned tubes can be used in fluidized bed combustion systems for recovering waste heat and ensuring optimal performance.

4. Boilers: L-type spiral wound finned tubes can be used in boilers to increase heat transfer efficiency and reduce fouling.

5. Waste Heat Recovery Systems: L-type spiral wound finned tubes are used in waste heat recovery systems that convert waste heat from industrial processes into useful energy which is beneficial to the environment.

6. Gas Turbine Exhaust Systems: L-type spiral wound finned tubes are used for the exhaust system of gas turbines, where high heat transfer rates are required for optimum performance.

7. Refinery and Petrochemical Industries: L-type spiral wound finned tubes are used in refineries and petrochemical industries for heat transfer applications where resistance to aggressive fluids and gases is critical.

8. Chemical Processing: L-type spiral wound finned tubes are used in chemical processing applications where high heat transfer rates are crucial and chemical resistance is required.