ASME SA210 Gr.C Serrated Finned Tube with Carbon Steel Fins For Power Plant Boilers

ASME SA210 Gr.C Serrated Finned Tube with Carbon Steel Fins For Power Plant Boilers

An ASME SA210 Gr.C Serrated Finned Tube with Carbon Steel Fins is a high-performance heat exchanger tube designed for maximum heat transfer efficiency in demanding industrial applications, typically in boilers and heaters. It is a robust, code-compliant, high-efficiency heat transfer component designed for reliable performance in demanding high-temperature gas applications, most notably in the power generation sector.

Here is a detailed breakdown of each component:

1. Base Tube: ASME SA210 GR.C Seamless Tubes

(1). Chemical Composition (Heat Analysis, %)

The composition is critical for ensuring weldability, strength, and high-temperature performance.

(2). Mechanical Properties (at Room Temperature)

These are the minimum guaranteed properties for the finished tube.

2. Serrated Finned Tube

Serrated Fins: This is a specific, high-efficiency design. The fins are not smooth; they have small, regular cuts or grooves along their height, creating a "serrated" edge.

Advantages of Serrated Finned Tube:

• Disrupts Boundary Layer: It breaks up the laminar gas flow layer on the fin surface, promoting turbulence.
• Enhanced Heat Transfer: This turbulence significantly improves the heat transfer coefficient compared to smooth fins.
• Reduced Fouling: The turbulence can also help shed ash and soot, reducing fouling in dirty gas environments (like coal-fired boilers).

3. Carbon Steel Fins

Why Carbon Steel? It provides a good balance of cost, manufacturability (easy to weld or tension-wrap onto the tube), and durability for many industrial applications. The fins are typically made from a strip of steel that is helically wound and securely attached to the tube.

4. Advantages of This Specific Combination ASME SA210 Gr.C base tube+ Carbon Steel Fins :

• High Efficiency: The serrated fin design offers superior heat transfer per unit length.
• Code Compliance: The base tube meets the rigorous ASME Boiler and Pressure Vessel Code, ensuring safety and reliability in pressurized applications.
• Robust & Durable: The all-carbon steel construction is suitable for high-temperature and abrasive environments.
• Cost-Effective: Carbon steel is more economical than stainless or alloy steels, making it a standard choice where corrosion is not the primary concern.

Primary Application:

1. Power Generation & Boiler Plants

• Boiler Economizers:
  • Function: Preheats the boiler feedwater using waste heat from the flue gas exiting the boiler. This significantly improves plant efficiency by reducing fuel consumption.

2.Heat Recovery Steam Generators (HRSGs) in Combined Cycle Plants:

• Function: Captures waste heat from gas turbine exhaust to produce steam for a secondary steam turbine

3. Air Preheaters (Regenerative or Recuperative Types):

• Function: Preheats combustion air using the residual heat from flue gas before it goes up the stack, further boosting efficiency.

Major Industrial Applications

4.Waste Heat Recovery Units (WHRUs) & Process Heaters:

• Industries: Petrochemical, Chemical, Refining, Cement, Metallurgical.
  • Function: Recovers heat from industrial process streams (e.g., furnace exhaust, reactor effluent, kiln gases) to generate steam or preheat process fluids.

5. Biomass/Waste-to-Energy Boilers:

• Function: Used in the convective sections of boilers burning fuels with high fouling potential (biomass, municipal solid waste).
  • Why it's used here: The serrated fin design is particularly advantageous here. The grooves create turbulence that not only enhances heat transfer but also reduces the tendency for ash and sticky deposits to adhere, making sootblowing more effective.