Serrated Finned Tubes ASTM A192 Carbon Steel For Power Plant Boilers
ASTM A192 / ASME SA192 specification covers seamless carbon steel boiler and superheater tubes for highpressure service, the wall thickness is minimum.
Chemical Composition (%)
| Grade | C | Mn | P | S | Si |
| A192 | 0.06-0.18 | 0.27-0.63 | 0.035 | 0.035 | 0.25 |
Mechanical Properties
| Grade | Tensile Strength,min | Yield Strength (0.2%Offset,min) |
| 47ksi (325 MPa) | 26ksi (180 MPa) |
| A192 | Elongation min. % | Hardness |
| 35% | 137 HB, 77HRB |
As the same with other types finned tubes, serrated finned tubes are also a type for extending surface heat exchanger tube designed to significantly improve heat transfer efficiency.
Fins of serrated finned tubes can be in various shapes, such as U-shaped or V-shaped, which help in disrupting the boundary layer and promoting turbulent flow, thereby enhancing heat transfer efficiency, required by clients.
The choice of finned tubes' material depends on the specific application requirements, such as corrosion resistance, thermal conductivity, and mechanical strength.Its' bare tube and fin materials may be carbon, stainless steel, copper, ferritic alloy or austenitic alloy steel and can be of similar or dissimilar material combinations.
Advantages
| 1.Serrated spiral finned tubes are important parts to enhance the efficiency of heat transfer, the combination of serrated fins and spiral configurations maximizes heat transfer while maintaining structural integrity. |
| 2.Depending on the material used, serrated finned tubes can offer good resistance to corrosion, making them suitable for harsh environments. |
| 3.Reduced fouling,the turbulent flow and serrations help shed ash and particulate matter, reducing the buildup of deposits (fouling). Deposits can insulate the tube and reduce efficiency over time. This is a major advantage in flue gas applications. |
| 4.They provide an excellent balance between heat transfer enhancement and the resulting pressure drop on the gas side. |
| 5.Economical and practical. |
Application
*Power Plant Boilers (Economizers)
*Air Heaters and Process Gas Heaters
*Heat Recovery Steam Generators (HRSGs) and Waste Heat Boilers
* Other Industrial Applications
Totally, as the same with other finned tubes, serrated finned tubes are used in various industries where efficient heat transfer is crucial. Serrated finned tubes are particularly useful in environments with high temperatures and corrosive atmospheres, usually used in boilers, heat exchangers, air preheaters, and waste heat recovery systems.
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