Low Finned Tube, ASTM A179 Carbon Steel, for Heat Exchanger in
Refinary Industry
What is Low Finned Tube?
A low finned tube is a type of heat exchanger tube that has
external finning. The fins increase the surface area of the tube,
allowing for increased heat transfer between the tube and the
surrounding fluid or gas. The fins on a low finned tube are smaller
and closer together than on regular finned tubes, which results in
a greater heat transfer coefficient. The low finned tubes are
commonly used in applications where high heat transfer rates are
required, such as in air coolers, refrigeration systems,
condensers, and boilers.
What's the Main Functions or Advantages of Low Finned Tube in ASTM
A179?
1. Increased Heat Transfer: The primary function of low finned
tubes is to increase heat transfer efficiency. The external fins on
the tube increase the surface area, which allows more heat to be
transferred between the tube and the surrounding fluid.
2. Enhanced Performance: Low finned tubes provide improved heat
transfer performance compared to standard bare tubes.
3. Energy-Efficiency: By increasing the heat transfer efficiency,
low finned tubes help to reduce energy consumption and operating
costs in various applications.
4. Reduced Fouling: The external fins on the low finned tube also
help to reduce fouling by preventing build-up of dirt, debris, or
other deposits on the tube surface.
5. Compact Design: Low finned tubes can be designed to achieve the
desired heat transfer performance while still maintaining a compact
footprint compared to bare tubes or other heat transfer solutions,
making them ideal for applications with space constraints.
6. Versatility: Low finned tubes can be manufactured from a variety
of materials, including ASTM A179, to suit specific application
needs and requirements.
What's the Chemical Composition and Mechanical Properties of ASTM
A179?
ASTM A179 have high thermal conductivity, excellent ductility, and
good corrosion resistance.
Chemical Composition:
- Carbon (C): 0.06-0.18%
- Manganese (Mn): 0.27-0.63%
- Phosphorous (P): 0.035% max
- Sulfur (S): 0.035% max
Mechanical Properties:
- Tensile strength: 325 MPa (minimum)
- Yield strength: 180 MPa (minimum)
- Hardness: HRB 72 max
- Elongation: 35% min
What are the main applications of ASTM A179 low finned tubes?
ASTM A179 low finned tubes are widely used in various industrial
applications, including:
1. Heat Exchangers: Low finned tubes are commonly used in heat exchangers where high
heat transfer rates are necessary.
2. Air Cooler Systems: Low finned tubes can be used in air cooler systems for cooling
the air and preventing excessive heat buildup.
3. Refrigeration Systems: Low finned tubes improve heat transfer efficiency in
refrigeration systems, which helps to reduce energy consumption.
4. Condensers: Low finned tubes are used in condensers to increase heat transfer
efficiency and reduce fouling.
5. Boilers: Low finned tubes can be used in boilers for waste heat recovery
or to increase heat transfer efficiency.
6. Chemical Processing: Low finned tubes are used in chemical processing applications
where heat transfer efficiency is crucial and chemical resistance
is required.
7. Petrochemicals: Low finned tubes are used in petrochemical applications where
high heat transfer rates are required for processing various
chemicals and oils.
8. Power Generation: Low finned tubes are used in power generation equipment, such as
turbines, condensers, and heat exchangers, where high heat transfer
rates are necessary to maintain optimal performance.
