Elliptical finned tube for heat exchangers

Elliptical oval

Elliptical finned tube for heat exchangers

Elliptical finned tubes consist of a base tube that has an elliptical shape and is surrounded by fins.

Elliptical finned tube is a type of tube used in heat exchangers, in which external fins are elliptical in shape.

The fins are typically made of materials like aluminum or copper and are spirally or helically wrapped around the base tube. The elliptical shape of the tube and the arrangement of the fins help to enhance heat transfer efficiency.

Download PDF

Elliptical Finned Tube is an elliptical seamless tube as the base tube, which uses aluminum fin strips or copper fin strips to spirally and tightly wrap around the outer surface of the base tube under tension.

Elliptical Finned Tube is an elliptical seamless tube as the base tube, which uses aluminum fin strips or copper fin strips to spirally and tightly wrap around the outer surface of the base tube under tension. Elliptical Finned Tube is a heat exchange element consisting of a base tube elliptical tube and outer fins.

Because Elliptical Finned Tube has superior performance than round finned tube, Elliptical Finned Tube is receiving attention, and Elliptical Finned Tube has been widely used in ethylene, oil refining and other industrial fields. Elliptical Finned Tube is used in heat exchange equipment as a high-efficiency heat exchange element. The flow resistance outside the tube is small and the heat exchange efficiency is high, which makes the heat exchange equipment tend to be compact, lightweight, efficient and miniaturized. Although much research has been done on them, there is still a lot of research work to be done.

Elliptical Finned Tube

Elliptical Finned construction

Features of Elliptical Finned Tube

  1. Compared with the round tube finned tube, the Elliptical Finned Tube is easier to achieve a compact arrangement, which reduces the overall volume of the entire heat exchanger, thereby reducing the footprint.
  2. Due to the shape characteristics of the Elliptical Finned Tube, the air-side resistance is small, and the heat transfer coefficient between the fluids increases; the thermal resistance in the tube is relatively small, which increases the heat transfer of the fluid in the tube.
  3. The heat transfer area of ​​the Elliptical Finned Tube is larger than that of the circular tube of the same cross-sectional area, because the heat transfer periphery of the elliptical tube is relatively long under the same cross-sectional area.
  4. Rectangular steel fins are the most commonly used in Elliptical Finned Tubes, which have high strength, and the base tube is not suitable for frost cracking in winter and has a long service life.
  5. Since the Elliptical Finned Tube can be arranged more compactly, the front row tube has a greater impact on the rear row. The fin spacing of the rear row tube can be increased to reduce the flow resistance outside the tube, but the number of tube rows should not be too large.
Elliptical H-shaped finned tube

Elliptical H-shaped

Elliptical round finned tube

Elliptical round

Elliptical oval finned tube

Elliptical oval

Oval finned tubes are specialized components used extensively in heat transfer applications across various industries. These tubes are characterized by their unique oval shape and fins spirally wound around them, significantly enhancing heat transfer efficiency.

Types of Oval Finned Tubes

An oval finned tube is a type of heat exchanger component designed with an oval base tube and outer rectangular fins. These tubes are widely recognized for their superior performance compared to traditional round finned tubes, making them popular in industries like ethylene production and oil refining.

Advantages of Oval Finned Tubes

Applications of Oval Finned Tubes

【H】 Ceramic lined pipe

Ceramic lined pipe is made through self-propagating high-temperature synthesis (SHS) technique.

【H】 Cast basalt lined steel pipe

Cast basalt lined steel pipe is composed by lined with cast basalt pipe, outside steel pipe and cement mortar filling between the two layers.

【H】 Ceramic Tile Lined Pipes

Ceramic tile lined pipes have very uniform coating of specially formulated ceramic material that is affixed to the inner of the pipe.

【H】 Rare earth alloy wear-resistant pipe

The material of the rare earth alloy wear-resistant pipe is ZG40CrMnMoNiSiRe, which is also the grade of rare earth alloy steel.

【H】 Tubes Erosion Shields

Tubes Erosion Shields are used to protect boiler tubing from the highly erosive effects of high temperatures and pressures thereby greatly extending tube life.

【H】 ASTM A213 T91 Alloy Tube

The ASTM A213 T91 seamless tubes are primarily used for boiler, superheater, and heat-exchanger.