Elliptical finned tube introduction

An elliptical base tube and outer fins make up the elliptical finned tube, a heat exchange component. The most typical ones include spiral elliptic flat tubes, elliptical H-shaped finned tubes, elliptical tube with round finned tubes, elliptical tube with rectangular fins finned tubes, and so on. Oval finned tubes are drawing attention because they outperform circular finned tubes in terms of performance. In industries like ethylene and oil refining, oval finned tubes are frequently employed. In heat exchange equipment, the elliptical finned tube serves as a high-efficiency heat exchange element. The heat exchange apparatus is made to be small, light, efficient, and downsized by the low flow resistance outside the tube and high heat exchange efficiency.

Whats the difference of elliptical finned tube?

According to the fin arrangement, there are two types of finned tubes: longitudinal finned tubes and horizontal finned tubes. According to the shape of the base tube, the finned tube includes round finned tube, elliptical finned tube and flat tube finned tube. On the market, round finned tube heat exchangers play a leading role, but a large number of experiments have shown that, compared with round finned tubes, the backflow area and windward area of ​​the elliptical tube are much smaller, which effectively reduces the air side. When the number of tube bundles is the same, the elliptical tube and the flat tube are more compact than the round tube structure, and the volume of the heat exchanger is smaller, which reduces the cost.

Features of elliptical finned tube

(1) Elliptical finned tubes are easier to arrange in a compact arrangement than round-tube finned tubes, which minimizes the overall volume of the heat exchanger and lessens its footprint.

(2) Because of the elliptical finned tubes unique shape, the air side resistance is low, which boosts the heat transfer coefficient between the fluids. The thermal resistance inside the tube is also low, which improves the fluids ability to transmit heat.

(3) An elliptical finned tube has a higher surface area for heat transfer than a round tube with the same cross-sectional area. This is due to the elliptical tubes relatively extended heat transfer perimeter for the same cross-sectional area.

(4) The most commonly used elliptical fin tube is rectangular steel fin, which has high strength, and the base tube is not suitable for freezing and 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 finned tube