Twisted Tube Heat Exchanger Enhanced Turbulence High Efficiency Low Pressure Drop for Industrial Use

Twisted tube is a type of enhanced heat transfer tube first introduced by Swedish Alards Company and later improved by the USA’s Koch Heat Transfer Company, LP. Structure and manufacture: The twisted tube has an oval cross-section, and heat exchangers can use mixed bundles of twisted and bare tubes or a pure twisted tube bundle. The manufacturing process involves partial pressure and distortion. The tube’s cross-section is nearly elliptical, with the long-to-short axis ratio designed according to the flow velocity in the tube and shell passes. When the flow rate in the tube pass is low, the long-to-short axis ratio is increased, or the flow surface is reduced to increase the flow rate. Enhanced heat transfer principles: The unique structure induces spiral motion in both tube and shell...