Metallic heat exchanger tube

Abstract

The pipe i.e. integrally rolled ribbed type pipe (1), has ribs (2) running helically on a pipe exterior. Primary grooves (6) are found between the adjacent ribs. An undercut secondary groove (8) is arranged in an area of a groove base (7) of the primary grooves. A pair of oppositely lying material edges (9) extends continuously along the primary grooves. A cross section of the secondary groove is varied in space intervals without influencing a shape of the ribs. A distance is formed between the edges such that the distance is varied in spaced intervals to form local cavities (10).

Description

technical field [0001] The invention relates to a metal heat exchange tube according to the preamble of claim 1 , having a one-piece and continuously formed brace that runs helically on the outside of the tube. [0002] Metal heat exchange tubes of this type are especially used for vaporizing highly pure substances or liquids in mixtures on the outside of the tubes. Background technique [0003] Evaporation occurs in many areas of cooling and air conditioning technology as well as in process energy technology. Tube bundle heat exchangers are usually used to vaporize high-purity substances or liquids in mixtures on the outside of the tubes and cool brine or water on the outside of the tubes. This device is called a flood vaporizer. [0004] By increasing the heat transfer outside the tubes and inside the tubes, the size of the vaporizer is significantly reduced. As a result, the manufacturing costs of such devices are reduced. In addition, to reduce the filling amount of...

AI Technical Summary

Problems solved by technology

What these inventions have in common is that the structure on the bottom of the tank has no concave structure, therefore, the generation of air bubbles cannot be sufficiently improved

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