Polyhedral array heat transfer tube

Details Polyhedral array heat transfer tube Polyhedral array heat transfer tube

F - Mech Eng,Light,Heat,Weapons

28

F

F28F 1/40 (2006.01)

Patent

CA 2347793

A heat exchanger tube having an internal surface that is configured to enhance the heat transfer performance of the tube. The internal enhancement has a plurality of polyhedrons extending from the inner wall of the tubing. The polyhedrons have first and second planar faces disposed substantially parallel to the polyhedral axis. The polyhedrons have third and fourth faces disposed at an angle oblique to the longitudinal axis of the tube. The resulting surface increases the internal surface area of the tube and the turbulence characteristics of the surface, and thus, increases the heat transfer performance of the tube.

Tube de transfert de chaleur comportant une surface interne configurée de façon à améliorer les performances dudit tube en matière de transfert thermique. Le relief interne comporte une pluralité de polyèdres qui s'élèvent à partir de la paroi interne du tube. Les polyèdres comportent des premières et des deuxièmes faces planes sensiblement parallèles à l'axe des polyèdres, ainsi que des troisièmes et des quatrièmes faces planes formant un angle oblique avec l'axe longitudinal du tube. La surface résultante augmente la superficie interne du tube ainsi que les caractéristiques de turbulence de la surface et, par là, elle augmente les performances du tube en matière de transfert de chaleur.

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