Heat transfer tube and a method of fabrication thereof

Details Heat transfer tube and a method of fabrication thereof Heat transfer tube and a method of fabrication thereof

2005-07-05

2005-07-05

Leo, Leonard R. (Department: 3753)

Heat exchange

With coated, roughened or polished surface

C165S183000, C165S184000

Reexamination Certificate

active

06913073

ABSTRACT:
A metallic heat transfer tube, in particular for the evaporation of liquids from pure substances or mixtures on the outside of the tube. Fins are integrally formed on the outside of the tube. Recesses are arranged in the area of the base of the primary grooves and extend between the fins. The recesses are in the form of re-entrant secondary grooves. The mechanical stability of the tube is not negatively influenced because material is primarily removed from the fin flanks toward the base of the groove so that the re-entrant secondary grooves are radially open.

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