Wolverine Tube, Inc.

Tommy Tyler

Petur Thors

An improved heat transfer tube, an improved method of formation and an improved use of such a heat transfer tube is disclosed. The heat transfer tube includes an outer surface with a plurality of radially outwardly extending helical fins, the fins being grooved to define notches, a plurality of channels extending between adjacent fins, at least one nucleate boiling pore formed at the intersection of a notch and a channel. The fins are flattened or pushed down to form a primary nucleate boiling cavity within the at least one nucleate boiling pore; and the tips of the fins are further bent over or flattened to form a secondary nucleate boiling cavity within the at least one nucleate boiling pore. Also disclosed are improved refrigerant evaporator including at least one such boiling tube and a method of making such a boiling tube.

Heat transfer tubes, including methods of fabrication and use thereof

The present invention discloses an improved heat transfer tube, an improved method of formation, and an improved use of such heat transfer tube. The present invention discloses a boiling tube for a refrigerant evaporator that provides at least one dual cavity nucleate boiling site. The present invention further discloses an improved refrigerant evaporator including at least one such boiling tube, and the method of making such a boiling tube.

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Hartselle, AL, United States of America

Tommy Tyler